Jeep Liberty: Onboard Diagnostic System — OBD II
Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. When these systems are operating properly, your vehicle will provide excellent performance and fuel economy, as well as engine emissions well within current government regulations.
If any of these systems require service, the OBD II system will turn on the “Malfunction Indicator Light (MIL).” It will also store diagnostic codes and other information to assist your service technician in making repairs. Although your vehicle will usually be drivable and not need towing, see your authorized dealer for service as soon as possible.
CAUTION!
• Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and drivability. The
vehicle must be serviced before any emissions
tests can be performed.
• If the MIL is flashing while the engine is running, severe catalytic converter damage and power loss will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a “gASCAP” message will display in the odometer or a “CHECK gASCAP” message will be displayed in the Electronic Vehicle Information Center (EVIC). Refer to “Electronic Vehicle Information Center (EVIC)” in “Understanding Your Instrument Panel” for further information.
Tighten the gas cap until a clicking sound is heard.
This is an indication that the gas cap is properly tightened.
Press the odometer reset button to turn the message off.
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.
Engine Compartment — 3.7L
See also:
Jump Starting Instructions
WARNING:
• Never attempt to jump start your vehicle if the battery appears to be frozen.
Batteries in this condition may explode or rupture if jump starting is attempted.
• When making jumper cable connections, be certain that your hands ...
Seats
Seats
- Do not ride in a moving vehicle
when the seatback is reclined. This
can be dangerous. The shoulder belt
will not be against your body. In an
accident, you could be thrown into it
and receive neck or other serious
injuries. Yo ...
