Mercedes-Benz GL-Class: Engine - Warning and indicator lamps in the instrument cluster - On-board computer and displays - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Engine

Display messages

(Canada only) (USA only)
The yellow Check (Canada only)
The yellow Check Engine warning lamp lights up while the ignition is switched on with the engine running.

Possible causes/consequences and Solutions

There may be a malfunction, for example:
in the engine management
in the fuel injection system
in the exhaust system
in the ignition system (for vehicles with a gasoline engine)
in the fuel system
The emission limit values may be exceeded and the engine may be running in emergency mode.
Have the vehicle checked as soon as possible at a qualified specialist workshop.
qualified specialist workshop as soon as the yellow Check In some states, you are required by law to immediately visit a qualified specialist workshop as soon as the yellow Check Engine warning lamp lights up. If in doubt, check whether such legal regulations apply in the state/province in which you are currently driving.
Vehicles with a diesel engine: the fuel tank has been run dry.
Start the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency running mode is canceled. The vehicle need not be checked.

Display messages

The yellow reserve fuel warning lamp flashes while the vehicle is in motion.

In addition, the (Canada only) yellow (USA only)/ Check Engine warning (Canada only) yellow Check Engine warning lamp may light up.

Possible causes/consequences and Solutions

The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking.
Observe the additional display messages in the multifunction display.
Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed: close the fuel filler cap.
If the fuel filler cap is closed: visit a qualified specialist workshop.

Display messages

The yellow reserve fuel warning lamp lights up while the engine is running.

Possible causes/consequences and Solutions

The fuel level has dropped into the reserve range.
Refuel at the nearest gas station.

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