Mercedes-Benz S-Class Saloon 2021, Owner'S Manual

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