User Manual - Page 496

For 2020 C-CLASS.

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Engine
Warning/indicator lamp
Possible causes/consequences and
MM Solutions
;
Engine diagnosis warning
lamp
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 emission limit values may be exceeded and the engine may be in emergency mode.
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.
#
Have the vehicle checked as soon as possible at a qualified specialist workshop.
#
Electrical malfunction warn‐
ing lamp
The red electrical malfunction warning lamp is lit.
*There is a malfunction in the electrics.
#
Observe the messages on the multifunction display.
8
Fuel reserve warning lamp
The yellow fuel reserve warning lamp is lit while the engine is running.
*The fuel supply has dropped into the reserve range.
#
Refuel.
494
Display messages and warning/indicator lamps
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