Mercedes-Benz Black Series Operator's Manual page 183

Warning and indicator lamps in the instrument cluster
Engine
Problem
; The yellow
Check Engine
warning lamp
lights up while
the engine is
running.
; The yellow
Check Engine
warning lamp
lights up while
the engine is
running. The
smoothness of
the gear change
is restricted.
ç The red engine
oil temperature
warning lamp
comes on while
the engine is
running. A
warning tone
also sounds.
Possible causes/consequences and M Solutions
There may be a malfunction, for example:
in the engine management
R
in the fuel injection system
R
in the exhaust system
R
in the ignition system
R
in the fuel system
R
The emission limit values may be exceeded and the engine may
be in emergency mode.
Have the vehicle checked as soon as possible at a qualified
X
specialist workshop.
i
In some states, you must visit a qualified specialist workshop
as soon as the yellow check engine warning lamp lights up. This
is due to the legal requirements in effect in these states. If in
doubt, check whether such legal regulations apply in the state
in which you are currently driving.
The sub geartrain with the odd gears has failed. The transmission
is in emergency mode.
Have the vehicle checked as soon as possible at a qualified
X
specialist workshop.
The engine oil temperature has exceeded 284 ‡ (140 †).
The engine is not being cooled sufficiently and may be damaged.
Pull over and stop the vehicle safely and switch off the engine,
X
paying attention to road and traffic conditions.
Allow the engine to cool down.
X
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Z