Procedures

61 00 ... Instructions For Disconnecting And Connecting Battery

Observe safety instructions for handling vehicle battery.

Before disconnecting battery:
Turn off the ignition and other electrical loads/consumers to prevent sparking when reconnecting.

NOTE: If the ignition is not turned off when the battery is disconnected, fault memories may be set in some control units.

IMPORTANT:
- There is a danger of mixing up battery leads: If the battery positive and negative leads are the same colour and you are in doubt, follow the polarity to the battery, then mark and cover the leads.
- The on-board computer and clock may lose your data.

General notes on disconnecting battery:
- Do not disconnect battery leads and leads from alternator and starter motor while engine is running.
- Cars with IBS on battery negative terminal:
Do not under any circumstances pull/lever off pole shoes by force.
Do not under any circumstances release socket-head cap screw of IBS.
- Disconnect terminal of battery negative lead from vehicle battery. Cover battery negative terminal(s) and secure.
- When work is carried out on the electrical system, faults may be caused in the fault memories of some control units when the battery is connected.
- When installing battery terminal: Tightening torque 61 21 1AZ.

After connecting battery:

IMPORTANT:
The scope of application of some systems may be restricted after a power supply interruption.
Likewise, individual settings may be lost.
Settings or activations must be carried out, depending on the equipment specification.
For example:
- If necessary, carry out adjustment of active steering
- If necessary, activate slide/tilt sunroof
- If necessary, activate power windows

Refer to the diagnosis system for further vehicle-specific information.