Filter
Top Products
405
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 56).
The ESP
®
control unit may be
malfunctioning.
The driving safety systems
may not be available.
̈ Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
̈ Read and observe messages in the
multifunction display (
୴ page 416).
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 or as soon as
it is safe to do so and notify an autho-
rized Mercedes-Benz Light Truck Cen-
ter. 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.