Engine
Problem
Possible causes/consequences and
M
Solutions
;
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.
There may be a malfunction in
R
the fuel management system
R
the ignition system
R
the emission control system
R
systems which affect emissions
Such malfunctions may result in excessive emissions values and
may switch the engine to limp-home (emergency operation) mode.
X
Have the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i
Some states may by law require you to visit a workshop as
soon as the engine malfunction indicator lamp comes on. Check
local requirements.
;
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.
A loss of pressure has been detected in the fuel system. The fuel
cap may not be closed properly or the fuel system may be leaky.
X
Check the fuel cap (
Y
page 222).
X
If it is not closed properly: Close the fuel cap.
X
If it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center.
?
The red coolant
temperature
warning lamp
comes on when
the engine is
running.
There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently, there is a leak in the
cooling system.
If the coolant level is correct, the electric radiator fan may be
broken.
X
Immediately add coolant to prevent engine from overheating
(
Y
page 227).
X
Have the cooling system checked.
X
If the coolant temperature is below 248‡ (120†), you can
continue driving to the nearest authorized Mercedes-Benz
Center.
X
Avoid high engine loads (e.g. driving uphill) and stop-and-go
driving.
What to do if …
305
Practical hints
204_AKB; 5; 23, en-US
d2ureepe,
Version: 2.11.8.1
2009-07-16T17:54:06+02:00 - Seite 305
Z
Summary of Contents for 2010 C 250
Page 1: ...C Class Operator s Manual...
Page 4: ......
Page 332: ...330...
Page 361: ...359...
Page 362: ...360...
Page 364: ...Order no 6515 0712 13 Part no 204 584 5381 Edition B 2010 2045845381z 2045845381...