Mercedes-Benz A-Class 2020 Operator's Manual page 398

396 Display messages and warning/indicator lamps
Warning/indicator lamp Possible causes/consequences and
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The red electrical malfunction warning lamp is lit.
* There is a malfunction in the electrics.
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Electrical malfunction warn‐
ing lamp
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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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Fuel reserve warning lamp
æ
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.
Fuel reserve warning lamp
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If the fuel filler cap has already been closed correctly:
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The red coolant warning lamp is lit while the engine is running.
*Possible causes are:
R
Coolant warning lamp
M M
Observe the messages on the multifunction display.
Refuel.
Close the fuel filler cap.
Visit a qualified specialist workshop.
The temperature sensor is malfunctioning
Solutions