Mercedes-Benz S-Class 2022 Owner's Manual page 596

Warning/indicator lamp
J
Brake system warning lamp
(yellow)
J
Brake system warning lamp
(red)
Possible causes/consequences and
* The yellow brake warning lamp is lit while the vehicle is running.
& WARNING Risk of an accident due to a brake system malfunction
If the brake system is malfunctioning, braking characteristics may be impaired.
Drive on carefully.
#
Have the brake system checked immediately at a qualified specialist workshop.
#
The Hill Start Assist may be malfunctioning.
Adjust your speed and drive on carefully, leaving a suitable distance to the vehicle in front.
#
If the driver's display shows a display message, observe it.
#
Consult a qualified 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 affected.
R
There is insufficient brake fluid in the brake fluid reservoir.
R
Note the messages on the driver's display.
#
Solutions
M
Display messages and warning/indicator lamps 593