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Practical hints
What to do if ...
Problem Possible cause/consequence Suggested solutions
3 (Canada only)
; (USA only)
The red brake warning lamp
comes on while driving and
you hear a warning sound.
You are driving with the parking brake on. ̈ Release the parking brake (୴ page 50).
There is a malfunction in the electrohy-
draulic brake system.
̈ Read and observe messages in the multi-
function display (
୴ page 307).
3 (Canada only)
; (USA only)
The red brake warning lamp
comes on while driving.
There is insufficient brake fluid in the
reservoir.
̈ Risk of accident! Carefully stop the vehicle in
a safe location and notify an authorized
Mercedes-Benz Center. Do not add brake
fluid! This will not solve the problem.
Warning! G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake sys-
tem.
Overfilling the brake fluid reservoir can re-
sult in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You
can be seriously burned.
!
If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.