Mercedes-Benz S-Class Cabriolet 2019 Owner's Manual page 511

508 Display messages and warning/indicator lamps
Warning/indicator lamp
;
Engine diagnosis warning
lamp
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Electrical fault warning
lamp
Possible causes/consequences and
Consult a qualified specialist workshop.
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or
Exit the vehicle and keep a safe distance from it until the engine has cooled down.
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Check the coolant level (
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Make sure that the air supply to the radiator is not impaired.
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Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the
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coolant temperature display remains below 120 °C.
The yellow engine diagnostics 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.
Have the vehicle checked as soon as possible at a qualified specialist workshop.
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The red electrical fault warning lamp is lit.
* There is a fault in the electrics.
Observe the messages on the multifunction display.
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M M Solutions
page 384).
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