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Warning/indicator lamp
Possible causes/consequences and
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* The yellow coolant warning lamp is lit while the engine is running.
Possible causes are:
R
Coolant warning lamp (yel-
R
low)
R
#
* The yellow Check Engine warning lamp is lit while the engine is running.
;
A malfunction has occurred in the engine, the exhaust system or the fuel system.
The emissions limit value may have been exceeded and the engine may be running in emergency operation mode.
Check Engine warning lamp
In some states, legal requirements stipulate that you must immediately consult a qualified specialist workshop as soon
as the yellow Check Engine warning lamp lights up.
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* The red electrical malfunction warning lamp is lit.
There is a malfunction in the electrics.
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Electrical malfunction warn-
ing lamp
Solutions
M
The temperature sensor is malfunctioning
The charge air, transmission oil or battery cooling is faulty
The radiator shutters are blocked or defective
Avoiding high loads on the engine, drive to the nearest qualified specialist workshop.
Have the vehicle checked as soon as possible at a qualified specialist workshop.
Note the messages on the driver's display.
Display messages and warning/indicator lamps 439
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