210 Driving and operatingStow the coupling ball bar in the bagand secure by fixing the strap throughthe rear right lashing eye. Wraparound twice and tighten the strap tosecure the bag.Trailer stability assistIf the system detects snakingmovements, engine power is reducedand the vehicle/trailer combination isselectively braked until the snakingceases. While system is working keepsteering wheel as still as possible.Trailer stability assist is a function ofthe Electronic Stability Control 3 176.