Mercedes-Benz B-Class Electric Drive W245, Operator'S Manual

Page: 220 / 314

Safety systems
Problem
Possible causes/consequences and M M Solutions
$ (USA only)
J (Canada only)
The red brake system
warning lamp is lit while
the drive system is run-
ning. 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
Secure the vehicle against rolling away (
Y
page 300).
X
Do not add brake fluid. Adding more will not remedy the mal-
function.
X
Consult a qualified specialist workshop.
X
Observe the additional display messages in the multifunction
display.
! é
The yellow ABS and
RBS warning lamps are
on while the drive sys-
tem is running.
ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist), COLLISION PREVENTION
ASSIST, ESP
®
(Electronic Stability Program), RBS, the HOLD func-
tion and hill start assist are also deactivated, for example.
ATTENTION ASSIST is deactivated.
G WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make
an additional effort to apply the brake yourself, the braking effect
may not be sufficient. If necessary, counteract the reduced regen-
erative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Observe the additional display messages in the multifunction
display.
X
Drive on carefully.
X
Visit a qualified specialist workshop.
If the ABS control unit is malfunctioning, other systems may also
not be available, e.g. the navigation system.
218
Warning and indicator lamps in the instrument cluster
On-board
computer
and
display
s