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Programming and Relearning



61 20 908 Carrying Out Battery "Power Reset"







IMPORTANT: Observe safety instructions for handling vehicle battery.







The following steps must be carried out for a "power reset":
- Switch off and disconnect battery charger
- Turn off ignition
Vehicles with ID transmitter: Remove identification sensor from slot
Vehicles with comfort access system: Make sure terminal is in 0 position

- 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.





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