2005 Jeep WK Grand Cherokee 4×4 System

By Jeep Experts

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Three Unique 4 X 4 Systems Provide Command and Control and Cover the Marketplace

Industry-first Electronic Limited Slip Differentials – Front / Rear / Center

2005 Jeep Grand Cherokee is First Jeep Equipped with Electronic Transfer Case Engagement

The all-new 2005 Jeep® Grand Cherokee units a brand new benchmark within the SUV market, combining legendary off-road functionality with on-road driving manners by distinct 4 x 4 techniques. It is obtainable with three distinctive 4 x 4 techniques – greater than any of its rivals – giving prospects the power to decide on what’s greatest for his or her wants.

Innovations that the Jeep engineering group pioneered for this car elevate the off-road capabilities of Grand Cherokee even greater, whereas additionally bettering the on-road driving manners of the car, giving prospects the stability they need for a car that’s simply as snug within the city jungle as it’s within the Amazon.

All-new propshaft

The WK options an all-new aluminum Slip-in-Tube Propshaft that’s designed so two items of the propshaft plunge into each other, eliminating the necessity for the slip and stud yokes sometimes required with typical propshafts. The design solved car NVH points that competitor merchandise couldn’t by making the most of Slip-in-Tube’s inherent greater stiffness, decrease mass and superior damping traits, enabling the brand new Grand Cherokee to be quieter than its substitute.

Quadra-Trac I

Quadra-Trac I is designed for Jeep Grand Cherokee homeowners who need the reassurance of full-time all-wheel drive and no switches or levers to tug, the Quadra-Trac I is the appropriate system. The system gives for easy operation of the car over a wide range of highway floor situations. No driver interplay is required.

The NV140 switch case splits torque 48/52 % (entrance/rear) for practically even distribution of engine energy. The single-speed switch case has been designed to rigorous Jeep sturdiness requirements whereas providing easy and quiet operation. The use of Brake Traction Control System (BTCS) with the NV140 switch case makes the 4 x 4 system extraordinarily competent in a wide range of conditions. The BTC system gives resistance to any wheel that’s slipping to permit extra torque switch to wheels with traction.

Offering a single-speed switch case attracts a brand new group of consumers to the Jeep Grand Cherokee lineup and builds on the succesful, entry-level, two-wheel drive variations, which presently account for about 25 % of Jeep car gross sales.

Quadra-Trac II

The Quadra-Trac II 4 x 4 system offers homeowners the good thing about the NV245 energetic switch case and BTCS. The switch case is similar one used within the Quadra-Drive II system. It takes enter from a wide range of sensors to find out tire slip on the earliest attainable second and take corrective motion. The system additionally makes use of Throttle Anticipate – sensing fast motion in throttle from a cease – and it takes steps to maximise traction earlier than tire slippage even happens.

Torque is transferred to the person wheels as wanted by the BTCS to keep up traction in altering highway situations. When the system senses tire slip, it modulates brake stress to the slipping wheel, which directs torque to the tires with the most effective traction.

Quadra-Trac II options an digital shift mechanism for ease-of-use. The switch case additionally features a impartial place for trouble-free towing behind one other car.

Quadra-Drive II

The Quadra-Drive II Jeep 4 x 4 system provides homeowners the final word in off-road functionality. It combines the NV245 full-time switch case with Electronic Limited Slip Differentials (ELSD) for best-in-class tractive efficiency. The system immediately detects tire slip and easily distributes engine torque to the tires with traction. In some instances, the car will even anticipate low traction and modify to proactively restrict or remove slip

The coronary heart of the system is the NV245 energetic switch case. This switch case features a heart differential coupled with an electronically managed clutch pack, various it from a very open state to utterly locked, and infinite prospects in between. The 4-Low gear ratio is 2.72:1.

Quadra-Drive II options an digital shift mechanism with a novel engagement lever. The lever is conveniently situated on the shift console. Pulling the lever up engages 4-Low. The lever returns to a resting place after activation. The switch case additionally features a impartial place for trouble-free towing automobiles, resembling behind a motor dwelling.

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A key element within the Quadra-Drive II system is the ELSD – an trade first software – and the brand new benchmark for automated traction differentials. The ELSD use electronically managed clutch packs to mechanically and immediately fluctuate from slip to lock at every axle. This maximizes traction when wanted with none of the on-road drawbacks usually related to such a sturdy 4 x 4 system.

All elements of the system work collectively, regularly monitoring wants, to offer easy and automated software of the elements for best-in-class tractive efficiency whereas bettering the day-to-day on-road driving expertise. For instance, the ELSD releases the clutch packs within the entrance axle throughout turns to permit differentiation and forestall crow hop.

Rear axle ELSD. The Eaton EGerodisctm is a hydraulically-operated electronically managed restricted slip differential that’s able to offering variable torque as much as full axle lock

Quadra-Trac II / Quadra-Drive II
Operating Instructions and Precautions

The Quadra-Trac II® switch case is absolutely automated within the regular driving 4 HI mode. The Quadra-Trac II© switch case gives three mode positions – 4 wheel drive excessive vary, impartial, and 4 wheel drive low vary.

This switch case is absolutely automated within the 4 HI mode. This switch case divides engine torque nearly evenly with 48 % of engine torque to the entrance axle and 52 % of engine torque to the rear axle. When velocity variations are elevated between the entrance and rear drive shafts, the switch case can transmit as much as one hundred pc of obtainable engine torque to the entrance or rear drive shafts.

When extra traction is required, the 4 LOW place can be utilized to lock the entrance and rear driveshafts collectively and power the entrance and rear wheels to rotate on the identical velocity. The 4 LOW place is meant for unfastened, slippery highway surfaces solely. Driving within the 4 LOW place on dry laborious surfaced roads could trigger elevated tire put on and injury to driveline elements.

When working your car in 4 LOW, the engine velocity is roughly 3 times that of the 4 HI place at a given highway velocity. Take care to not overspeed the engine and don’t exceed 25 mph (40 km/h).

Proper operation of 4 wheel drive automobiles is dependent upon tires of equal dimension, kind, and circumference on every wheel. Any distinction will adversely have an effect on shifting and trigger injury to the switch case.

Because 4 wheel drive gives improved traction, there’s a tendency to exceed protected turning and stopping speeds. Do not go sooner than highway situations allow.

Shift Positions

4 HI

Four Wheel Drive High Range – All roads surfaces resembling ice, snow, gravel, sand, and dry laborious pavement.

WARNING! You or others might be injured when you go away the car unattended with the switch case within the N (Neutral) place with out first absolutely partaking the parking brake. The switch case N (Neutral) place disengages each the entrance and rear driveshafts from the powertrain and can permit the car to maneuver whatever the transmission place. The parking brake ought to all the time be utilized when the driving force isn’t within the car.

N (Neutral)

Neutral – Disengages each the entrance and rear driveshafts from the powertrain. To be used for flat towing behind one other car. Refer to “Recreational Towing” in Section 5 of this guide.

4 LOW

Four Wheel Drive Low Range – Low velocity 4 wheel drive. Locks the entrance and rear driveshafts collectively. Forces the entrance and rear wheels to rotate on the identical velocity. Additional traction and most pulling energy for unfastened, slippery highway surfaces solely. Do not exceed 25 mph (40 km/h).

Shifting Procedures:

4 HI to 4 LOW

With the car at speeds of 0 to three mph (0 to five km/h), key ON or engine working, shift the transmission into N (Neutral), and lift the switch case T-handle. “The 4WD LOW Indicator Lamp” within the instrument cluster will start to flash and stay on stable when the shift is full. Release the T-handle.

NOTE: If shift situations/interlocks are usually not met, or a switch case motor temperature safety situation exists, a “CHECK SHIFT PROCEDURES” message will flash from the EVIC (Electronic Vehicle Information Center).

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4 LOW to 4 Hi

With the car at speeds of 0 to three mph (0 to five km/h), key ON or engine working, shift the transmission into N (Neutral), and lift the switch case T-handle. The “4WD LOW Indicator Lamp” within the instrument cluster will flash and exit when the shift is full. Release the T-handle.

NOTE: If shift situations/interlocks are usually not met, or a switch case motor temperature safety situation exists, a “CHECK SHIFT PROCEDURES” message will flash from the EVIC.

NOTE: Shifting into or out of 4WD LOW is feasible with the car utterly stopped, nevertheless problem could happen as a result of mating clutch tooth not being correctly aligned. Several makes an attempt could also be required for clutch tooth alignment and shift completion to happen. The most well-liked technique is with the car rolling 0 to three mph (0 to five km/h). If the car is shifting sooner than 3 mph (5 km/h), the switch case won’t permit the shift.

Neutral (N) Shift Procedure

1. Key ON, engine off.

2. Vehicle stopped, with foot on brake.

3. Place transmission in N (Neutral).

4. Hold down N (Neutral) “pin” change (with a pen, and so on.) for 4 seconds till the LED lamp by the change begins to blink indicating shift in progress. Lamp will cease blinking (keep on stable) when Neutral shift is full. A “4WD SYSTEM IN NEUTRAL” message will show on the EVIC.

5. Repeat Steps 1- 4 to shift out of Neutral.

NOTE: If shift situations/interlocks are usually not met, a “CHECK SHIFT PROCEDURES” message will flash from the EVIC.

Quadra-Drive® System

The non-obligatory Quadra-Drive” System, accessible solely on Limited fashions, options three torque switch couplings. The couplings embrace ELSE (Electronic Limited Slip Differential) entrance and rear axles and Quadra-Trac II® switch case. The non-obligatory ELSE axles are absolutely automated and require no driver enter to function. Under regular driving situations the items perform as commonplace axles balancing torque evenly between left and proper wheels. With a traction distinction between left and proper wheels the coupling will sense a velocity distinction. As one wheel begins to spin sooner than the opposite, torque will mechanically switch from the wheel that has much less traction to the wheel that has traction.

While the switch case and axle couplings differ in design, their operation is comparable. Follow the Quadra-Trac II switch case shifting info above for shifting this technique.

WK off-road driving ideas from Jeep

NOTE: Prior to off-road driving, take away the entrance air dam to stop injury. The entrance air dam is connected to the decrease entrance fascia with quarter flip fasteners, and might be eliminated by hand.

When To Use 4WD LOW Range

When off-road driving, shift to 4WD LOW for added traction. This vary ought to be restricted to excessive conditions resembling deep snow, mud, or sand the place extra low velocity pulling energy is required. Vehicle speeds in extra of 25 mph (40 km/h) ought to be prevented when in 4WD LOW vary.

Driving Through Water

Although your car is able to driving by water, there are a selection of precautions that should be thought-about earlier than getting into the water:

CAUTION! When driving by water, don’t exceed 5 mph (8 km/h). Always examine water depth earlier than getting into as a precaution, and examine all fluids afterward. Driving by water could trigger injury that will not be coated by the brand new car restricted guarantee. Driving by water quite a lot of inches deep will I require further warning to make sure security and forestall injury to your car. If it’s essential to drive by water, attempt to decide the depth and the underside situation (and site of any obstacles) previous to getting into. Proceed with warning and preserve a gradual managed velocity lower than 5 mph (8 km/h) in deep water to reduce wave results.

Flowing Water

If the water is swift flowing and rising (as in storm run-off) keep away from crossing till the water stage recedes and/or the stream charge is decreased. If it’s essential to cross flowing water keep away from depths in extra of 9 inches. The flowing water can erode the streambed inflicting your car to sink into deeper water. Determine exit level(s) which can be downstream of your entry level to permit for drifting.

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Standing Water

Avoid driving in standing water deeper than 20 inches, and scale back velocity appropriately to reduce wave results. Maximum velocity in 20 inches of water is lower than 5 mph (8 km/h).

Maintenance

After driving by deep water, examine your car fluids and lubricants (engine oil, transmission oil, axle, switch case) to guarantee the fluids haven’t been contaminated. Contaminated fluid (milky, foamy in look) ought to be flushed/modified as quickly as attainable to stop element injury.

Driving In Snow, Mud and Sand

In heavy snow, when pulling a load, or for added management at slower speeds, shift the transmission to a low gear and shift the switch case to 4WD LOW if vital. Refer to “Four-Wheel Drive Operation” above. Do not shift to a decrease gear than vital to keep up headway. Over-revving the engine can spin the wheels and traction can be misplaced.

Avoid abrupt downshifts on icy or slippery roads, as a result of engine braking could trigger skidding and lack of management.

Hill Climbing

NOTE: Before making an attempt to climb a hill, decide the situations on the crest and/or on the opposite facet.

Before climbing a steep hill, shift the transmission to a decrease gear and shift the switch case to 4WD LOW. Use first gear and 4WD LOW for very steep hills.

If you stall or start to lose headway whereas climbing a steep hill, permit your car to come back to a cease and instantly apply the brakes. Restart the engine and shift to R (Reverse). Back slowly down the hill permitting the compression braking of the engine to assist regulate your velocity. If the brakes are required to regulate car velocity, apply them flippantly and keep away from locking or skidding the tires.

WARNING! If the engine stalls otherwise you lose headway or can’t make it to the highest of a steep hill or grade, by no means try to show round. To accomplish that could lead to tipping and rolling the car. Always again rigorously straight down a hill in R (Reverse) gear. Never again down a hill in N (Neutral) utilizing solely the brake.

Remember, by no means drive diagonally throughout a hill-always drive straight up or down. If the wheels begin to slip as you method the crest of a hill, ease off the accelerator and preserve headway by turning the entrance wheels slowly. This could present a recent “chew” into the floor and can normally present traction to finish the climb.

Traction Downhill

Shift the transmission right into a low gear and the switch case to 4WD LOW vary. Let the car go slowly down the hill with all 4 wheels turning towards engine compression drag. This will allow you to regulate the car velocity and path. When descending mountains or hills, repeated braking may cause brake fade with lack of braking management. Avoid repeated heavy braking by downshifting the transmission at any time when attainable.

After Driving Off-Road

Off-road operation places extra stress in your car than does most on-road driving. After going off-road it’s all the time a good suggestion to examine for injury. That manner you will get any issues taken care of immediately and have your car prepared while you want it .

  • Completely examine the underbody of your car. Check tires, physique construction, steering, suspension, and exhaust system for injury.
  • Check threaded fasteners for looseness, notably on the chassis, drivetrain elements, steering, and suspension. Retighten them, if required, and torque to the values specified within the Service Manual.
  • Check for accumulations of crops or brush. These issues might be a fireplace hazard. They may conceal injury to gas traces, brake hoses, axle pinion seals, and propeller shafts.
  • After prolonged operation in mud, sand, water, or related soiled situations, have brake rotors, wheels, brake linings, and axle yokes inspected and cleaned as quickly as attainable.
  • WARNING! Abrasive materials in any a part of the brakes could trigger extreme put on or unpredictable braking. You won’t have full braking energy while you want it to stop an accident. If you will have been working your car in soiled situations, get your brakes checked and cleaned as vital.
  • If you expertise uncommon vibration after driving in mud, slush or related situations, examine the wheels for impacted materials. Impacted materials may cause a wheel imbalance and releasing the wheels of it should right the state of affairs.

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