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Home >> BMW >> 2009 >> 528i Standard >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Towing - Service Information >> Electrically Operated Trailer Coupling >> System functions >> Emergency operation

Emergency operation

If the power supply is interrupted during operation, various signal conditions could be lost.

When power is available again, the button must be pressed and held for 5 seconds. This will switch the drive on (emergency operation).

If the power supply is interrupted, the trailer coupling cannot be released.