Activate radio-ready state:
Some electronic systems/power consumers remain ready for operation.
The radio-ready state switches off automatically:
The radio-ready state remains active if, e.g., the ignition is automatically switched off for the following reasons:
If the engine is switched off and the ignition is switched on, the system automatically switches to the radio-ready state if the lights are turned off or, if correspondingly equipped, the daytime running lights are activated.
BMW X3 Service & Repair Manual > Starter lead: Replacing positive battery cable between starter motor, alternator and
positive battery connection point (N55)
Necessary preliminary work:
Read out the fault memory of the DME control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
REMOVE intake plenum.
Fold back cover (1).
Release nut underneath. Remove positive battery cable from battery positive terminal.
Remove protective ca ...