Mercedes-Benz S-Class 2012 - Manual (Page 410)

Display messages Possible causes/consequences and M Solutions
¸·
Replace Air Filter
Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X Visit a qualified specialist workshop.
!
Check 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
Oper. Manual
The DEF tank is empty.
X Have the DEF tank filled as soon as possible at a qualified
specialist workshop (
Y page 321).
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 321)
Driving systems
Display messages Possible causes/consequences and M Solutions
À
Attention Assist:
Pause!
Based on specific criteria, ATTENTION ASSIST 21 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 21 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.
21 Not available on hybrid vehicles.
408
Display messages
On-board computer and displays