2008 JEEP GRAND CHEROKEE ECU

WARNING!
Riding the brakes can lead to brake failure and
possibly an accident. Driving with your foot resting
or riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You wouldn't have your full
braking capacity in an emergency.
Brake And Power Steering Hoses
When the vehicle is serviced for scheduled maintenance,
inspect surface of hoses and nylon tubing for evidence of
heat and mechanical damage. Hard and brittle rubber,
cracking, tears, cuts, abrasion, and excessive swelling
indicate deterioration of the rubber. Particular attention
should be made to examining those hose surfaces nearest
to high heat sources, such as the exhaust manifold.Insure nylon tubing in these areas has not melted or
collapsed.
Inspect all hose connections such as clamps and cou-
plings to make sure they are secure and no leaks are
present.
NOTE:Often, fluid such as oil, power steering fluid,
and brake fluid are used during assembly plant opera-
tions to facilitate the assembly of hoses to couplings.
Therefore, oil wetness at the hose-coupling area is not
necessarily an indication of leakage. Actual dripping of
hot fluid when systems are under pressure (during
vehicle operation), should be noted before a hose is
replaced based on leakage.
NOTE:Inspection of brake hoses should be performed
whenever the brake system is serviced and at every
engine oil change. Inspect hydraulic brake hoses for
surface cracking, scuffing, or worn spots. If there is any
evidence of cracking, scuffing, or worn spots, the hose
330 MAINTAINING YOUR VEHICLE

3. Squeeze the socket assembly tabs to remove it from the
housing.
4. Pull the bulb to remove it from the socket.
5. Replace the bulb, reinstall the socket, and reattach the
light assembly.Center High Mounted Stop Light (CHMSL)
1. Remove the two screws securing the CHMSL.
2.
Twist the bulb socket to remove from the CHMSL housing.
3. Pull the bulb out of the socket.
4. Replace the bulb, reinstall the socket and reattach the
CHMSL.
MAINTAINING YOUR VEHICLE 351
7

ABS (Anti-Lock Brake System)............175,254
Adding Engine Coolant (Antifreeze).......... 326
Adding Fuel........................... 282
Adding Washer Fluid..................... 168
Additives, Fuel......................... 280
Adjustable Pedals....................... 130
Air Conditioner Maintenance............... 319
Air Conditioning, Operating Tips............ 236
Air Conditioning Refrigerant............... 320
Air Pressure, Tires....................... 269
Airbag................................ 45
Airbag Deployment....................... 51
Airbag Light.......................53,67,175
Airbag Maintenance....................... 53
Alarm, Panic............................ 22
Alarm (Security Alarm).................18,176
Alarm System (Security Alarm)............... 18
Alignment and Balance................... 274
Alterations/Modifications, Vehicle............. 8Antenna, Satellite Radio................... 222
Antifreeze (Engine Coolant)..............325,352
Disposal............................ 327
Anti-Lock Brake System (ABS)............134,254
Anti-Lock Warning Light.................. 175
Anti-Theft System.....................18,176
Appearance Care........................ 333
Audio Systems (Radio).................... 212
Auto Down Power Windows................ 29
Automatic Dimming Mirror................. 74
Automatic Door Locks..................... 27
Automatic Headlights.................... 120
Automatic Temperature Control (ATC)......... 229
Automatic Transmission................247,333
Fluid Level Check...................... 333
Autostick............................. 250
Auxiliary Electrical Outlet (Power Outlet)...... 158
Auxiliary Power Outlet................... 158
386 INDEX

Cargo .............................. 162
Center Mounted Stop................... 351
Cruise.............................. 180
Daytime Running...................... 123
Dimmer Switch, Headlight............. 119,124
Electronic Stability Program (ESP)
Indicator.......................141,176,180
Electronic Throttle Control Warning......... 181
Fog ..........................123,181,350
Fuses............................... 338
Hazard Warning Flasher................. 298
Headlight Switch...................... 120
Headlights........................... 347
Headlights On With Wipers............... 121
High Beam Indicator.................... 174
Illuminated Entry....................... 19
Instrument Cluster..................120,122
Interior..........................122,125
Lights On Reminder.................... 123Low Fuel............................ 181
LowTire ............................ 177
Malfunction Indicator (Check Engine)........ 174
Map Reading......................... 125
Oil Pressure.......................... 176
Passing............................. 124
Reading..........................125,148
Rear Servicing........................ 350
Rear Tail............................ 350
Seat Belt Reminder..................... 180
Security Alarm (Theft Alarm).............. 176
Service.............................. 347
Service Engine Soon (Malfunction Indicator) . . . 174
Side Marker.......................... 350
SmartBeams.......................... 121
Tire Pressure Monitoring (TPMS)........... 177
Traction Control....................141,176
Turn Signal.................. 119,124,349,350
Vanity Mirror.......................... 77
394 INDEX

Child Restraint.......................56,63
Extender............................. 44
Front Seat............................ 36
Inspection............................ 67
Maintenance........................67,337
Pretensioners.......................... 42
Reminder............................ 180
Shoulder Belt Anchorage.................. 40
Seats................................. 104
Adjustment.......................... 104
Cleaning............................ 336
Easy Entry........................... 117
Head Restraints....................... 107
Heated...........................107,109
Lumbar Support....................... 106
Memory............................. 114
Power...........................106,107
Rear Folding.......................... 111
Reclining............................ 104Security Alarm (Theft Alarm).............18,176
Selection of Coolant (Antifreeze)............. 325
Selection of Oil......................... 313
Sentry Key (Immobilizer)................... 15
Sentry Key Programming................... 17
Sentry Key Replacement................... 16
Service Assistance....................... 376
Service Contract......................... 378
Service Engine Soon Light (Malfunction
Indicator)............................. 174
Service Manuals........................ 380
Setting the Clock..................198,213,215
Settings, Personal........................ 190
Shift Lock Manual Override................ 246
Shifting............................... 245
Automatic Transmission................. 245
Shoulder Belts........................... 36
Signals, Turn...................124,174,349,350
SmartBeams........................... 121
INDEX 399
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