61 20 908 Run battery "Power reset" (to program/encode control unit(s))
IMPORTANT:
Observe safety information for HANDLING VEHICLE BATTERY .
The following steps must be carried out for a "power reset":
- Switch off and disconnect battery charger
- Switch off ignition
For vehicles with ignition key: Ignition key in position 0
Vehicles with ID transmitter: Remove ID transmitter from slot
Vehicles with comfort access system: Secure terminal 30
- Disconnect battery negative terminal
- Reconnect battery negative terminal (to ensure bus activity)
- Waiting time (5-10 seconds)
- Disconnect battery negative terminal
- Waiting time (1 minute)
- Connect battery negative terminal and tighten, tightening torque 61 21 1AZ
- Connect and switch on battery charger
- Switch on ignition.