Display messages
Possible causes/consequences and
M
Solutions
#
Stop the vehicle as soon as possible, paying attention to
road and traffic conditions. Do not continue driving.
#
Consult a qualified specialist workshop.
#
Do not top up the brake fluid.
#
Stop in a safe location immediately. Do not continue driving!
#
Consult a qualified specialist workshop.
#
Do not top up the brake fluid.
Caution Brakes overhea-
ted Drive carefully
* If the all-wheel drive has been switched on, the brake system can
overheat during extreme off-road use.
#
Decelerate or stop and let the brake system cool down.
Active Brake Assist Func-
tions limited See Own-
er's Manual
* Active Brake Assist is malfunctioning.
#
Visit a qualified specialist workshop.
Active Brake Assist Func-
tions currently limited
See Owner's Manual
* Active Brake Assist is temporarily unavailable.
The ambient conditions are outside the system limits (
/
page 155).
#
Continue driving.
When the ambient conditions are within the system limits, the
system will be available again.
#
If the display message does not go out, stop in a safe location
and re-start the engine.
Radar sensors dirty See
Owner's Manual
* The radar sensor system is malfunctioning. Possible causes:
R
dirt on the sensors
R
heavy precipitation
R
extended country drives without other traffic, e.g. in the desert
Driving systems and driving safety systems may be malfunctioning
or temporarily unavailable.
When the causes have been eliminated, the driving systems and
driving safety systems will be available again.
If the display message does not disappear, proceed as follows:
#
Stop in accordance with the traffic conditions.
#
Clean all sensors (
/
page 288).
#
Re-start the engine.
SOS NOT READY
* The Mercedes-Benz emergency call system is not available.
Possible causes for this include:
R
the ignition is switched off
R
the Mercedes-Benz emergency call system is malfunctioning
#
Switch on the ignition.
If an emergency call is unavailable, a message to this effect will
appear on the multifunction display of the instrument cluster.
#
Visit a qualified specialist workshop.
364 Display messages and warning and indicator lamps