Mercedes-Benz E-Class Coupe 2017 Owner's Manual page 384

Display messages
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Coolant Stop vehicle
Switch engine off
Possible causes/consequences and
* The coolant is too hot.
Stop the vehicle immediately, paying attention to road and traffic conditions, and switch off the engine.
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& 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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Wait until the engine has cooled down.
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Make sure that the air supply to the radiator is not obstructed.
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Avoiding high loads on the engine, drive on to the nearest qualified specialist workshop. In doing so, ensure that
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the coolant temperature display remains below 120 °C.
Display messages and warning/indicator lamps 381
M M Solutions