AR54.10-P-1129-02CWB Check Battery Voltage By Means of the Instrument Cluster (IC)

AR54.10-P-1129-02CWB Check Battery Voltage By Means Of The Instrument Cluster (IC)
- with CODE (442) Comfort multifunction steering wheel

The current voltage of the on-board electrical system battery can be retrieved via the instrument cluster.
1. Place transmitter key in the control unit electronic ignition lock in position 1 (terminal 15R) or press the KEYLESS-GO start/stop button.

KEYLESS-GO start/stop button only on vehicles with code (889) Keyless-Go.

2. Select the displays of the trip odometer and odometer in the basic menu.
3. Press the "Accept phone call" button in the right button group, in addition press the "OK" button in the left button block. Keep both buttons pressed for approx. 3 s.
4. Confirm vehicle data menu with "OK" button.
5. Read off on-board power supply voltage in the instrument cluster.
6. To exit the workshop menu switch off ignition.