Mercedes-Benz 2006 R 350 Operator's Manual page 406

Problem
;
(USA only) The red brake warning lamp
comes on while driving and
3
(Canada only)
you hear a warning sound.
The red brake warning lamp
comes on while driving.
Warning!
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.
Possible cause/conse-
quence
You are driving with the
parking brake set.
The ESP
malfunctioning.
The driving safety systems
may not be available.
There is insufficient brake fluid
in the reservoir.
G
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.
Suggested solution
Release the parking brake
( page 56).
®
control unit may be Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the
multifunction display ( page 416).
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.
!
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.
Practical hints
What to do if ...
405