Display messages
Possible causes/consequences and M Solutions
Highbeam Assist
inoperative
Highbeam Assist is faulty.
X
Visit a qualified specialist workshop.
Highbeam Assist tem‐
porarily unavaila‐
ble
Highbeam Assist is deactivated and temporarily inoperative.
Possible causes are:
R
The camera's functionality is impaired due to heavy rain, snow or
fog.
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 130).
X
Clean the windshield (Y page 235), particularly in the camera's
field of vision.
If the malfunction has been rectified, the Highbeam Assist
available again message appears.
Engine
Display messages
Possible causes/consequences and M Solutions
Exhaust Filter:
Drive at high
engine speed. See
Oper. Manual
The automatic regeneration of the diesel particle filter is not sufficient
or has malfunctioned.
X
Drive at an engine speed of above 2000 rpm until the display mes-
sage disappears.
If the display message does not go out after approximately
20 minutes, have the malfunction rectified immediately at a quali-
fied specialist workshop.
Check Diesel
Exhaust Fluid See
Operator's Manual
The DEF supply has dropped below 1.5 US gal (5.5 l).
X
Add DEF supply (Y page 129).
The display message only disappears when the vehicle is stationary,
at the latest after 20 seconds as soon as you switch on the ignition
or start the engine after refueling.
å
XX starts remaining
Three short warning tones also sound.
After the message appears for the first time, the remaining DEF supply
will last for approximately 1200 miles (1900 km). The engine can then
only be started another 16 times.
The number of remaining engine starts xx
(16 to 0) is shown in the
message every time the engine is started.
X
Add at least 1.5 US gal (5.5 l) of DEF (Y page 129).
Display messages
187
On-board computer and displays
Z