Coolant level

Checking

1. Let the engine cool.
2. Turn the cap of the expansion tank slightly counterclockwise to allow any excess pressure to dissipate, and then open it.

3. The coolant level is correct if it lies between

3. The coolant level is correct if it lies between the minimum and maximum marks in the filler neck.

4. If the coolant is low, slowly add coolant up to

4. If the coolant is low, slowly add coolant up to the specified level; do not overfill.
5. Turn the cap until there is an audible click.
6. Have the cause of the coolant loss eliminated as soon as possible.

    See also:

    At a glance
    1 Control button 2 Mirror display ...

    Priority options
    The driver has priority The source selected via iDrive in the front is output on the vehicle loudspeakers and can be selected but not operated from the rear. Other audio or video sources ...

    Sound output
    Switching on/off When the ignition is switched off: press ON/OFF button on the radio. Muting When the ignition is switched on or the engine is running: press the ON/OFF button on the radio. ...