Seat belt buckle contact

The automatic engine start-stop function uses the seat belt buckle contact to detect whether the driver's 3-point automatic-reel belt is fastened. If the driver's 3-point automatic-reel belt is not closed, the automatic engine start-stop reacts differently according to the driving condition:

• When the engine is running a switch-off inhibitor is set and the engine not stopped
• If the engine is off the automatic engine start-stop is deactivated. A restart is possibly solely by using the start/stop button.

Courtesy of BMW OF NORTH AMERICA, INC.