Jeep Liberty: Loose Fuel Filler Cap Message - Onboard Diagnostic System — OBD II - Maintaining Your Vehicle - Jeep Liberty Owner's ManualJeep Liberty: 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.

    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. ...

    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 ...

    See also:

    Introduction
    The Driver Alert System is designed to help a driver who may be becoming fatigued or who is inadvertently leaving the lane. The Driver Alert System consists of two different functions that can ...

    Checking the vehicle and trailer weight
    To check that the weights of the towing vehicle and the trailer comply with the maximum permissible values, have the vehicle/trailer combination (including the driver, passengers, and cargo w ...

    Brakes and clutch
    Checking brake/clutch fluid level Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the reser ...