2015 JEEP GRAND CHEROKEE differential

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 Limited 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 “Elec-
tronic 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 thenapplies 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
benefit 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 phys-
ics from acting on the vehicle, nor can it increase
the traction afforded by prevailing road conditions.
•The BAS cannot prevent collisions, including those
resulting from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning.
(Continued)
5
STARTING AND OPERATING 427

WARNING!(Continued)
stability.ESC Offmode is intended for off-highway
or off-road use only.
NOTE:When the ESC is switched OFF, a feature of the
system remains active. This feature controls wheel spin
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.
ESC Activation/Malfunction Indicator Light And
ESC OFF Indicator Light
The “ESC Activation/Malfunction Indicator
Light” in the instrument cluster will come on
when the ignition switch is cycled to the ON/
RUN position. It should go out with the engine
running. If the “ESC Activation/Malfunction Indicator
Light” comes on continuously with the engine running, a
malfunction has been detected in the ESC system. If this
5
STARTING AND OPERATING 433

Cavity Cartridge Fuse Micro Fuse Description
F26 30 Amp Pink – Anti-lock Brakes/Stability Control Module/
Valves
F28 20 Amp Blue – Trailer Tow Backup Lights - If Equipped
F29 20 Amp Blue – Trailer Tow Parking Lights - If Equipped
F30 30 Amp Pink – Trailer Tow Receptacle - If Equipped
F32 30 Amp Pink – Drive Train Control Module
F34 30 Amp Pink – Slip Differential Control
F35 30 Amp Pink – Sunroof - If Equipped
F36 30 Amp Pink – Rear Defroster
F37 25 Amp Clear – Rear Blower Motor - If Equipped
F38 30 Amp Pink – Power Inverter 115V AC - If Equipped
F39 30 Amp Pink – Power Liftgate - If Equipped
F40 – 10 Amp Red Daytime Running Lights/Headlamp Level-
ing
F42 – 20 Amp Yellow Horn
7
MAINTAINING YOUR VEHICLE 577

Fluids, Lubricants And Genuine Parts...........592
Fog Lights...........................286, 587
Fog Light Service.........................587
Folding Rear Seat.........................156
Forward Collision Warning..................214
Four-Way Hazard Flasher...................500
Freeing A Stuck Vehicle.....................519
Front Axle (Differential).....................564
Fuel...................................471
Adding..............................475
Additives.............................473
Clean Air.............................471
Economy Mode........................405
Ethanol..............................471
Gasoline..............................471
Gauge...............................286
Materials Added........................473
Methanol.............................471
Octane Rating......................471, 592Requirements.......................471, 591
Tank Capacity..........................591
Fueling................................475
Fuses..................................574
Garage Door Opener (HomeLink®).........242, 249
Gasoline, Clean Air........................471
Gasoline (Fuel)...........................471
Gasoline, Reformulated.....................471
Gauges
Coolant Temperature.....................286
Fuel.................................286
Speedometer..........................286
Tachometer............................286
Gear Ranges.............................409
General Information....................210, 470
Glass Cleaning
...........................572
Gross Axle Weight Rating...................482
Gross Vehicle Weight Rating..................481
620 INDEX

Pregnant Women And Seat Belts...............59
Preparation For Jacking.....................505
Pretensioners
Seat Belts..............................60
Programming Transmitters (Remote Keyless Entry) . .22
Radial Ply Tires..........................451
Radiator Cap (Coolant Pressure Cap)...........560
Radio Operation..........................364
Radio Remote Controls.....................362
Radio (Sound Systems).....................340
Rain Sensitive Wiper System.................179
Rear Axle (Differential).....................564
Rear Camera............................237
Rear Cross Path..........................138
Rear Cupholder..........................265
Rear ParkSense System..................218, 227
Rear Seat, Folding.........................156
Rear Window Features.....................276Rear Wiper/Washer........................276
Reclining Front Seats.......................146
Recorder, Event Data.......................81
Recreational Towing.......................497
Reformulated Gasoline.....................471
Refrigerant..............................542
Reminder, Seat Belt.........................51
Remote Control
Starting System.......................24, 28
Remote Keyless Entry (RKE)..................22
Arm The Alarm.........................20
FCC General Information..................27
Panic Alarm............................25
Programming Additional Key Fobs.........19, 26
Programming Additional Transmitters.......19, 26
Remote Sound System (Radio) Controls.........362
Remote Starting System...................24, 28
Replacement Bulbs........................583
Replacement Keys.........................18
626 INDEX