Display messages
Possible causes/consequences and MM Solutions
ErrErr
flashes for 5 seconds, the à indicator lamp also flashes and
then lights up constantly.
Lane Keeping Assist is deactivated and temporarily inoperative.
Possible causes are:
R
There are no lane markings present.
R
The camera's functionality is impaired due to heavy rain, snow or
fog.
R
The camera cannot recognize the road markings:
-
It is too dark.
-
The lane markings are worn or are covered, for example, by
dirt or snow.
R
The windshield is dirty in the camera's field of vision.
X
Stop the vehicle paying attention to road and traffic conditions.
X
Secure the vehicle to prevent it from rolling away (Y page 149).
X
Clean the windshield (Y page 267), particularly in the camera's
field of vision.
If the à indicator lamp goes out, Lane Keeping Assist is
operational again.
If the problem persists, visit a qualified specialist workshop.
¯
dEF ChkdEF Chk
In addition, the yellow ; Check Engine indicator lamp and the
yellow å DEF indicator lamp light up and a warning tone
sounds.
The DEF reducing agent is contaminated, diluted or is not compli-
ant with ISO 22241.
After the first message and under normal operating conditions,
you can drive on for up to approximately 50 miles (80 km). Then a
warning tone sequence sounds and the engine can only be started
another 10 times.
X
Have the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible.
200
Display messages
On-board computer and displays
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