2012 JEEP GRAND CHEROKEE brake light

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

•Do not overfill the coolant recovery bottle.
•Check engine coolant (antifreeze) freeze point in the
radiator and in the coolant recovery bottle. If engine
coolant (antifreeze) needs to be added, contents of
coolant recovery bottle must also be protected against
freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine which contains aluminum components.
•Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install only
the correct type thermostat. Other designs may result
in unsatisfactory coolant performance, poor gas mile-
age, and increased emissions.
Brake System
Fluid Level Check – Brake Master Cylinder
The fluid level in the master cylinder should be checked
whenever the vehicle is serviced, or immediately if the
brake system warning light is on. If necessary, add fluid
to bring level to the full mark on the side of the reservoir
of the brake master cylinder. Be sure to clean the top of
the master cylinder area before removing the cap. With
disc brakes, fluid level can be expected to fall as the brake
494 MAINTAINING YOUR VEHICLE

Information Center (EVIC)/Oil Change Required” in
“Understanding Your Instrument Panel” for further in-
formation.
At Each Stop For Fuel
•Check the engine oil level about five minutes after a
fully warmed engine is shut off. Checking the oil level
while the vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil only when
the level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required.
Once A Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering and add as
needed.
•Check all lights and other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
Required Maintenance Intervals
Refer to the Maintenance Schedules on the following
pages for the required maintenance intervals.
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
SMAINTENANCE SCHEDULES 523

Adaptive Cruise Control (ACC) (Cruise Control) . . 201
Adding Engine Coolant (Antifreeze).......... 491
Adding Fuel........................... 440
Additives, Fuel......................... 438
Air Conditioner Maintenance............... 481
Air Conditioning Refrigerant............... 482
Air Conditioning System.................. 361
Air Conditioning, Operating Tips............ 367
Air Pressure, Tires....................... 419
Airbag.............................. 67,76
Airbag Deployment....................... 78
Airbag Light..................... 75,80,97,284
Airbag Maintenance....................... 79
Airbag, Side........................ 70,73,76
Airbag, Window (Side Curtain)........... 71,73,76
Alarm (Security Alarm)................. 18,292
Alarm, Panic............................ 24
Alterations/Modifications, Vehicle............. 8
Antenna, Satellite Radio................... 347Anti-Lock Brake System (ABS).............. 400
Anti-Lock Warning Light.................. 291
Anti-Theft System....................... 292
Antifreeze (Engine Coolant)..............490,517
Disposal........................... 492
Appearance Care........................ 499
Assistance Towing....................... 125
Auto Down Power Windows................ 41
Automatic Dimming Mirror................ 108
Automatic Door Locks..................... 33
Automatic Headlights.................... 180
Automatic Temperature Control (ATC)......... 361
Automatic Transmission................382,498
Autostick.......................... 389
Fluid Level Check.................... 499
FluidType ......................... 498
Special Additives..................... 498
Autostick............................. 389
Auxiliary Electrical Outlet (Power Outlet)...... 258
548 INDEX

Auxiliary Power Outlet................... 258
B-Pillar Location........................ 414
Battery............................... 480
Keyless Transmitter Replacement (RKE)..... 24
Belts, Seat............................ 51,97
Blind Spot Monitoring.................... 146
Body Mechanism Lubrication............... 482
Brake Assist System...................... 401
Brake Control System, Electronic............. 400
Brake System........................... 494
Anti-Lock (ABS)..................... 400
Fluid Check........................ 494
Master Cylinder..................... 494
Parking........................... 397
Warning Light....................... 289
Brake/Transmission Interlock............... 382
Break-In Recommendations, New Vehicle........ 94
Bulb Replacement..................... 511,512Bulbs,Light ............................ 99
Calibration, Compass..................... 316
Camera, Rear........................... 237
Capacities, Fluid........................ 517
Caps, Filler
Fuel.............................. 440
Radiator (Coolant Pressure)............. 492
Car Washes............................ 500
Carbon Monoxide Warning............... 96,439
Cargo (Vehicle Loading)................... 443
Cargo Area Cover....................... 271
Cargo Area Features...................... 268
Cargo Compartment...................... 268
Light ............................. 269
CargoLight ............................ 269
Cargo Tie-Downs........................ 272
Cellular Phone....................... 111,361
Center High Mounted Stop Light............ 516
10
INDEX 549

Selection of Coolant (Antifreeze).......490,517
Cruise Control (Speed Control).............. 201
Cupholders............................ 264
Customer Assistance..................... 539
Data Recorder, Event...................... 81
Daytime Running Lights................... 182
Dealer Service.......................... 474
Defroster, Rear Window................... 275
Defroster, Windshield................... 97,366
Diagnostic System, Onboard................ 472
Disabled Vehicle Towing................... 468
Disposal
Antifreeze (Engine Coolant)............. 492
Door Locks............................. 31
Door Locks, Automatic.................... 33
Door Opener, Garage..................... 241Driving
Through Flowing, Rising, or Shallow
Standing Water...................... 394
Driving to Achieve Maximum Fuel Economy.... 309
Electric Remote Mirrors................... 109
Electrical Outlet, Auxiliary (Power Outlet)...... 258
Electronic Brake Control System............. 400
Anti-Lock Brake System................ 400
Brake Assist System................... 401
Electronic Roll Mitigation............... 402
Traction Control System................ 400
Electronic Roll Mitigation (ERM)............. 402
Electronic Speed Control (Cruise Control)....198,201
Electronic Stability Control (ESC)............. 402
Electronic Vehicle Information Center
(EVIC).............................286,294
Emergency, In Case of
Hazard Warning Flasher............... 460
10
INDEX 551

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

LightBulbs ............................. 99
Lights.............................. 99,179
Airbag...................... 75,80,97,284
Anti-Lock.......................... 291
Automatic Headlights................. 180
Back-Up........................... 514
Brake Assist Warning.................. 407
Brake Warning...................... 289
Bulb Replacement.................... 512
Cargo ............................. 269
Center Mounted Stop.................. 516
Daytime Running.................... 182
Dimmer Switch, Headlight.............. 179
Electronic Stability Program (ESP) Indicator . . 407
Exterior............................ 99
Fog ............................286,513
Fuses............................. 504
Hazard Warning Flasher............... 460
Headlights......................... 512Headlights On With Wipers............. 180
High Beam Indicator.................. 286
Hill Descent Control Indicator........... 286
Illuminated Entry..................... 21
Low Fuel.......................... 304
Malfunction Indicator (Check Engine)...... 284
Map Reading....................... 186
Reading........................186,240
Rear Servicing....................... 514
Rear Tail........................... 514
Seat Belt Reminder................... 289
Security Alarm (Theft Alarm)............ 292
Service............................ 512
Service Engine Soon (Malfunction
Indicator).......................... 284
Side Marker........................ 514
SmartBeams........................ 181
Tire Pressure Monitoring (TPMS)......... 287
Tow/Haul Indicator.................. 286
556 INDEX