Mercedes-Benz B-Class hatchback 2022 Owner's Manual page 497

494 Display messages and warning/indicator lamps
Engine
Warning/indicator lamp
ÿ
Coolant warning lamp (red)
Possible causes/consequences and
* The red coolant warning lamp is lit while the engine is running.
Possible causes:
The temperature sensor is malfunctioning
R
The coolant level is too low
R
The air supply to the radiator is obstructed
R
The radiator fan is faulty
R
The engine coolant pump is faulty
R
If there is an additional warning tone, the coolant temperature has exceeded 120°C.
& WARNING Risk of burns when opening the bonnet
If you open the bonnet in the event of an overheated engine or fire in the engine compartment, the following situa-
tions may occur:
You may come into contact with hot gases.
R
You may come into contact with other escaping hot operating fluids.
R
Before opening the bonnet, allow the engine to cool down.
#
In the event of a fire in the engine compartment, keep the bonnet closed and call the fire service.
#
Stop immediately in accordance with the traffic conditions and switch off the vehicle. Do not continue driving.
#
Solutions
M