Mercedes-Benz M-Class Owner's Manual page 272

Driving systems
Display messages
À
Attention Assist:
Drowsiness detec‐
ted
À
Attention Assist
inoperative
Á
Please reduce speed
Á
Compressor is cool‐
ing
Á
Malfunction
Possible causes/consequences and M Solutions
Based on specific criteria, ATTENTION ASSIST has determined that
the driver is tired or paying less attention. A warning tone also
sounds.
If necessary, take a break.
X
During long journeys, take regular breaks in good time so you get
enough rest.
ATTENTION ASSIST has failed.
Visit a qualified specialist workshop.
X
You cannot change the vehicle level. Possible causes:
you are driving too fast for the selected vehicle level.
R
you are towing a trailer.
R
the trailer-coupling socket is being used, e.g. for a bicycle rack.
R
Drive more slowly and then select the desired vehicle level
X
again.
Vehicles with the ON&OFFROAD package (
R
Vehicles with the AIRMATIC package (
R
Observe the notes on towing a trailer (
X
You have selected a higher vehicle level. The compressor first
needs to cool down because of frequent level changes.
Drive in a manner appropriate for the current vehicle level.
X
Make sure that there is sufficient ground clearance.
X
Allow the compressor to cool down.
X
When the compressor has cooled down, the display message
disappears. The vehicle then continues rising to the selected
level.
AIRMATIC is faulty.
Drive as appropriate for the current vehicle level, but do not
X
exceed 80 km/h.
Make sure that there is sufficient ground clearance.
X
Have the vehicle checked at a qualified specialist workshop.
X
The Active Curve System is faulty. The vehicle's handling charac-
teristics may be affected.
Do not exceed a maximum speed of 80 km/h.
X
Have the vehicle checked at a qualified specialist workshop.
X
Display messages
page 183)
Y
page 189)
Y
page 226).
Y
269
Z