Mercedes-Benz 2013 GL X166, Operator'S Manual

Page: 319 / 448

Safety systems
Problem Possible causes/consequences and
M
Solutions
$
(USA only)
J
(Canada only)
The red brake system
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
G
WARNING
The brake boosting effect is malfunctioning and the braking
characteristics may be affected.
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 178).
X
Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display.
$
(USA only)
J
(Canada only)
The red brake system
warning lamp comes on
while the engine is
running. 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 178).
X
Do not add brake fluid. Topping up will not remedy the
malfunction.
X
Consult a qualified specialist workshop.
X
Observe the additional display messages in the multifunction
display.
Warning and indicator lamps in the instrument cluster
317
On-board computer and displays
Z