2012 JEEP COMPASS check engine light

BRAKE SYSTEM
Your vehicle is equipped with power assisted brakes as
standard equipment. In the event power assist is lost for
any reason (for example, repeated brake applications
with the engine off), the brakes will still function. How-
ever, the effort required to brake the vehicle will be much
greater than that required with the power system oper-
ating.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. 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 would not have your full
braking capacity in an emergency.If either of the two hydraulic systems lose normal capa-
bility, the remaining system will still function with some
loss of overall braking effectiveness. This will be evident
by increased pedal travel during application and greater
pedal force required to slow or stop. In addition, if the
malfunction is caused by an internal leak, as the brake
fluid in the master cylinder drops, the “Brake Warning
Light” will light.
WARNING!
Driving a vehicle with the “Brake Warning Light” on
is dangerous. A significant decrease in braking per-
formance or vehicle stability during braking may
occur. It will take you longer to stop the vehicle or
will make your vehicle harder to control. You could
have a collision. Have the vehicle checked immedi-
ately.
5
STARTING AND OPERATING 313

persists, the message will appear the next time the
vehicle is started. This might indicate a damaged cap. If
the problem is detected twice in a row, the system will
turn on the MIL. Resolving the problem will turn the MIL
light off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.For states that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not
on when the engine is running, and that the OBD II
system is ready for testing. Normally, the OBD II system will be ready. The OBD II
system may
notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not
ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition key-actuated test,
which you can use prior to going to the test station. To
check if your vehicle’s OBD II system is ready, you must
do the following:
1. Turn the ignition switch to the ON position, but do not
crank or start the engine.
2. If you crank or start the engine, you will have to start
this test over.
3. As soon as you turn the ignition switch to the ON
position, you will see the MIL symbol come on as part of
a normal bulb check.
406 MAINTAINING YOUR VEHICLE

Once A Month
•Check the 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 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.
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S452 MAINTENANCE SCHEDULES

Automatic Transmission................299,429
Fluid and Filter Changes ............... 430
Fluid Level Check .................... 430
Fluid Type ......................... 429
Gear Ranges ........................ 301
Special Additives ..................... 430
Autostick ............................. 306
B-Pillar Location ........................ 332
Battery ............................... 413
Keyless Transmitter Replacement (RKE) ..... 25
Belts, Seat .............................. 86
Body Mechanism Lubrication ............... 417
Brake Assist System ...................... 317
Brake Fluid ............................ 447
Brake System ........................ 313,426
Anti-Lock (ABS) .................. 314,316
Master Cylinder ..................... 427
Parking ........................... 310 Warning Light
....................... 199
Brake, Parking .......................... 310
Brake/Transmission Interlock ............... 300
Brakes ............................. 313,426
Break-In Recommendations, New Vehicle ........ 84
Bulb Replacement ..................... 442,443
Bulbs, Light .......................... 88,442
Calibration, Compass ..................... 220
Capacities, Antifreeze (Engine Coolant) ........ 445
Capacities, Fluid ........................ 445
Caps, Filler Fuel .............................. 361
Oil (Engine) ................... 403,404,411
Power Steering ...................... 309
Car Washes ............................ 433
Carbon Monoxide Warning ...............85,360
Cargo Area Cover ....................... 183
Cargo Area Features ...................... 182
10
INDEX 477

Cargo CompartmentLight ............................. 182
Cargo Light ............................ 182
Cargo Load Floor ........................ 185
Cargo Tie-Downs ........................ 185
Cellular Phone ........................ 98,275
Center High Mounted Stop Light ............ 444
Chains, Tire ............................ 346
Changing A Flat Tire ..................... 382
Chart, Tire Sizing ........................ 328
Check Engine Light
(Malfunction Indicator Light) ............... 406
Checking Your Vehicle For Safety ............. 85
Checks, Safety ........................... 85
Child Restraint ........................ 75,77
Child Restraint Tether Anchors ............... 80
Child Restraint with Automatic Belts ........... 78
Child Safety Locks ........................ 34
Child Seat .............................. 82 Clean Air Gasoline
....................... 357
Cleaning Wheels ............................ 434
Climate Control ......................... 275
Clock ........................... 224,243,252
Clutch ............................... 427
Clutch Fluid ........................... 427
Coin Holder ........................... 181
Compact Disc (CD) Maintenance ............. 274
Compact Spare Tire ...................... 340
Compass .............................. 209
Compass Calibration ..................... 220
Compass Variance ....................... 221
Connector UCI .............................. 266
Universal Consumer Interface (UCI) ....... 266
Console .............................. 181
Contract, Service ........................ 469
Coolant (Antifreeze) ................... 445,446
478 INDEX

Electronic Roll Mitigation............... 318
Traction Control System ................ 316
Electronic Speed Control (Cruise Control) ...... 157
Electronic Stability Control (ESC) ............. 322
Electronic Vehicle Information Center (EVIC) .... 211
Emergency, In Case of Jacking ............................ 382
Jump Starting ....................... 392
Towing ............................ 399
Emission Control System Maintenance ......... 406
Engine ............................ 403,404
Block Heater ........................ 296
Break-In Recommendations .............. 84
Checking Oil Level ................... 409
Cooling ........................... 421
Exhaust Gas Caution ................85,360
Fuel Requirements .................... 357
Jump Starting ....................... 392
Oil ......................... 409,445,446Oil Change Interval
................... 410
Oil Filler Cap .................. 403,404,411
Oil Filter ........................... 446
Oil Selection ........................ 410
Oil Synthetic ........................ 411
Overheating ........................ 380
Temperature Gauge ................... 201
Enhanced Accident Response Feature .......... 71
Ethanol ............................... 358
Event Data Recorder ...................... 74
Exhaust Gas Caution ................. 39,85,360
Exhaust System ....................... 85,419
Exterior Lights .......................... 88
Filters Air Cleaner ......................... 412
Air Conditioning .................. 287,415
Engine Oil ....................... 412,446
480 INDEX

Flashers.............................. 380
Hazard Warning ..................... 380
Turn Signal .................... 88,197,444
Flooded Engine Starting ................... 295
Fluid Capacities ......................... 445
Fluid Leaks ............................. 88
Fluid Level Checks Automatic Transmission ................ 430
Power Steering ...................... 309
Fluid, Brake ........................... 447
Fluids ................................ 446
Fluids, Lubricants and Genuine Parts .......... 446
Fog Lights ....................... 149,208,443
Folding Rear Seat ........................ 144
Folding Rear Seat (Sedan) .................. 144
Four Wheel Drive ....................... 307
Systems ........................... 307
Four Wheel Drive Operation ................ 307
Freeing A Stuck Vehicle ................... 396 Fuel
.............................. 357,446
Adding ........................... 361
Additives .......................... 359
Capacity ........................... 445
Clean Air .......................... 357
Ethanol ........................... 358
Filler Cap (Gas Cap) .................. 361
Gasoline ........................... 357
Gauge ............................ 196
Light ............................. 197
Materials Added ..................... 359
Methanol .......................... 358
Octane Rating ....................... 357
Requirements ....................... 357
Tank Capacity ....................... 445
Fuel System Caution ..................... 362
Fueling ............................... 361
Fuses ................................ 438
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INDEX 481

Life of Tires............................ 343
Liftgate (Sedan) .......................... 38
Liftgate Window Wiper/Washer ............. 187
Light Bulbs .......................... 88,442
Lights .............................. 88,148
Airbag .................... 68,69,74,86,197
Alarm ............................ 201
Anti-Lock .......................... 198
Back-Up ........................... 444
Brake Assist Warning .................. 325
Brake Warning ...................... 199
Bulb Replacement .................... 443
Cargo ............................. 182
Center Mounted Stop .................. 444
Daytime Running .................... 149
Dimmer Switch, Headlight .............. 148
Electronic Stability Program (ESP) Indicator . . 325
Engine Temperature Warning ............ 199
Exterior ............................ 88 Fog .........................
149,208,443
Headlight Switch ..................... 148
Headlights ......................... 148
High Beam Indicator .................. 198
Instrument Cluster ................... 148
License ............................ 444
Lights On Reminder .................. 149
Low Fuel .......................... 197
Malfunction Indicator (Check Engine) ...... 207
Map Reading ....................... 152
Oil Pressure ........................ 197
Seat Belt Reminder ................... 198
Security Alarm (Theft Alarm) ..........18,201
Theft Alarm (Security Alarm) ............ 201
Tire Pressure Monitoring (TPMS) ......... 203
Traction Control ..................... 325
Turn Signal ................. 88,148,150,444
Voltage ............................ 196
Warning (Instrument Cluster Description) . . . 196
484 INDEX