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07 Driver support
07
* Option/accessory, for more information, see Introduction.
211
Adaptive cruise control* - fault tracing
and action
The adaptive cruise control (p. 199) (ACC –
Adaptive Cruise Control) helps the driver
maintain a safe distance from the vehicle
ahead.
If the combined instrument panel shows the
message
Radar blocked See manual this
means that the radar signals from the radar
sensor (p. 209) are blocked and that vehicles
in front of the car cannot be detected.
In turn this means that - apart from Adaptive
Cruise Control - Distance Warning (p. 214)
and Collision Warning (p. 223) with
Auto Brake are not operating either.
The following table presents examples of
possible causes for a message being shown
along with the appropriate action:
Cause Action
The radar surface in the grille is dirty or covered with ice or snow. Clean the radar surface in the grille from dirt, ice and snow.
Heavy rain or snow blocking the radar signals. No action. Sometimes the radar does not work during heavy rain or snowfall.
Water or snow from the road surface swirls up and blocks the
radar signals.
No action. Sometimes the radar does not work on a very wet or snowy road
surface.
The radar surface has been cleaned but the message remains. Wait. It could take several minutes for the radar to sense that it is no longer
blocked.
Related information
•
Adaptive cruise control (ACC)* (p. 199)
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