Def Reducing Agent - Mercedes-Benz Sprinter Operator's Manual

Display messages
202
Display messages
¯
dEF Chk dEF Chk
Possible causes/consequences and M M Solutions
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:
There are no lane markings present.
R
The camera's functionality is impaired due to heavy rain, snow
R
or fog.
The camera cannot recognize the road markings:
R
It is too dark.
-
The lane markings are worn or are covered, for example, by
-
dirt or snow.
The windshield is dirty in the camera's field of vision.
R
Stop the vehicle paying attention to road and traffic conditions.
X
Secure the vehicle to prevent it from rolling away
X
( page 151).
Y
Clean the windshield (
X
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.
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 16 times.
Have the DEF tank cleaned and refilled at a qualified specialist
X
workshop as soon as possible.
page 269), particularly in the camera's
Y