Fig. 1 On the display of the instrument cluster: Slower
vehicle detected in the left-hand lane (illustration).
If the ACC detects a slower vehicle in the left-hand lane(left-hand traffic: in the right-hand lane), the ACC will brake
the vehicle gently within the system limits and can therefore prevent a prohibited overtaking manoeuvre. The
function is active from speeds of approx. 80 km/h (around 50 mph), but is not available in all countries.
Limits of the ACC
When not to use the ACC
For technical reasons, the ACC is not suitable for use in the following situations. Cancel control (→ Adaptive Cruise
Control (ACC)):
—Driving in heavy rain, snow or heavy spray.
—Driving through road works, tunnels or toll stations.
—Driving on twisting roads, e.g. mountain roads
—Driving off-road
—Driving in multi-storey car parks.
—Driving on roads with embedded metal objects, e.g. railway tracks.
—Driving on roads with loose chippings
—Vehicles without Inside Overtaking Prevention System:On roads with more than one lane, if other vehicles are
driving more slowly in the overtaking lane.
WARNING
Using the ACC in the situations listed above may lead to accidents, severe injuries and violations of the relevant
statutory regulations.
Delayed response
If the radar sensor is exposed to environmental conditions that impair sensor functioning, the system may detect this
only after a certain delay. For this reason, any restrictions to functions may be displayed only after a delay at the start
of the journey and when driving (→ Adaptive Cruise Control (ACC)).
Objects that cannot be detected
The radar sensor only detects vehicles moving in the same direction as your vehicle. It cannot detect:
—Persons
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