Mercedes-Benz E-Class Saloon 2018 Owner's Manual page 517

Warning/indicator lamp
Possible causes/consequences and
? The red coolant warning lamp is lit while the engine is running.
Possible causes:
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Coolant warning lamp
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If there is an additional warning tone, the coolant temperature has exceeded 120 °C.
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If the coolant temperature display is at the lower end of the temperature scale:
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The temperature sensor is malfunctioning
The coolant level is too low
The air supply to the radiator is obstructed
The radiator fan is faulty
& WARNING Danger of burns when opening the bonnet
If you open the engine bonnet when the engine has overheated or during a fire in the engine compartment, you
could come into contact with hot gases or other escaping operating fluids.
Before opening the bonnet, allow the engine to cool down.
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In the event of a fire in the engine compartment, keep the engine bonnet closed and call the fire service.
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Stop the vehicle immediately, paying attention to road and traffic conditions, and switch off the engine. Do not con‐
tinue driving.
Observe the messages on the multifunction display.
consult a qualified specialist workshop
Nur für internen Gebrauch / For internal use only
Display messages and warning/indicator lamps 515
Solutions
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