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Practical hints
What to do if …
Problem Possible cause/conse-
quence
Suggested solution
; (USA only)
3 (Canada only)
The red brake warning lamp
comes on while driving and
you hear a warning sound.
You are driving with the
parking brake set.
̈ Release the parking brake
(
୴ page 60).
There is insufficient brake fluid
in the reservoir.
̈ Risk of accident! Carefully stop the
vehicle in a safe location or as soon it
is safe to do so.
̈ Apply the parking brake (୴ page 68).
̈ Notify an authorized Mercedes-Benz
Light Truck 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 system. Overfilling the brake fluid res-
ervoir can result 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.