differential JEEP GRAND CHEROKEE 2012 WK2 / 4.G Owners Manual

5. Repeat Steps 1 to 4 to shift out of NEUTRAL.
NOTE:If shift conditions/interlocks are not met, a “To
Tow Vehicle Safely, Read Neutral Shift Procedure in
Owners Manual” message will flash from the Electronic
Vehicle Information Center (EVIC). Refer to “Electronic Vehicle Information Center (EVIC)” in “Understanding
Your Instrument Panel” for further information.
Quadra-Drive
II System – If Equipped
The optional Quadra-Drive II System features two
torque transfer couplings. The couplings include an
Electronic Limited-Slip Differential (ELSD) rear axle and
the Quadra-Trac II transfer case. The optional ELSD axle
is fully automatic and requires no driver input to operate.
Under normal driving conditions, the unit functions as a
standard axle, balancing torque evenly between left and
right wheels. With a traction difference between left and
right wheels, the coupling will sense a speed difference.
As one wheel begins to spin faster than the other, torque
will automatically transfer from the wheel that has less
traction, to the wheel that has traction. While the transfer
case and axle coupling differ in design, their operation is
similar. Follow the Quadra-Trac II transfer case shifting
information, preceding this section, for shifting this
system.
Neutral Switch
5
STARTING AND OPERATING 445

WARNING! (Continued)
•Be sure the parking brake is fully disengaged
before driving; failure to do so can lead to brake
failure and a collision.
•Always fully apply the parking brake when leav-
ing your vehicle, or it may roll and cause damage
or injury. Also be certain to leave the transmission
in PARK. Failure to do so may allow the vehicle to
roll and cause damage or injury.
CAUTION!
If the “Brake Warning Light” remains on with the
parking brake released, a brake system malfunction
is indicated. Have the brake system serviced by an
authorized dealer immediately.
ELECTRONIC BRAKE CONTROL SYSTEM
Your vehicle is equipped with an advanced electronic
brake control system that includes the Anti-Lock Brake
System (ABS), Traction Control System (TCS), Brake
Assist System (BAS), Electronic Roll Mitigation (ERM),
and Electronic Stability Control (ESC). All five of these
systems work together to enhance vehicle stability and
control in various driving conditions.
Also, your vehicle is equipped with Trailer Sway Control
(TSC), Hill Start Assist (HSA), Brake Lock Differential
(BLD), Ready Alert Braking, Rain Brake Support and, if it
has four-wheel drive with the MP 3023 two-speed trans-
fer case, Hill Descent Control (HDC).
Anti-Lock Brake System (ABS)
This system aids the driver in maintaining vehicle control
under adverse braking conditions. The system controls
hydraulic brake pressure to prevent wheel lock-up and
help avoid skidding on slippery surfaces during braking.
464 STARTING AND OPERATING

WARNING!
The ABS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase the
traction afforded by prevailing road conditions. The
ABS cannot prevent collisions, including those re-
sulting from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning. The capa-
bilities of an ABS-equipped vehicle must never be
exploited in a reckless or dangerous manner which
could jeopardize the user’s safety or the safety of
others.
Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system, Brake LimitedDifferential (BLD), functions similar to a limited-slip
differential and controls the wheel spin across a driven
axle. If one wheel on a driven axle is spinning faster than
the other, the system will apply the brake of the spinning
wheel. This will allow more engine torque to be applied
to the wheel that is not spinning. This feature remains
active even if ESC system is in the “Partial Off” mode.
Refer to “Electronic Stability Control (ESC)” in this
section for further information.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing the rate and amount of brake application and then
applies optimum pressure to the brakes. This can help
reduce braking distances. The BAS complements the
anti-lock brake system (ABS). Applying the brakes very
quickly results in the best BAS assistance. To receive the
5
STARTING AND OPERATING 465

Cavity CartridgeFuseMini
Fuse Description
J18 20 Amp Blue Powertrain Control
Module/Powertrain
Control Module
Transmission Range
J19 60 Amp Yellow Radiator Fan Motor
HI/Radiator Fan
Motor Low
J20 30 Amp Pink Front Wiper
J21 20 Amp Blue Front/Rear Washer
Control
J22 25 Amp Natural Sunroof Module
M1 15 Amp BlueStop LampsCavity Cartridge
FuseMini
Fuse Description
M2 20 Amp YellowElectronic Limit
Slip Differential/
Air Suspension
M3 20 Amp
Yellow Liftgate/Headrest
M5 25 Amp
Natural 115V AC Power
Inverter
M6 20 Amp
Yellow Cigar Lighter
M7 20 Amp
Yellow Power Outlet #2
(Switchable)
M8 20 Amp
Yellow Front Heated Seat
& Steering Wheel
M9 20 Amp
Yellow Rear Heated Seats
612 MAINTAINING YOUR VEHICLE

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission MOPARATF+4Automatic Transmission Fluid or equivalent licensed
ATF+4 product.
Transfer Case – 3.6L Engine Shell Automatic Transmission Fluid 3353 or equivalent.
Transfer Case – 5.7L Engine MOPAR ATF+4Automatic Transmission Fluid or equivalent licensed
ATF+4 product.
Axle Differential (Front-Rear) We recommend you use MOPAR GL-5 Synthetic Axle Lubricant
SAE 75W-85.
Axle Differential (Rear) – 5.7L
Engine With Electronic Limited-Slip
Differential (ELSD) We recommend you use MOPAR
GL-5 Synthetic Axle Lubricant
SAE 75W-85 with friction modifier additive.
Axle Differential (Rear) – 5.7L
Engine Without Electronic
Limited-Slip Differential (ELSD) We recommend you use MOPAR
GL-5 Synthetic Axle Lubricant
SAE 75W-85.
Brake Master Cylinder MOPARDOT 3 Brake Fluid, SAE J1703 should be used. If DOT 3, SAE
J1703 brake fluid is not available, then DOT 4 is acceptable. Use only rec-
ommended brake fluids or equivalent.
624 MAINTAINING YOUR VEHICLE

Engine Oil......................... 579
Power Steering ...................... 461
Fluids, Lubricants and Genuine Parts .......... 623
Fog Light Service ........................ 619
Fog Lights .......................... 287,619
Folding Rear Seat ........................ 171
Forward Collision Warning ...........224,306,326
Four Wheel Drive ..................... 440,446
Operation .......................... 440
Systems ........................... 440
Four Wheel Drive Operation ................ 440
Four-Way Hazard Flasher .................. 548
Freeing A Stuck Vehicle ................... 563
Front Axle (Differential) ................... 599
Fuel ................................. 509
Additives .......................... 512
Clean Air .......................... 510
Conserving ......................... 311
Ethanol ........................... 510 Filler Cap (Gas Cap)
...............517,520
Gasoline ........................... 509
Gauge ............................ 293
Light ............................. 306
Materials Added ..................... 512
Methanol .......................... 510
Requirements ....................... 622
Saver Mode ........................ 311
Tank Capacity ....................... 622
Fuel Optimizer ......................... 311
Fuel Saver ............................. 311
Fuel System Caution ..................... 519
Fuel, Flexible ........................... 513
Fuses ................................ 610
Garage Door Opener (HomeLink®) ........... 242
Gas Cap (Fuel Filler Cap) ............517,520,575
Gasoline (Fuel) ......................... 509
Conserving ......................... 311
662 INDEX

Panic Alarm............................ 26
Park Sense System, Rear ................... 229
Parking Brake .......................... 462
Personal Settings ........................ 319
Pets .................................. 93
Pets, Transporting ........................ 93
Phone, Cellular ......................... 121
Phone, Hands-Free (Uconnect™) ............. 121
Placard, Tire and Loading Information ......... 483
Polishing and Waxing ..................... 605
Power Door Locks ......................... 34
Inverter ........................... 262
Lift Gate ........................... 46
Mirrors ............................ 110
Outlet (Auxiliary Electrical Outlet) ........ 258
Seats ........................... 156,158
Steering ........................ 459,461
Sunroof ......................... 251,254Tilt/Telescoping Steering Column
......... 195
Windows ........................... 41
Pregnant Women and Seat Belts .............. 66
Preparation for Jacking .................... 551
Pretensioners Seat Belts ........................... 61
Programmable Electronic Features ............ 319
Programming Transmitters
(Remote Keyless Entry) .................... 24
Quadra-Lift ............................ 448
Quadra-Trac ......................... 440,441
Radial Ply Tires ......................... 490
Radio Operation ........................ 394
Rain Sensitive Wiper System ................ 192
Rear Axle (Differential) .................... 599
Rear Camera ........................... 237
Rear Cross Path ......................... 118
668 INDEX