Coolant level
Checking
1. Let the engine cool.
2. Turn the cap of the expansion tank slightly
counterclockwise to allow any excess pressure
to dissipate, and then open it.

3. The coolant level is correct if it lies between the minimum and maximum marks in the filler neck.

4. If the coolant is low, slowly add coolant up to
the specified level; do not overfill.
5. Turn the cap until there is an audible click.
6. Have the cause of the coolant loss eliminated
as soon as possible.
See also:
Activating/deactivating the system
manually
Using the button
Press the button.
▷ LED comes on: Auto Start Stop function is
deactivated.
The engine is started during an automatic
engine stop.
The engine can only be stopped or st ...
The concept
The system issues a two-phase warning of a
danger of collision at speeds above approx.
10 mph/15 km/h.
The collision warning is available even if cruise
control has been deactivated.
It resp ...
Radar sensor
Position
Position
The radar sensor is integrated in the bumper.
Dirty or covered sensor
A dirty or covered sensor may hinder the detection
of vehicles.
▷ If necessary, clean the radar s ...
