Mercedes-Benz S 450 2020, Operator'S Manual

Page: 548 / 602

Warning/indicator lamp
Possible causes/consequences and M M Solutions
#
Consult a qualified specialist workshop.
or
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Exit the vehicle and keep a safe distance from it until the engine has cooled down.
#
Check the coolant level (
/
page 413).
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Make sure that the air supply to the radiator is not impaired.
#
Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the
coolant temperature display remains below the red area.
;
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.
546 Display messages and warning/indicator lamps