2008 BMW 6 Series Owner's Manual - Page 74

Driving The system cannot allow the vehicle to drive off automatically in situations that make driving off considerably more difficult, e.g. on steep uphill grades, with a heavy trailer or before raised areas in the road. Near radio astronomy stations, the system radar is deactivated at speeds under 20 mph/ 30 km/h due to legal regulations. Be certain to interrupt the system when you pull into an exit lane for a highway offramp.< Also, vehicles traveling in a staggered manner on a freeway may cause a delay in the system's reaction to a vehicle in front of you or may cause the system to react to a vehicle actually in the lane next to you. Always be ready to take action or apply the brakes if necessary. In addition, the system is interrupted whenever the driver applies the vehicle brakes, shifts the transmission from drive/D to neutral/N, or deactivates DSC. After any interruption, the system will no longer automatically activate the vehicle brakes, which means the driver must intervene and resume manual braking. You should then reactivate the system only when you are fully aware of the prior speed and distance settings.< Active cruise control may brake when you reduce the stored desired speed; however, the driver must constantly monitor traffic and intervene if necessary. When you switch off the engine or ignition, active cruise control is fully switched off, too, and any settings you have selected are canceled. Unexpected lane change If a vehicle in front of you is behind a stopped vehicle and unexpectedly changes lanes, you must react yourself, as the system does not react to stopped vehicles. Swerving vehicles When a vehicle swerves out of adjacent lanes into your lane, the system does not detect the vehicle until it is completely in your lane. When a vehicle ahead suddenly swerves into your lane, the system may not be able to restore the selected distance automatically. This also applies to great differences in speed between your vehicle and vehicles ahead, e.g. when quickly approaching a truck. Once the system has established that a vehicle is indeed in front of you, it will indicate that you must brake and/or maneuver the vehicle yourself. Take action yourself, otherwise there is a risk of an accident.< 72 Online Edition for Part no. 01 41 0 014 242 - © 08/07 BMW AG