Mercedes-Benz S-Class Saloon 2021 Owner's Manual page 575

572 Display messages and warning/indicator lamps
572
W W ar arning/indicat ning/indicator lamp or lamp
J
Brake system warning lamp
(yellow)
J
Brake system warning lamp
(red)
Possible causes/conseq P ossible causes/consequences and uences and
* The yellow brake warning lamp is lit while the vehicle is running.
& W W ARNING
ARNING Risk of an accident due to a brake system malfunction
If the brake system is malfunctioning, braking characteristics may be impaired.
Drive on carefully.
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Have the brake system checked immediately at a quali ed specialist workshop.
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The hill start assist may be malfunctioning.
Adjust your speed and drive on carefully, leaving a suitable distance to the vehicle in front.
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If the driver display shows a display message, observe it.
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Consult a quali ed specialist workshop.
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* The red brake warning lamp is lit while the vehicle is running.
Possible causes:
The brake force boosting is malfunctioning and the braking characteristics may be a ected.
R
There is insu cient brake uid in the brake uid reservoir.
R
Note the messages on the driver display.
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M M Solutions Solutions