Mercedes-Benz S-Class, Operator'S Manual

Page: 539 / 586

Warning/indicator lamp
Possible causes/consequences and M M 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 fault warning lamp is lit.
There is a fault in the electrics.
#
Note the messages on the driver's display.
8
Fuel reserve warning lamp
flashes
* The yellow fuel reserve warning lamp lights up while you are driving.
There has been pressure loss in the fuel system. The fuel filler cap is not closed correctly or the fuel system is leak‐
ing.
#
Close the fuel filler cap.
If the fuel filler cap has already been closed correctly:
#
Consult a qualified specialist workshop.
Display messages and warning/indicator lamps 537