Mercedes-Benz S 450 2020, Operator'S Manual

Page: 547 / 602

Engine
Warning/indicator lamp Possible causes/consequences and M M Solutions
ÿ
Coolant warning lamp
The red coolant warning lamp is lit while the engine is running.
*Possible causes:
R
The temperature sensor is malfunctioning
R
Coolant level too low
R
The air supply to the radiator is obstructed
R
The radiator fan is faulty
If there is an additional warning tone, the coolant temperature has exceeded the maximum permissible temperature.
&
WARNING Danger of burns when opening the hood
If you open the hood 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 hood, allow the engine to cool down.
#
In the event of a fire in the engine compartment, keep the hood closed and call the fire service.
#
Stop the vehicle immediately in accordance with the traffic conditions and switch off the engine. Do not continue
driving under any circumstances.
#
Note the messages on the multifunction display.
If the coolant temperature display is at the lower end of the temperature scale:
Display messages and warning/indicator lamps 545