Jeep 4x4 Systems | Jeep Canada

Get to Know Jeep 4x4 Systems

Always off-road responsibly in approved areas

The white 2020 Jeep Grand Cherokee parked outdoors during sunset

Your sense of adventure has no limits, so why should your vehicle? With the advanced traction and secure handling of legendary Jeep_® brand 4x4 capability, you can drive with confidence knowing you can tackle whatever comes your way. This website is provided to help you understand what it means to possess the power of Jeep_® brand 4x4 systems.

The information on this page is not model or year specific. Please refer to your owner’s manual for information pertaining to your specific Jeep vehicle.

how 4x4 systems work
off-road driving guide
trail rated certification
glossary & faq

How jeep 4x4 systems work

Wrangler

Rock‑Trac^® 4x4

Command-Trac^TM 4x4

Selec-Trac^® 4x4

Rock‑Trac 4x4

Wrangler Rubicon^®, Wrangler Unlimited Rubicon^®

Surmount the most difficult driving scenarios with the Rock‑Trac^® heavy‑duty part‑time 4x4 system.

Rugged and ready for anything, the Rock‑Trac^® 4x4 system features Tru‑Lok^® electronic locking differentials, brake lock differential and electronic front sway bar disconnect. It also includes a sturdy NV241OR off‑road transfer case with 4:1 low‑gear ratio, providing you with the torque to inch over daunting obstacles with a consistent 0.8 km/h speed for greater control.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Driving conditions requiring additional low-speed power, technical driving, and situations when added torque is helpful (e.g., towing a boat trailer out of water).

Command-Trac 4x4

Wrangler Sport, Wrangler Sport S, Wrangler Unlimited Sahara^®, Wrangler Unlimited Sport S

Off‑road or on, the Command‑Trac^TM 4x4 system provides stunning traction on slick surfaces.

Delivering serious traction and capability, its impressive rock climbing 2.72:1 low range and NV241 GII transfer case can be shifted from 2WD to 4WD HI at up to 72 km/h (45 mph). Once in four-lock, the transfer case delivers a 50/50 split of torque to the front and rear axles for the awesome traction which makes Jeep_® brand vehicles such legendary 4x4 machines. This system has a Neutral mode that is ideal for available flat-towing.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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Side view of the grey 2020 Jeep Wrangler parked outdoors next to stream

Selec-Trac 4x4

Wrangler Unlimited Sahara^®

Choose the versatility and efficiency of the Selec-Trac^® 4x4 system.

Responsive and capable, this available Jeep_® brand 4-wheel-drive system features a full-time mode that automatically switches from 2WD to 4WD depending on driving conditions. In 4WD, snow, ice, rocks and mud are no match for the steady and superb traction. For smooth roads or trails, it will revert to 2WD to help provide impressive fuel efficiency.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Gladiator

Rock‑Trac^® 4x4

Command-Trac^TM 4x4

Rock‑Trac 4x4

Gladiator Rubicon

The Rock‑Trac^® 4x4 system empowers the Rubicon to tackle the most extreme conditions.

Featuring a 4:1 low‑gear‑ratio transfer case, this heavy‑duty 4WD system enables the Gladiator Rubicon to move at a low, consistent 0.8 km/h for greater control over obstacles, while also making more torque available at the wheels.

Impressively powerful, the Rock‑Trac 4x4 system also includes Tru‑Lok^® electronic locking differentials, brake lock differential and electronic front sway bar disconnect.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Command-Trac 4x4

Gladiator Sport S, Gladiator Overland^®

The Command‑Trac^TM 4x4 system delivers formidable traction in all weather, off‑road and on.

Ruggedly powerful, this part‑time, shift‑on‑the‑fly system splits up torque 50/50 between front and rear axles, while the transfer case provides seamless shifting from 2WD to 4WD at speeds up to 72 km/h (45 mph). What’s more, its 2.72:1 low range ensures total confidence for clambering over rocks.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Driving conditions requiring additional low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Grand Cherokee

Quadra-Drive II^®

Quadra-Trac I^®

Quadra-Trac II^®

Quadra-Trac^® SRT^®

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Quadra-Drive II^® 4x4

Grand Cherokee Trailhawk^®, Grand Cherokee Limited (Available), Grand Cherokee Overland^® (Available), Grand Cherokee Summit^® (Available)

The Quadra‑Drive II^® 4x4 system takes all‑weather off‑road traction to the next level.

Featuring a rear electronic limited‑slip differential, this full‑time system offers superior traction on the road and off, and its 2.72:1 low‑range gear ratio delivers legendary Jeep_® brand capability.

Our most advanced 4x4 system, it also includes the Selec‑Terrain^® traction management system with Auto mode for everyday driving, plus settings for Sport, Snow, Sand/Mud or Rock.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Quadra-Trac I 4x4

Grand Cherokee Laredo, Grand Cherokee Altitude

The adaptive Quadra‑Trac I^® 4x4 system delivers all‑weather capability and confidence.

The adaptive Quadra‑Trac I^® 4x4 system delivers all‑weather capability and confidence. Active at all times, the system senses changes in driving conditions and reacts appropriately, with no driver input required.

For optimal traction, the Quadra‑Trac I 4x4 system can transfer power up to 48% front and 52% rear. Working together with the standard brake lock differential and 4‑wheel brake traction control system, it enables the driver to navigate an extensive array of surfaces and conditions.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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The red and white 2020 Jeep Grand Cherokee parked outdoors near lake next to trees

Quadra-Trac II 4x4

Grand Cherokee Limited, Grand Cherokee Overland^®, Grand Cherokee Summit^®, Grand Cherokee Upland, Grand Cherokee Limited X, Grand Cherokee High Altitude, Grand Cherokee Laredo (Available)

The Quadra‑Trac II^® 4x4 system provides off‑road confidence and all‑weather traction.

The Quadra‑Trac II^® 4x4 system provides off‑road confidence and all‑weather traction. It features a 2‑speed low transfer case that uses an array of sensors to monitor for tire slippage and initiate corrective action right away. Once detected, up to 100% of available torque is routed to the axle with the most traction.

For everyday driving, the Selec‑Terrain^® Traction Management System’s Auto mode provides a smooth ride, or use the dial to select Sport, Snow, Sand/Mud or Rock to tackle specific driving conditions.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Quadra-Trac^® SRT^® 4x4

Grand Cherokee SRT^®, Grand Cherokee Trackhawk^TM

The Quadra-Trac^® SRT^® Active on-demand 4x4 system is designed to handle extraordinary power.

The Quadra-Trac^® SRT^® Active on-demand 4x4 system is designed to handle extraordinary power. It features the strongest Jeep_® brand transfer case ever and is capable of handling the power of the 6.4L HEMI^® SRT^® V8 and the 6.2L Supercharged V8. It features a massive mechanical “wet” clutch and a rear Electronic Limited-Slip Differential that allows as much as 100% of the torque to be sent to just 1 rear wheel, depending on available traction.

The included Selec-Track^™ system provides 5 settings for Auto, Snow, Tow, Sport and Track. Each mode optimizes the distribution of power to the front and rear wheels for maximum traction.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Cherokee

Active Drive I

Active Drive II

Active Drive Lock

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The 2020 Jeep Cherokee being driven on snow with a city as a background

Active Drive I

Cherokee Sport, Cherokee North, Cherokee Limited, Cherokee Overland^®

From slippery streets to muddy trails, the full-time Jeep_® Active Drive I 4x4 system is always ready for unexpected obstacles.

From slippery streets to muddy trails, the full-time Jeep_® Active Drive I 4x4 system is always ready for unexpected obstacles. Using sensors, it detects wheel slippage and automatically applies the appropriate amount of torque where it’s required. Adding to the enhanced control, the system includes Selec‑Terrain^® Traction Management System with Auto, Snow, Sport and Sand/Mud modes.

And with its fully disconnecting rear axle, fuel economy is improved too, only engaging 4x4 when enhanced traction is needed.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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Rear quarter view of the 2020 Jeep Cherokee parked outdoors facing mountains

Active Drive II

Cherokee North, Cherokee Limited, Cherokee Overland^®

The Jeep^® Active Drive II system is designed to make outdoor adventures happen.

The Jeep_® Active Drive II system is designed to make outdoor adventures happen. Whether towing a boat, climbing a cliff or going off-roading, the Active Drive II system’s 2-speed PTU torque management and 4-Low mode has power to spare. This system locks the front and rear driveshafts for an extra level of power at low speeds – or for towing toys. To tow it behind an RV, put it in Neutral mode to enable available flat towing.

Jeep Active Drive II gives the off‑road adventurer a ride height increase of 2.5 cm (1 inch), a crawl ratio of 51:2:1 when powered by the 2.0L I-4 Turbo engine, and a crawl ratio of 48.3:1 when powered by the 3.2L Pentastar^TM V6 engine.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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Active Drive Lock

Cherokee Trailhawk^®

Own virtually every type of road with this Trail Rated^® 4WD system.

Combining all the features of the Jeep Active Drive II 4x4 System with additional technologies like Hill Descent Control, Selec‑Speed^TM Control and a mechanical locking rear differential for superior off‑road performance, this brawny 4x4 system is ready to take on the toughest roads and trails.

For extra rock‑climbing agility, its standard Selec‑Terrain^® Traction Management System also includes a Rock mode.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Renegade

Active Drive

Active Drive Low

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The red 2020 Jeep renegade parked in a desert during daytime

Active Drive

Renegade Sport, Renegade North, Renegade Limited

Seamlessly switch between 2WD and 4WD on the fly with the Jeep_® Active Drive 4x4 system.

Seamlessly switch between 2WD and 4WD on the fly with the Jeep_® Active Drive 4x4 system. Designed to discover more amazing places easily, this fully automatic, single‑speed PTU 4x4 system is ready to tackle snow and trail alike. For added efficiency, this system actively transitions from 4x4 to fuel-saving front-wheel drive.

The standard Selec-Terrain^® Traction Management System lets the driver adjust traction setting – Auto, Snow, Sand and Mud – according to road conditions to ensure optimum traction.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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The silver 2020 Jeep Renegade driving through offroad in a mountain

Active Drive Low

Renegade Trailhawk^®

The Jeep_® Active Drive Low 4x4 system delivers superb confidence in off‑road adventures.

For enhanced off‑road dynamics, this system includes a standard single-speed PTU for torque management. Plus, its 4WD Low mode locks the front and rear driveshafts to provide extra muscle at low speeds or when towing.

Take on rocks and ridges with a Trail Rated^® 21:1 crawl ratio in low range – exclusively on Trailhawk^® – and on tougher terrain, select the additional Rock mode on the standard Selec‑Terrain^® Traction Management System.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Compass

Active Drive

Active Drive Low

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The white 2020 Jeep Compass being driven on snow

Active Drive

Compass Sport, Compass North, Compass Limited

The Jeep_® Active Drive 4x4 system is designed to keep adventures moving forward in all conditions.

Switch between 2WD and 4WD at any speed with this fully automatic, single‑speed PTU 4x4 system. Its disconnecting rear axle helps increase fuel efficiency by only engaging 4x4 when enhanced traction is needed.

Its advanced sensors are on constant guard for wheel slippage and send torque to the wheels with the most traction to help the driver stay in control. What’s more, Selec‑Terrain^® Traction Management System comes standard and includes settings for Auto, Snow, Sand and Mud.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

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The red 2020 Jeep Compass driving through offroad near beach

Active Drive Low

Compass Trailhawk^®

Tackle seriously tough terrain with the Jeep_® Active Drive Low 4x4 System.

For those seeking more off‑road challenges, the standard single‑speed PTU delivers the Compass Trailhawk^® with torque management and 4WD Low mode. This locks the front and rear driveshafts to providing additional power at low speeds or for towing.

Climb over rocks and ridges easily with its Trail Rated^® 20:1 crawl ratio and standard Selec‑Terrain^® Traction Management System – enhanced on the Trailhawk^® with a Rock mode.

When to use

High range

All road surfaces, including wet or snow-covered pavement, sand or gravel.

Low range

Conditions requiring added low-speed power, technical driving, and situations when added torque is helpful (e.g., pulling a boat trailer out of water).

Your Guide to Off‑Roading with Confidence

Snow & Mud

Control versus Speed

Planning Ahead

Vehicle Inspection

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The grey 2020 Jeep Grand Cherokee being driven on snow in front of snow covered hills

Maximum Traction in Snow and Mud

Trust Jeep_® 4x4 systems to maintain traction in wet weather or slick road conditions.

Trust Jeep_® 4x4 systems to maintain traction in wet weather or slick roads. If the Jeep vehicle features a full‑time 4x4 system, it adapts automatically, while on‑demand or part‑time 4x4 systems are manually engaged.

For deep snow or icy conditions, 4WD LOW provides added control at low speeds. Shifting into a gear lower than necessary can reduce momentum. Over‑revving the engine can cause tires to spin and lose traction, but if it does happen, turn the steering wheel from side to side rapidly to help the tires establish more grip and deliver more control.

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The blue 2020 Jeep Wrangler driving through narrow stream in a mountain

Make It Slow and Steady

When it comes to off‑road driving, easy does it – take things slow and stay in control.

For Jeep_® vehicles with 4WD LOW, the low gear and low speed at idle generally provide enough power to ensure most hurdles can be climbed over. For Jeep_® vehicles with a manual transmission, simply let out the clutch slowly in the lowest gear to overcome obstacles like rocks and logs.

To try out these tips for maximizing vehicle capability, look for somewhere like California’s famously rugged Rubicon^® Trail, where the average speed is just 2‑8 km/h (1‑5 mph).

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The brown Jeep Cherokee being driven outdoors with kayaks on the roof

Know Before It's Time To Go

Advanced preparation is key for high‑performance off‑road driving.

Engage part‑time 4x4 systems as soon as the vehicle is off-road – there’s no need to wait until a sticky situation arises.

Always keep a close eye on the trail ahead to avoid unexpected obstacles and plan the best route around or over them.

The driver’s thumbs should always be up and out of the steering wheel’s way – the steering wheel can rotate suddenly when off‑roading and catch the driver's thumb with a spoke.

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The grey 2020 Jeep Wrangler parked outdoors near stream showing its LED headlight

Prepare Ahead for Off-Roading

It’s critical to carefully inspect the vehicle before taking it off-road.

Check under the hood to ensure the battery is securely fastened, all hoses are in good condition and all fluids are at the proper levels. Inspect the tires, including the spare, to determine each one is inflated correctly and in good condition.

Planning to go off the beaten path? Travel with a friend, especially when exploring unfamiliar territory.

Hill Climbing

Rock Crawling

Driving in Sand

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Side view of the blue 2020 Jeep Compass parked on a hill facing mountains during sunset

Taking On Ridges and Hills

Ensure the Jeep_® vehicle’s driving line is straight up or down when travelling on a hill.

Ensure the Jeep_® vehicle’s driving line is straight up or down when travelling on a hill. When ascending, apply more power at the bottom and slowly release the gas pedal as the vehicle crests the hill. If it does stall, back straight down carefully before the next attempt.

When descending a hill with an automatic transmission, select Low Range and the lowest drive setting. Always use the lowest gear with a manual transmission.

Never disengage the clutch to let the vehicle coast when in Low Range – this could severely damage the clutch disc. Simply let the gears and engine compression do the work and slow the vehicle down, and only apply the brakes to fine‑tune its speed.

NOTE: Never drive up or down a hill at an angle. Driving sideways on a steep slope can result in vehicle instability.

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The grey 2020 Jeep Gladiator driving through rocks in a desert

Roll Over Rocks

Overcome rocks slowly and steadily in Low Range.

Overcome rocks slowly and steadily in Low Range. Select 4WD LOW in low gear and, at idle speed or using as little throttle as required, climb the rocks at a crawl. Ideally, rock crawling speed is 2‑8 km/h (1‑5 mph). For additional traction, reduce the vehicle's tire pressure by 3‑5 psi and remember to return it to normal pressure when the off‑road adventure is complete.

NOTE: Do not straddle rocks. Instead, position tires on top of the rocks and crawl over slowly.

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The blue 2020 Jeep Compass being driven on a sand at a beach during sunset

Beach Ready

Off‑roading in sand means mastering momentum and letting the tire treads do the work.

Off‑roading in sand means mastering momentum and letting the tire treads do the work.To maintain momentum, stay in 4WD HI and take wide turns – tight turns can slow the vehicle, which can cause it to lose traction and get stuck.

For improved traction, reduce the tire pressure by 10‑12 psi and remember to re‑inflate the tires back to normal when finished. If conditions call for 4WD LOW or alternative gear selections, be sure to avoid spinning the tires.

Overview
Check out the 5 off-road measurements

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The white 2020 Jeep Cherokee driving down a mountain on off-road

Mighty Manoeuvrability

Dodge obstacles with the nimble manoeuvrability of a Trail Rated^® Jeep_® vehicle.

Narrow gaps, tight trails and snaking switchbacks are all part of what makes off‑road driving so fun, as is the ability to navigate them surely and swiftly. That’s why Trail Rated^® Jeep_® vehicles feature precision steering and optimized wheelbases. Tested in the toughest and trickiest situations, they deliver dynamic manoeuvrability for all off‑road experiences.

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The red Jeep 2020 Wrangler climbing rocks in a mountain

Extraordinary Articulation

Enhanced articulation ensures your wheels remain stable when 1 or more tires are elevated.

Enhanced articulation ensures wheels remain stable when 1 or more tires are elevated.

When travelling on tough terrain or even potholed roads, it’s crucial the chassis and suspension are flexible. Thanks to Trail Rated^® Jeep_® brand design, articulation is reinforced with features like solid axles, generous wheel well space, long-wheel travel, electronic sway bar disconnect and maximum suspension flexibility. If 1 tire does come off the ground, these features help keep the other tires firmly planted for full traction.

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The red 2020 Jeep Renegade driving toward to stream in a mountain with a kayak on the roof

Always off-road responsibly in approved areas

Deep Water Fording

From flooded creeks to deep puddles, Trail Rated^® vehicles are designed for water fording.

Built to keep water out of critical areas while crossing overflowing streams and other bodies of water, Trail Rated^® vehicles provide extra sealing for electrical connections and body openings. Air intake vents are positioned higher too, so Jeep_® vehicles can go where others would never dare.

Glossary & FAQ

Approach Angle

Starting from level ground, this is the degree of slope a vehicle can approach without scraping or hitting the front undercarriage. It's a great indication of the ability to navigate severe off-road terrain like boulders and logs. A short front overhang produces high angles of approach, thus increasing off-road ability.

Articulation

A Trail Rated^® suspension is limber like a gymnast. How, exactly? Flexibility is the key to good articulation. The more a wheel can travel, or flex, the better it can maintain contact with the ground and provide the traction needed to cross an array of obstacles.

Axle Articulation

The ability of one axle to move relative to the chassis. It is the measure of the ease with which tires stay in contact with the ground (and retain traction) on very uneven terrain.

Axle Differential

An axle differential is a gear system located in the centre housing of an axle assembly designed to allow the wheels to rotate at different speeds during cornering.

Axle

A shaft that connects the front and/or rear wheels together. The suspension components attach to the axle and to the vehicle’s body frame.

Brake Traction Control System

Transfers torque from one wheel to another on the same axle when wheel slip conditions are detected.

Breakover Angle

This off-road term refers to the degree of slope that defines the largest ramp or hill that a vehicle can travel over without scraping against the frame or underbody components.

Centre Differential – Geared

A gear system located inside the transfer case of full-time 4x4 vehicles. It is used to distribute drive torque to the front and rear driveshafts and allows the front and rear wheels to rotate at different speeds during cornering.

Clutch Plates

A series of alternating steel plates within the transfer case of many on-demand or automatic 4x4 systems. One set of plates is splined to the clutch assembly hub of the rear driveshaft; the other set is splined to the clutch drum attached to the front driveshaft. The clutch housing is usually filled with a viscous, silicone-type fluid that clings to the discs to help transfer torque to the driveshaft. The engagement of clutch plates can also be controlled electronically.

Coil Springs

A coil of flexible metal that can be compressed or stretched along its centreline axis without permanent deformation. Coil springs support the weight of the vehicle while allowing the wheels to travel up and down over bumps.

Crawl Ratio

Essential for serious off-road treks involving steep hill climbs and descents, this is the final drive ratio of a vehicle in low range. It allows Jeep_® vehicles to creep along (without depressing the accelerator) at very low speeds. Essentially, the vehicle does all the work. Except with Freedom Drive II^® crawl ratio is determined by this formula: first gear ratio x rear axle ratio x low-range 4-wheel-drive ratio. The higher the number, the better the off-road capabilities.

Crow Hop

Vehicle shudder and tire scuffing due to a binding condition in the driveline, which is usually caused by operating in basic 4-wheel-drive or part-time 4-wheel-drive modes on dry pavement.

Departure Angle

When returning to level ground from a descent, this angle indicates the degree of a slope from which a vehicle can depart without scraping or hitting the rear undercarriage.

Differential

A gear system that transmits torque to the drive wheels, while also allowing the wheels to rotate at different speeds when cornering. Vehicles with 4-wheel drive have differentials in both the front and rear axles.

Driveshaft

Shaft connecting the transmission output shaft to the differential drive pinion shaft. Vehicles with 4-wheel drive add a second driveshaft from the transfer case to the front differential.

Electronically Controlled Coupling

Manages the torque split from front to rear with no active driver input needed, for smooth and automatic performance. It responds to throttle position or to front wheel slippage.

Fixed Yoke Output Assembly

Effectively handles the extra output from the transfer case and helps to ensure smooth and durable driveline operation.

Four-Wheel Drive

A drivetrain that utilizes a transfer case or Electronically Controlled Coupling to distribute engine power between the front and rear axles in order to drive all 4 wheels. Full-time 4-wheel-drive systems utilize a centre differential, which enables the front and rear driveshafts to turn at different speeds, thereby allowing engagement on dry pavement for normal driving conditions. A part-time system does not employ a centre differential and, during normal driving conditions, must operate only in 2-wheel drive. With a part-time system, the 4-wheel-drive mode is to be used only when off-roading or on wet or slippery surfaces.

Front Axle Disconnect

A mechanical or vacuum‑operated component used primarily on 4x4 models to connect and disconnect drive torque to the front axle. When shifting from 4‑wheel drive to 2‑wheel drive, this system disengages the front axle from the front driveline so that the front wheels aren't turning the front driveline unnecessarily. This reduces unnecessary front driveline wear, noise and fuel consumption.

Ground Clearance

Don't drag your belly through the mud – just clear nasty logs, rocks and uneven ground without sustaining undercarriage damage. Jeep_® Trail Rated^® 4x4 vehicles feature optimized approach, departure and breakover angles to keep you in the clear.

High-Range

A 4WD mode used for on-road or light off-road use.

Hill Descent Control

This system uses the ABS braking to control the car's motion downhill. It also allows a smooth and controlled hill descent in rough terrain without the driver needing to touch the brake pedal. If the vehicle accelerates without driver input, the system will automatically apply the brakes to slow down to the desired vehicle speed.

Jounce/Rebound

The motion of a wheel that compresses its suspension. If a wheel is at full jounce, it is at the upper limit of its travel. The opposite of jounce is rebound, or wheel movement that decompresses a vehicle's suspension.

Limited-Slip Differential

Provides the same basic functions as an axle differential, but with an added advantage: when the drive wheel begins spinning as a result of being on a slippery surface, a limited-slip differential automatically transfers torque to the opposite wheel to help improve traction.

Locking Differential

Provides even more traction than a limited-slip differential in tough conditions by locking the axle shafts together. Locking differentials do not allow for wheel-speed differences and must not be used on dry, paved roads.

Low Crawl Speed

The crawl ratio is the lowest gear ratio in a vehicle and is determined by multiplying the first gear ratio by the low-range ratio by the axle ratio.

Low Range

A 4WD mode used for severe off-road conditions.

Manoeuvrability

Athletic. Agile. Trail Rated^®. Jeep_® 4x4 vehicles have the footwork to navigate narrow gaps, dodge emergency situations and avoid cosmetic damage to underbody sills, thanks to precision steering and optimized wheelbases.

Neutral

When the shifter is in this position, the front and rear axles spin freely. Sometimes used for towing a Jeep_® vehicle behind another vehicle (such as a motor home), so that uncoupling the driveshafts is not required. Also used in the process of shifting into 4WD LOW.

Open-Centre Differential

Located in the transfer case on some full-time 4x4 vehicles, this component works in the same way as an open differential in the axles but is of a more compact design. This component employs a planetary gearset, with planetary gears that revolve around the sun gear and inside the ring gear.

Power-Robbing Friction

Surface resistance to relative motion, as of a body sliding or rolling.

Running Ground Clearance

The distance from the ground to the lowest point between the axles.

Shift-on-the-Fly

The ability to shift from 2-wheel drive to 4-wheel drive while the vehicle is moving.

Skid Plate

Helps protect the undercarriage from damage when driving off-road.

Solid Axle/Coil Springs

Ideal off-road equipment. Instead of each wheel on an axle being sprung separately (like independent suspension designs), a solid axle connects the suspension of 2 wheels. Coil springs then support the vehicle's weight and allow the wheels to travel up and down over terrain.

Suspension Travel

From full jounce to full rebound, this is the amount of vertical wheel movement allowed by the suspension.

Tow Hooks

Heavy-duty forged steel hooks, in the front and rear of a vehicle, that provide attachment points for snatch-em straps and winch cables should you get stuck.

Traction

Traction in 4x4 is equivalent to grip on asphalt. Trail Rated^® traction helps you stay in control on untamed terrain, in slippery (wet, mud, snow) conditions, and on steep grades.

Transfer Case

Mounted behind and driven by the transmission on most 4x4 vehicles, the transfer case transmits power to the front and rear driveshafts in 4x4 Jeep_® vehicles and offers high and low range. The Compass 4x4 use an Electronically Controlled Coupling instead of a traditional transfer case.

Transmission

A mechanism that transfers torque into usable driving power, usually through the use of gearsets. These gearsets multiply engine torque in varying amounts to meet specific driving demands. An exception is a Continuously Variable Transmission (CVT), available on Compass and Patriot, which instead operates by varying the working diameters of 2 pulleys, transmitting torque by means of an immensely strong, steel-segmented push-belt.

Two-Wheel Drive

When the shifter is in this position, the front axle spins freely while power is sent to the rear axle and wheels, which then drive the vehicle.

Viscous Coupling

A speed-sensitive device located in the transfer case that transmits drive torque between the front and rear driveshafts when wheel slip occurs. Viscous couplings are typically used on all-wheel-drive vehicles and vehicles with automatic and on-demand 4x4 systems.

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What is the difference between full-time 4x4 and part-time 4x4 systems?: Full-time 4x4 systems utilize a centre differential, which enables the front and rear driveshafts to turn at different speeds, thereby allowing engagement on dry surfaces for normal driving conditions. A part-time system does not employ a centre differential and locks the front and rear driveshafts together. With a part-time system, 4x2 mode should be used during normal driving conditions and 4x4 mode is to be used only when off-roading or on wet or slippery surfaces.
Why can't you use part-time 4x4 on dry surfaces?: Part-time 4x4 systems effectively lock the front and rear driveshafts together, forming a single driving unit that does not allow for differential action between the front and rear driveshafts. Driveline noise and binding (Crow Hop) may occur when operated excessively on dry surfaces or in turns. This binding can lead to heat buildup and early part failure.
Why does Crow Hop occur?: When a vehicle turns, each wheel rotates on a different radius to the turning circle, thereby travelling different distances at different speeds. If the vehicle's front and rear axles are locked together and are turning on dry surfaces, the difference in wheel speed sometimes results in driveline binding that is released with a bang or vehicle shudder when one of the tires loses traction.
Can I shift into 4WD high range at any speed?: Shifting into 4WD high range can be done with the vehicle stopped or in motion. If the vehicle is in motion, shifts can be made up to 88 km/h (55 mph).
How long can I drive in 4WD high range?: With a part-time system, prolonged driving in 4WD high range is recommended only for wet, loose or slippery road surfaces. With a full-time system, you need not worry about switching to 2WD mode when road surfaces improve.
How fast can I drive in 4WD high range?: You should not go faster than road conditions permit.
What is 4WD low range?: 4WD low range is a mode specifically designed for temporary use when additional traction and maximum pulling power are desired. Front and rear driveshafts are locked together and engine power is sent through another set of gears to multiply torque. Avoid attempting to engage or disengage low range with the vehicle moving faster than 3–5 km/h (2–3 mph), and do not use this mode for normal driving.
Can I shift into 4WD low range at any speed?: No. With the vehicle rolling at 3–5 km/h (2–3 mph), shift an automatic transmission to Neutral or depress the clutch pedal on a manual transmission. While the vehicle is coasting at 3–5 km/h (2–3 mph), shift the transfer case lever firmly through Neutral and into the low range position.
How fast can I drive in 4WD low range?: Do not exceed 40 km/h (25 mph).
Can I shift into 4WD low range when stopped?: Shifting into or out of 4WD low range is possible with the vehicle completely stopped; however, difficulty may occur due to the teeth of the gears not being properly aligned. Several attempts may be required for clutch teeth alignment and shift completion to occur. The preferred method is with the vehicle rolling at 3–5 km/h (2–3 mph). Avoid attempting to engage or disengage 4WD low range with the vehicle moving faster than 3–5 km/h (2–3 mph).

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"Net Amount" includes the Manufacturer's Suggested Retail Price ("MSRP"), any current discounts and government rebates, freight (from $2,095 to $2,795), federal A/C, Green Levy and Luxury Tax surcharges (as applicable), and any finance adjustment values entered (down payment, trade-in, owe on trade). Price does not include sales tax, insurance, registration, license, retailer administration fees and other charges, or new tire duties (in Quebec). Your dealer may charge a Luxury Tax surcharge on vehicles priced over $100,000 under the Government of Canada's Select Luxury Items Tax Act. The actual value of the Luxury Tax surcharge will be calculated based on the vehicle's final negotiated selling price (before applicable taxes), and will represent the lesser of: (i) 10% of the vehicle's selling price; or (ii) 20% of the final negotiated selling price that exceeds the $100,000 threshold. Please see your dealer or visit the Government of Canada's website for further details.

"MSRP" represents the Manufacturer's Suggested Retail Price including freight. Price does not include taxes, insurance, registration, licence, retailer administration fees and other charges, and new tire duties (in Quebec). Retailers may sell for less. See your retailer for complete details.

Offer based on "Net Amount", which represents the "Starting at" price (which includes freight (from $2,095 to $2,795), federal A/C, and Green Levy and Luxury Tax surcharges (as applicable)). Net Amount does not include sales tax, insurance, registration, license, retailer administration fees, new tire duties (in Quebec), or lien registration fees (up to $75.75, including registering agent fees, where applicable, and which are due at signing). Your dealer may charge a Luxury Tax surcharge on vehicles priced over $100,000 under the Government of Canada's Select for further details. The actual value of the Luxury Tax surcharge will be calculated based on the vehicle's final negotiated selling price (before applicable taxes), and will represent the lesser of: (i) 10% of the vehicle's selling price; or (ii) 20% of the final negotiated selling price that exceeds the $100,000 threshold. Please see your dealer or visit the Government of Canada's website. Estimated payments, cost of borrowing and total credit charges will vary depending on down payment/trade. On approved credit on eligible retail deliveries. Retailers may sell for less. See your retailer for complete details. The APR (where applicable) is the effective interest rate which includes the Consumer Cash which lower rate financing customers forego as a cost of borrowing. For further offer details, click here.

Estimated payments based on "Net Amount", which represents the "Starting At" price (which includes freight (from $2,095 to $2,795), federal A/C, and Green Levy and Luxury Tax surcharges (as applicable)). Net Amount does not include sales tax, insurance, registration, license, retailer administration fees, new tire duties (in Quebec), or lien registration fees (up to $75.75, including registering agent fees, where applicable, and which are due at signing). Your dealer may charge a Luxury Tax surcharge on vehicles priced over $100,000 under the Government of Canada's Select Luxury Items Tax Act. The actual value of the Luxury Tax surcharge will be calculated based on the vehicle's final negotiated selling price (before applicable taxes), and will represent the lesser of: (i) 10% of the vehicle's selling price; or (ii) 20% of the final negotiated selling price that exceeds the $100,000 threshold. Please see your dealer or visit the Government of Canada's website for further details. Estimated payments are calculated based on the difference between the residual value and the Net Amount, plus any lease finance charges. Estimated payments will vary depending on down payment/trade. On approved credit on eligible retail deliveries. Low lease kilometre limit as low as 12,000 km/year for Chrysler, Jeep®, Dodge, Ram, FIAT® and Alfa Romeo vehicles. Charge of $0.16 - $0.20 per excess kilometre will be applied to Jeep, Chrysler, Dodge, Ram, FIAT vehicles, plus applicable taxes at lease termination. Charge of $0.20 - $0.30 per excess kilometer plus applicable taxes will be charged at lease termination for Alfa vehicles. The APR is the effective interest rate which includes the Consumer Cash which lower rate financing customers forego as a cost of borrowing. For further offer details, click here.

Offer based on 'Dealer Price' which includes any current discounts, freight (from $2,095 to $2,795), federal A/C, OMVIC/AMVIC fee (as applicable), tire levy, administration and any retailer charges, and Green Levy and Luxury Tax surcharges (as applicable). Price does not include sales tax, insurance, registration, license, or new tire duties (in Quebec). Your dealer may charge a Luxury Tax surcharge on vehicles priced over $100,000 under the Government of Canada's Select Luxury Items Tax Act. The actual value of the Luxury Tax surcharge will be calculated based on the vehicle's final negotiated selling price (before applicable taxes), and will represent the lesser of: (i) 10% of the vehicle's selling price; or (ii) 20% of the final negotiated selling price that exceeds the $100,000 threshold. Please see your dealer or visit the Government of Canada's website for further details.

"Starting At" price represents the Manufacturer's Suggested Retail Price ("MSRP") plus freight (from $2,095 to $2,795), federal A/C, administration fees of the selected dealer, and Green Levy and Luxury Tax surcharges (as applicable) minus current Manufacturer Discounts which allow the dealer to sell for less. Sales tax, insurance, registration, license, and new tire duties (in Quebec) not included. Your dealer may charge a Luxury Tax surcharge on vehicles priced over $100,000 under the Government of Canada's Select Luxury Items Tax Act. The actual value of the Luxury Tax surcharge will be calculated based on the vehicle's final negotiated selling price (before applicable taxes), and will represent the lesser of: (i) 10% of the vehicle's selling price; or (ii) 20% of the final negotiated selling price that exceeds the $100,000 threshold. Please see your dealer or visit the Government of Canada's website for further details. Manufacturer discounts may vary from time to time and may vary considerably by model, trim and engine option selected. Please see your retailer or visit Build & Price for further pricing information. Price listed is for base models. Vehicles shown may be an upgraded model. Retailers may sell for less.

Jeep 4x4 Systems | Jeep Canada

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Rock‑Trac 4x4

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Selec-Trac 4x4

Rock‑Trac 4x4

Command-Trac 4x4

Quadra-Drive II® 4x4

Quadra-Trac I 4x4

Quadra-Trac II 4x4

Quadra-Trac® SRT® 4x4

Active Drive I

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Your Guide to Off‑Roading with Confidence

Maximum Traction in Snow and Mud

Make It Slow and Steady

Know Before It's Time To Go

Prepare Ahead for Off-Roading

Taking On Ridges and Hills

Roll Over Rocks

Beach Ready

jeep® trail rated® certification Every Trail Rated 4x4 Jeep® Brand vehicle has overcome grueling tests in 5 categories: Traction, Ground Clearance, Manoeuvrability, Articulation and Water Fording.

Famous 4x4 Traction

Gaining Ground

Mighty Manoeuvrability

Extraordinary Articulation

Deep Water Fording

Glossary & FAQ

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Quadra-Drive II^® 4x4

Quadra-Trac^® SRT^® 4x4

jeep_® trail rated^® certification
Every Trail Rated 4x4 Jeep_® Brand vehicle has overcome grueling tests in 5 categories: Traction, Ground Clearance, Manoeuvrability, Articulation and Water Fording.