Mercedes-Benz Sprinter Operating Instructions Manual page 225

Indicator and warning lamps in the instrument cluster
Problem
b When towing a
trailer: the red
brake system
indicator lamp is
lit while the
engine is run-
ning.
Additionally, a
warning tone
sounds.
: The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running.
: The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running.
Possible causes/consequences and M Solutions
G
WARNING
The brake force booster in the trailer is faulty.
The driving and braking characteristics of your vehicle could
change. There is a risk of the trailer overbraking and of you losing
control over the truck/trailer combination.
There is a risk of an accident.
Vehicles with steering wheel buttons: also observe the mes-
X
sages in the display (
Y
Stop the vehicle as soon as possible, paying attention to road
X
and traffic conditions.
Do not drive on.
X
Consult a qualified specialist workshop.
X
ASR has been deactivated due to a malfunction.
The engine power output may be reduced.
G
WARNING
The driven wheels can spin when accelerating.
There is an increased risk of skidding and accidents.
Drive on with care.
X
Consult a qualified specialist workshop as soon as possible.
X
BAS has been deactivated due to a malfunction.
G
WARNING
The brake system continues to function normally, but without
electronic support.
The braking distance can increase in emergency braking situa-
tions.
There is a risk of an accident.
Drive on with care.
X
Visit a qualified specialist workshop immediately.
X
page 201).
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