Mercedes-Benz CL-Class 2013 Owners Manual - Manual (Page 389)

Safety systems
Problem Possible causes/consequences and M Solutions
$ (USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Apply the electric parking brake.
X Consult a qualified specialist workshop immediately.
X Observe the additional display messages in the multifunction
display.
Do not add brake fluid. This does not correct the malfunction.
Warning and indicator lamps in the instrument cluster
387
On-board
computer
and
displays
Z