2012 JEEP GRAND CHEROKEE Differential

Differential (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 thebenefit of the system, you must applycontinuousbrak-
ing pressure during the stopping sequence (do not
“pump” the brakes). Do not reduce brake pedal pressure
unless braking is no longer desired. Once the brake pedal
is released, the BAS is deactivated.
WARNING!
The BAS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase the
traction afforded by prevailing road conditions. The
BAS cannot prevent collisions, including those re-
sulting from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning. The capa-
bilities of a BAS-equipped vehicle must never be
exploited in a reckless or dangerous manner which
could jeopardize the user’s safety or the safety of
others.
5
STARTING AND OPERATING 401

across an axle quite similarly to a limited slip differential.
If one wheel on an axle is spinning faster than the other,
the system will apply the brake of the spinning wheel
and allow more engine torque to be applied to the wheel
that is not spinning. To improve the vehicle’s traction
when driving with tire chains, or when starting off in
deep snow, sand, or gravel, it may be desirable to switch
to the “Partial Off” mode by momentarily pressing the
“ESC Off” switch.
WARNING!
With the ESC switched OFF, the enhanced vehicle
stability offered by ESC is unavailable. In an emer-
gency evasive maneuver, the ESC system will not
engage to assist in maintaining stability. The “Full
Off” ESC mode is intended for off-highway or off-
road only.
Trailer Sway Control (TSC)
TSC uses sensors in the vehicle to recognize an exces-
sively swaying trailer and will take the appropriate
actions to attempt to stop the sway. The system may
reduce engine power and apply the brake of the appro-
priate wheel(s) to counteract the sway of the trailer. TSC
will become active automatically once an excessively
swaying trailer is recognized. No driver action is re-
quired. Note that TSC cannot stop all trailers from
swaying. Always use caution when towing a trailer and
follow the trailer tongue weight recommendations. Refer
to “Trailer Towing” in “Starting and Operating” for
further information. When TSC is functioning, the “ESC
Activation/Malfunction Indicator Light” will flash, the
engine power may be reduced and you may feel the
brakes being applied to individual wheels to attempt to
stop the trailer from swaying. TSC is disabled when the
ESC system is in the “Partial Off” mode.
406 STARTING AND OPERATING

Cavity Cartridge
FuseMini
FuseDescription
M2 20 Amp
YellowElectronic Limit
Slip Differential/
Air Suspension
M3 20 Amp
YellowLiftgate/Headrest
M5 25 Amp
Natural115V AC Power
Inverter
M6 20 Amp
YellowCigar Lighter
M7 20 Amp
YellowPower Outlet #2
(Switchable)
M8 20 Amp
YellowFront Heated Seat
& Steering Wheel
M9 20 Amp
YellowRear Heated SeatsCavity Cartridge
FuseMini
FuseDescription
M10 15 Amp
BlueVideo/Universal
Garage Door
Opener
M11 10 Amp
RedHeating, Ventilation
& Air Conditioning
(Climate Control
System)
M12 30 Amp
GreenRadio/Amplifier
M13 20 Amp
YellowInstrument Cluster
M14 20 Amp
YellowBack Up Camera –
If Equipped
7
MAINTAINING YOUR VEHICLE 507

Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission MOPARATF+4Automatic Transmission Fluid or equivalent licensed
ATF+4product.
Transfer Case MOPARNV146 Transfer Case Fluid or equivalent. Usage of other fluid/
lubricants isNOTrecommended.
Axle Differential (Front-Rear) MOPARSynthetic Gear & Axle Lubricant SAE 75W-140 (API-GL5) or
equivalent.
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.
Power Steering Reservoir MOPARPower Steering Fluid +4, MOPARATF+4Automatic Trans-
mission Fluid or equivalent licensed ATF+4product.
7
MAINTAINING YOUR VEHICLE 519

Hazard Warning..................... 460
Turn Signal................. 99,286,513,514
Flipper Glass, Liftgate..................... 44
Flooded Engine Starting................... 379
Fluid Capacities......................... 517
Fluid Leaks............................. 99
Fluid Level Checks
Brake............................. 494
Cooling System...................... 489
Engine Oil......................... 476
Fluid, Brake........................... 494
Fluids, Lubricants and Genuine Parts.......... 518
Fog Light Service........................ 513
Fog Lights..........................286,513
Folding Rear Seat........................ 170
Forward Collision Warning...........224,303,324
Four-Way Hazard Flasher.................. 460
Front Axle (Differential)................... 496
Fuel................................. 435Additives.......................... 438
CleanAir .......................... 436
Conserving......................... 309
Ethanol........................... 436
Filler Cap (Gas Cap)...............440,443
Gasoline........................... 435
Gauge............................ 292
Light ............................. 304
Materials Added..................... 438
Methanol.......................... 436
Octane Rating....................... 435
Requirements....................435,517
Saver Mode........................ 309
Tank Capacity....................... 517
Fuel Optimizer......................... 309
Fuel Saver............................. 309
Fuel System Caution..................... 441
Fuses................................ 504
10
INDEX 553

Personal Settings........................ 317
Pets.................................. 94
Pets, Transporting........................ 94
Phone, Cellular......................... 111
Phone, Hands-Free (Uconnect™)............. 111
Placard, Tire and Loading Information......... 414
PolishingandWaxing ..................... 500
Power
Door Locks......................... 32
Inverter........................... 262
Lift Gate........................... 45
Mirrors ............................ 109
Outlet (Auxiliary Electrical Outlet)........ 258
Seats...........................156,158
Steering........................... 396
Sunroof.........................251,254
Tilt/Telescoping Steering Column......... 195
Windows........................... 40
Pregnant Women and Seat Belts.............. 66Pretensioners
Seat Belts........................... 60
Programmable Electronic Features............ 317
Programming Transmitters (Remote Keyless
Entry)................................. 22
Radial Ply Tires......................... 421
Radiator Cap (Coolant Pressure Cap).......... 492
Radio Operation........................ 361
Rain Sensitive Wiper System................ 192
Rear Axle (Differential).................... 496
Rear Camera........................... 237
Rear Cross Path......................... 152
Rear Cupholder......................... 264
Rear Park Sense System................... 229
Rear Seat, Folding....................... 170
Rear Window Defroster................... 275
Rear Window Features.................... 274
Rear Wiper/Washer...................... 274
10
INDEX 559