2012 JEEP PATRIOT check engine light

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 maynotbe 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.
416 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.
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S460 MAINTENANCE SCHEDULES

Automatic Transmission................300,439
Fluid and Filter Changes............... 440
Fluid Level Check.................... 440
Fluid Type......................... 439
Gear Ranges........................ 303
Special Additives..................... 440
Autostick............................. 308
B-Pillar Location........................ 342
Battery............................... 423
Keyless Transmitter Replacement (RKE)..... 25
Belts, Seat.............................. 86
Body Mechanism Lubrication............... 427
Brake Assist System...................... 327
Brake Fluid............................ 456
Brake System........................323,436
Anti-Lock (ABS)..................324,327
Master Cylinder..................... 437
Parking........................... 321Warning Light....................... 201
Brake, Parking.......................... 321
Brake/Transmission Interlock............... 302
Brakes.............................323,436
Break-In Recommendations, New Vehicle........ 84
Bulb Replacement.....................452,453
Bulbs, Light..........................88,452
Calibration, Compass..................... 222
Capacities, Antifreeze (Engine Coolant)........ 454
Capacities, Fluid........................ 454
Caps, Filler
Fuel.............................. 371
Oil (Engine)...................413,414,421
Power Steering...................... 320
Car Washes............................ 443
Carbon Monoxide Warning...............85,370
Cargo Area Cover....................... 183
Cargo Area Features...................... 182
10
INDEX 485

Cargo Compartment
Light............................. 182
Luggage Carrier..................... 189
Cargo Light............................ 182
Cargo Load Floor........................ 185
Cargo Tie-Downs........................ 185
Cellular Phone........................99,276
Center High Mounted Stop Light............ 454
Chains, Tire............................ 355
Changing A Flat Tire..................... 392
Chart, Tire Sizing........................ 338
Check Engine Light
(Malfunction Indicator Light)............... 416
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........................ 33Child Seat.............................. 82
Clean Air Gasoline....................... 367
Cleaning
Wheels............................ 444
Climate Control......................... 276
Clock...........................226,244,253
Clutch............................... 437
Clutch Fluid........................... 437
Coin Holder........................... 181
Compact Disc (CD) Maintenance............. 275
Compact Spare Tire...................... 350
Compass.............................. 211
Compass Calibration..................... 222
Compass Variance....................... 222
Connector
UCI .............................. 267
Universal Consumer Interface (UCI)....... 267
Console.............................. 181
Contract, Service........................ 477
486 INDEX

Electronic Brake Control System............. 326
Anti-Lock Brake System................ 327
Brake Assist System................... 327
Electronic Roll Mitigation............... 328
Traction Control System................ 328
Electronic Speed Control (Cruise Control)...... 158
Electronic Stability Control (ESC)............. 332
Electronic Vehicle Information Center (EVIC).... 213
Emergency, In Case of
Jacking............................ 392
Jump Starting....................... 402
Towing............................ 409
Emission Control System Maintenance......... 416
Engine............................413,414
Block Heater........................ 298
Break-In Recommendations.............. 84
Checking Oil Level................... 419
Cooling........................... 431Exhaust Gas Caution................85,370
Fuel Requirements.................... 367
Jump Starting....................... 402
Oil .........................419,454,455
Oil Change Interval................... 420
Oil Filler Cap..................413,414,421
Oil Filter........................... 455
Oil Selection........................ 420
Oil Synthetic........................ 421
Overheating........................ 390
Temperature Gauge................... 203
Enhanced Accident Response Feature.......... 71
Ethanol............................... 368
Event Data Recorder...................... 74
Exhaust Gas Caution.................38,85,370
Exhaust System.......................85,429
Exterior Lights.......................... 88
488 INDEX

Filters
Air Cleaner......................... 422
Air Conditioning..................288,425
Engine Oil.......................422,455
Flashers.............................. 390
Hazard Warning..................... 390
Turn Signal....................88,199,453
Flooded Engine Starting................... 297
Fluid Capacities......................... 454
Fluid Leaks............................. 88
Fluid Level Checks
Automatic Transmission................ 440
Power Steering...................... 320
Fluid, Brake........................... 456
Fluids................................ 455
Fluids, Lubricants and Genuine Parts.......... 455
Fog Lights.......................150,210,453
Folding Rear Seat........................ 145
Folding Rear Seat (Sedan).................. 145Four Wheel Drive....................... 309
Systems........................... 309
Four Wheel Drive Operation................ 309
Freeing A Stuck Vehicle................... 406
Fuel..............................367,455
Adding........................... 371
Additives.......................... 369
Capacity........................... 454
Clean Air.......................... 367
Ethanol........................... 368
Filler Cap (Gas Cap).................. 371
Gasoline........................... 367
Gauge............................ 198
Light............................. 199
Materials Added..................... 369
Methanol.......................... 368
Octane Rating....................... 367
Requirements....................... 367
Tank Capacity....................... 454
10
INDEX 489

Lead Free Gasoline...................... 367
Leaks, Fluid............................ 88
Life of Tires............................ 353
Liftgate (Sedan).......................... 37
Liftgate Window Wiper/Washer............. 187
Light Bulbs..........................88,452
Lights..............................88,149
Airbag....................68,69,74,86,199
Alarm............................ 203
Anti-Lock.......................... 200
Back-Up........................... 453
Brake Assist Warning.................. 335
Brake Warning...................... 201
Bulb Replacement.................... 453
Cargo ............................. 182
Center Mounted Stop.................. 454
Daytime Running.................... 150
Dimmer Switch, Headlight.............. 149
Electronic Stability Program (ESP) Indicator . . 335Engine Temperature Warning............ 201
Exterior............................ 88
Fog .........................150,210,453
Headlight Switch..................... 150
Headlights......................... 150
High Beam Indicator.................. 200
Instrument Cluster................... 150
License............................ 454
Lights On Reminder.................. 150
Low Fuel.......................... 199
Malfunction Indicator (Check Engine)...... 209
Map Reading....................... 153
Oil Pressure........................ 199
Seat Belt Reminder................... 200
Security Alarm (Theft Alarm)..........18,203
Theft Alarm (Security Alarm)............ 203
Tire Pressure Monitoring (TPMS)......... 205
Traction Control..................... 335
Turn Signal.................88,149,151,453
492 INDEX

Voltage............................ 198
Warning (Instrument Cluster Description) . . . 198
Loading Vehicle......................373,375
Capacities.......................... 375
Tires .............................. 342
Locks
Automatic Door...................... 31
Child Protection...................... 33
Door.............................. 29
Power Door......................... 30
Lubrication, Body....................... 427
Luggage Rack (Roof Rack)................. 189
Lumbar Support........................ 139
Maintenance Free Battery.................. 423
Maintenance Procedures................... 418
Maintenance Schedule.................... 458
Maintenance, General..................... 418
Malfunction Indicator Light (Check Engine). . . 209,416Manual Transaxle.....................295,298
Downshifting....................... 300
Fluid Level Check.................... 441
Frequency of Fluid Change...........441,442
Lubricant Selection................... 441
Manual Transmission..................... 440
Fluid Level Check.................... 440
Frequency of Fluid Change............. 441
Lubricant Selection................... 440
Manual, Service......................... 479
Map/Reading Lights..................... 153
Master Cylinder (Brakes).................. 437
Methanol............................. 368
Mini-Trip Computer...................... 211
Mirrors................................ 94
Automatic Dimming................... 95
Electric Powered...................... 96
Exterior Folding...................... 98
Heated............................. 9810
INDEX 493