2007 JEEP COMMANDER ECU

Pay particular attention to the hoses nearest to high heat
sources such as the exhaust manifold. Inspect hose rout-
ing to be sure hoses do not touch any heat source or
moving component that may cause heat damage or
mechanical wear.
Insure nylon tubing in these areas has not melted or
collapsed. Inspect all hose connections such as clamps
and couplings to make sure they are secure and no leaks
are present. Components should be replaced immedi-
ately if there is any evidence of degradation that could
cause failure.
Fuel System Connections
Electronic Fuel Injection high pressure fuel systems are
designed with tubes and special connects, connections
and clamps which have unique material characteristics to
provide adequate sealing and resist attack by deterio-
rated gasoline.You are urged to use only the manufactures-specified
tubes, connections and clamps, or their equivalent in
material and specification, in any fuel system servicing.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the appropriate “Maintenance Schedule” in
Section 8 for suggested service intervals.
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.
MAINTAINING YOUR VEHICLE 381
7

Brake and Power Steering System Hoses
When servicing the vehicle for scheduled maintenance,
inspect surface of hoses for evidence of heat and me-
chanical damage. Hard and brittle rubber, cracking, tears,
cuts, abrasion, and excessive swelling suggest deteriora-
tion of the rubber. Particular attention should be made to
examining those hose surfaces nearest to high heat
sources, such as the exhaust manifold.
Inspect all hose clamps and couplings to make sure they
are secure and no leaks are present.
NOTE:Often fluids such as oil, power steering fluid,
and brake fluid are used during assembly plant opera-
tions to ease the assembly of hoses to couplings. There-
fore, oil wetness at the hose-coupling area is not neces-
sarily an indication of leakage. Actual dripping of hot
fluid when systems are under pressure (during vehicle
operation) should be noted before hose is replaced based
on leakage.NOTE:Inspection of brake hoses should be done when-
ever the brake system is serviced and every engine oil
change.
WARNING!
Worn brake hoses can burst and cause brake failure.
You could have an accident. If you see any signs of
cracking, scuffing, or worn spots, have the brake
hoses replaced immediately.
Brake Master Cylinder — Brake Fluid Level Check
The fluid level in the master cylinder should be checked
when performing under hood services, or immediately if
the brake system warning lamp shows system failure
382 MAINTAINING YOUR VEHICLE

ABS (Anti-Lock Brake System)............177,275
Adding Fuel........................... 314
Adding Washer Fluid..................... 167
Adjustable Pedals....................... 130
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 366
Air Conditioner Maintenance............... 371
Air Conditioning........................ 235
Air Conditioning, Operating Tips............ 244
Air Conditioning, Rear Zone................ 242
Air Conditioning Refrigerant............... 372
Air Conditioning System.................. 235
Air Filter.............................. 366
Air Pressure, Tires....................... 289
Airbag................................ 46
Airbag Deployment....................... 53
Airbag Light.......................55,69,177
Airbag Maintenance....................... 54
Alarm (Security Alarm).................18,178
Alarm System (Security Alarm)............... 18Alignment and Balance................... 294
Alterations/Modifications, Vehicle............. 9
Antenna, Satellite Radio................... 230
Antifreeze (Engine Coolant)................ 402
Disposal............................ 379
Anti-Lock Brake System (ABS)............135,275
Anti-Lock Warning Light.................. 177
Anti-Theft System.....................18,178
Appearance Care........................ 388
Auto Down Power Windows................ 30
Automatic Dimming Mirror................. 77
Automatic Door Locks..................... 27
Automatic Headlights.................... 120
Automatic Temperature Control (ATC)......... 236
Automatic Transmission................256,385
Adding Fluid......................... 386
Fluid and Filter Changes................. 385
Fluid Level Check...................... 385
Fluid Type........................... 385
438 INDEX

Passing............................. 124
Reading............................. 125
Seat Belt Reminder..................... 182
Security Alarm (Theft Alarm).............. 178
Service Engine Soon (Malfunction Indicator) . . . 176
SmartBeams.......................... 121
Tire Pressure Monitoring (TPMS)........... 179
Tow/Haul Indicator.................... 181
Traction Control....................143,178
Turn Signal........................ 119,124
Vanity Mirror.......................... 79
Voltage............................. 183
Load Floor, Cargo....................... 165
Loading Vehicle......................... 317
Tires ............................... 284
Locks................................. 26
Automatic Door........................ 27
Child Protection........................ 28
Door................................ 26Power Door........................... 27
Lower Anchors and Tether for CHildren
(LATCH)............................61,63
Lubrication, Body....................... 373
Luggage Rack (Roof Rack)................. 168
Lumbar Support........................ 105
Maintenance Free Battery.................. 369
Maintenance Procedures................... 362
Maintenance Schedule.................... 406
Schedule “A”......................... 421
Schedule “B”......................... 409
Maintenance Schedules.................... 406
Malfunction Indicator Light (Check Engine) . . 176,359
Manual, Service......................... 434
Master Cylinder (Brakes).................. 382
Memory Feature (Memory Seat)............. 113
Memory Seat........................... 113
Memory Seats and Radio.................. 113
INDEX 447
10

Reclining............................ 104
Seatback Release....................... 111
Security Alarm (Theft Alarm).............18,178
Selection of Oil......................... 363
Sentry Key (Immobilizer)................... 15
Sentry Key Programming................... 17
Sentry Key Replacement................... 17
Service Assistance....................... 430
Service Contract......................... 432
Service Engine Soon Light
(Malfunction Indicator).................... 176
Service Manuals........................ 434
Setting the Clock..................201,215,221
Shifting............................... 255
Automatic Transmission................. 255
Shoulder Belts........................... 38
Signals, Turn........................124,176
Skylights, Command View................. 161
SmartBeams........................... 121Snow Chains (Tire Chains)................. 295
Snow Plow............................ 337
Spare Tire............................. 343
Spark Plug Wires (Ignition Cables/Wires)...... 366
Spark Plugs............................ 366
Specifications
Fuel (Gasoline)........................ 307
Oil ................................ 363
Speed Control (Cruise Control).............. 132
Speedometer........................... 176
Starting............................... 251
Automatic Transmission................. 251
Cold Weather......................252,255
Engine Block Heater.................... 255
Engine Fails to Start.................... 252
Remote.............................. 25
Steering
Power...........................278,372
Wheel, Tilt........................... 130
452 INDEX