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:
Windshield Wiper and Washer Lever
Windshield Wipers
To turn the windshield wipers on, move the lever up and down to one of the four
operating positions. In the “INT” position (if equipped), the wipers operate intermittently.
The “INT” position is very convenient for dri ...
Cautions on the handling of 4-wheel drive vehicles
Tyres and wheels
Since the driving torque can be applied to the 4 wheels, the driving performance
of the vehicle when operating in 4-wheel drive is greatly affected by the condition
of the tyres. Pay close attention to the tyres.
● Insta ...
