During a long period of disuseDuring a long period of disuse  - Automatic air conditioning* - For pleasant driving - Mitsubishi Carisma Owner's Manual - Mitsubishi Carisma

The air conditioning should be operated for at least five minutes each week, even in cold weather. This is to prevent poor lubrication of the compressor internal parts, and to maintain the air conditioning in the best operating condition.

If this procedure is not followed, the system may emit an unusual odour. This is not a fault in the system.

    See also:

    Waiting
    For short waiting periods, such as at traffic signals, the gearshift lever can be left in position and the vehicle held stationary with the service brake. For longer waiting periods with the engine ...

    If the DPF warning display and check engine warning lamp illuminate at the same time during vehicle operation
    If an abnormal condition occurs in the DPF system, the DPF warning display and check engine warning lamp illuminate. Have the system inspected at a MITSUBISHI MOTORS Authorized Service Point. ...

    Turbocharger operation
    Caution ► Do not run the engine at high speeds (for example, by revving it or by accelerating rapidly) immediately after starting it. ► Do not stop the engine immediately after high-s ...