2015 Jeep Compass Owner Manual - Page 472

470 MAINTAINING YOUR VEHICLE RESET button to turn off the message. If the problem 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 Normally, the OBD II system will be ready. The OBD II system may not be ready if your vehicle was recently serviced, recently had a dead battery or a battery replacement. 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 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: In some localities, it may be a legal requirement to pass an inspection of your vehicle's emissions control system. 1. Cycle the ignition switch to the ON position, but do not crank or start the engine. Failure to pass could prevent vehicle registration. For states that require an Inspection and Mainte- NOTE: If you crank or start the engine, you will have to nance (I/M), this check verifies the "Malfunction start this test over. Indicator Light (MIL)" is functioning and is not 2. As soon as you cycle the ignition switch to the ON on when the engine is running, and that the OBD II position, you will see the MIL symbol come on as part system is ready for testing. of a normal bulb check.