188 Driving and operating9 WarningWhen adaptive cruise control isdeactivated, the driver must takeover full brake and engine control.Switching offPress C to switch off adaptive cruisecontrol. The control indicator m or Cextinguishes. The stored speed isdeleted.Switching off the ignition alsoswitches off adaptive cruise controland deletes the stored speed.Driver's attention● Use adaptive cruise controlcarefully on bends or mountainroads, as it can lose the vehicleahead and need time to detect itagain.● Do not use the system onslippery roads as it can createrapid changes in tyre traction(wheel spinning), so that youcould lose control of the vehicle.● Do not use adaptive cruisecontrol during rain, snow orheavy dirt, as the radar sensorcan be covered by a water film,dust, ice or snow. This reduces orsuppresses completely thevisibility. In case of sensorblockage, clean the sensorcover.System limits● The system's automatic brakeforce does not permit hardbraking and the braking levelmay not be sufficient to avoid acollision.● After a sudden lane change, thesystem needs a certain time todetect the next precedingvehicle. So if a new vehicle isdetected, the system mayaccelerate instead of braking.● Adaptive cruise control doesignore the oncoming traffic.● Adaptive cruise control does notbrake for pedestrians, animals,very slow speed driving orstopped vehicles.● Don't use adaptive cruise controlwhen towing a trailer.BendsThe adaptive cruise control calculatesa predicted path based on thecentrifugal force. This predicted pathconsiders the current bendcharacteristic, but cannot consider afuture bend change. The system maylose the current vehicle ahead orconsider a vehicle which is not in theactual lane. This can happen whenentering or exiting a bend or if thebend gets stronger or weaker. If it nolonger detects any vehicle ahead,then control indicator A willextinguish.
