Mercedes-Benz C-Class Wagon Owner's Manual page 546

Warning/indicator lamp
J
Brake system warning lamp
(yellow)
J
Brake system warning lamp
(red)
Possible causes/consequences and
* The yellow brake system warning lamp is lit while the engine 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.
#
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.
#
* The red brake system warning lamp is lit while the engine 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.
#
& WARNING Risk of accident and injury if brake force boosting is malfunctioning
If brake force boosting is malfunctioning, increased brake pedal force may be necessary for braking. The braking
characteristics may be impaired. The braking distance can increase in emergency braking situations.
Display messages and warning/indicator lamps 543
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