User Manual - Page 511

For 4MATIC. Also, The document are for others Mercedes-Benz models: ARRAY

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Warning/indicator lamp
Possible causes/consequences and M Solutions
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Fuel reserve warning lamp
The yellow fuel reserve warning lamp lights up while the engine is running.
The fuel supply has dropped into the reserve range.
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Refuel.
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Fuel reserve warning lamp
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 leaking.
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Close the fuel filler cap.
If the fuel filler cap has already been closed correctly:
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Visit a qualified specialist workshop.
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Electrical malfunction warn
ing lamp
The red electrical malfunction warning lamp is lit.
There is a malfunction in the electrics.
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Observe the messages on the multifunction display.
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Coolant warning lamp
The red coolant warning lamp is lit while the engine is running.
Possible causes are:
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The temperature sensor is malfunctioning
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The coolant level is too low
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Display messages and warning/indicator lamps
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