Adaptive cruise control

Adaptive cruise control* - fault tracing and action

Updated 7/23/2018

The adaptive cruise control(ACC – Adaptive Cruise Control) helps the driver to maintain an even speed and 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 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 and Collision Warning 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.


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