Operation Manual

Warning/
indicator
lamp
N Signal type
Possible causes/consequences and M
Solutions
$J
N $ (USA only) or J (Canada only): the red brake system warning lamp is
lit 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 189).
X
Do not add brake fluid. Adding more will not correct the malfunction.
X
Consult a qualified specialist workshop.
X
Observe the additional display messages in the multifunction display.
$
N USA only: the red brake system warning lamp is lit while the engine is running.
The multifunction display also shows a display message with the # symbol.
The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop.
!
N The yellow ABS warning lamp is lit while the engine is running.
ABS (Anti-lock Braking System) is deactivated due to a malfunction. Therefore BAS
(Brake Assist), BAS PLUS with Cross-Traffic Assist, COLLISION PREVENTION
ASSIST PLUS, ESP
®
(Electronic Stability Program), PRE‑SAFE
®
, PRE‑SAFE
®
PLUS,
PRE‑SAFE
®
Brake, the HOLD function, Hill Start Assist, Crosswind Assist, STEER
CONTROL, Active Lane Keeping Assist and Active Blind Spot Assist are also deac-
tivated.
ATTENTION ASSIST is deactivated.
G
WARNING
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 affected. 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 immediately.
If the ABS control unit is faulty, there is also a possibility that other systems, such
as the navigation system or the automatic transmission, will not be available.
316
Warning and indicator lamps in the instrument cluster
On-board computer and displays