Mercedes-Benz S-Class 2013 Owners Manual - Manual (Page 414)

Display messages Possible causes/consequences and M Solutions
!
Clean fuel filter
Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop.
Ø
Check additive See
Operator's Manual
The DEF tank is empty.
X Have the DEF tank filled as soon as possible at a qualified
specialist workshop (
Y
page 325).
Ø
Remaining starts:
16
The DEF level has fallen to a minimum.
X Have the DEF tank filled immediately at a qualified specialist
workshop (
Y
page 325).
Driving systems
Display messages Possible causes/consequences and M Solutions
À
Attention Assist:
Drowsiness
detected
Based on specific criteria, ATTENTION ASSIST 20 has determined
that the driver is tired or paying less attention. A warning tone also
sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest.
À
Attention Assist
Inoperative
ATTENTION ASSIST 20 has failed.
X Visit a qualified specialist workshop.
Á
Night View Assist
Inoperative
Night View Assist Plus is defective.
X Visit a qualified specialist workshop.
Á
Night View Assist
Currently
Unavailable
The temperature of the camera is too high.
X Wait until you see the Night View Assist Available
Again display message.
You can also:
X Fold the camera cover down (
Y
page 475).
X
Adjust the air distribution of the automatic air conditioning
upwards.
20 Not available on hybrid vehicles.
412
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On-boar
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compu
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