Mercedes-Benz GLB 2023, Operator'S Manual

Page: 420 / 462

Warning/indicator lamp Possible causes/consequences and
M
Solutions
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Note the messages on the instrument display.
If the coolant temperature display is at the lower end of the temperature scale:
#
Consult a qualified specialist workshop.
If the coolant temperature display is at the upper end of the temperature scale:
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Exit the vehicle and keep a safe distance from it until the engine has cooled down.
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Check the coolant level (
/
page 287).
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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 to the nearest qualified specialist workshop. In doing so, ensure that the
coolant temperature display remains below the red area.
ÿ
Coolant warning lamp (yel-
low)
* The yellow coolant warning lamp is lit while the engine is running.
Possible causes are:
R
The temperature sensor is malfunctioning
R
The charge air, transmission oil or battery cooling is faulty
R
The radiator shutters are blocked or defective
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Avoiding high loads on the engine, drive to the nearest qualified specialist workshop.
418 Display messages and warning/indicator lamps