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Electrically Operated Trailer Coupling: Introduction

The BMW 5 Series can be equipped with a fully automatic trailer coupling  (option 3AC "trailer coupling with electrically pivoted ball head").

The fully automatic trailer coupling (system supplier Westfalia) is operated by a button in the luggage compartment.

Briefly pressing the button prompts the ball head to pivot out or in as far as each limit position entirely automatically.

The system has a control unit that is not directly connected to the vehicle's bus system.

Modifications from 03/2007: 

To coincide with the new model appearing in 03/2007, the E60, E61 is equipped with option 3AC "trailer coupling with electrically pivoted ball head"). Since this time, a separate Check Control symbol has been provided for the system. In the event of a system error, the trailer module will generate a Check Control message. The instrument cluster displays the Check Control message.