Important Safety Notes - Mercedes-Benz Citan 2015 Operating Instructions Manual

Driving safety systems
48
Braking
X
If ABS intervenes: keep the brake pedal
firmly depressed until the braking situation
has passed.
X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsating in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions and functions as a
reminder to take extra care while driving.
ASR (acceleration skid control)

Important safety notes

i Note the section on 'Important safety notes'
Y
( page 47).
ASR improves traction, i.e. the transfer of power
from the tyres to the road surface, for a sus-
tained period and, thereby, also improves the
driving stability of the vehicle. ASR assists you
when pulling away and accelerating, especially
on smooth and slippery surfaces.
ASR brakes the individual drive wheels and lim-
its the engine torque. This prevents the drive
wheels from spinning.
If traction on the road surface is not sufficient,
even ASR will not allow you to pull away without
difficulty. This also applies when tyres, load and
gradient are taken into account.
If ASR malfunctions, engine power output may
be reduced.
ASR can neither reduce the risk of an accident
nor suspend the laws of physics if the driver
does not pay attention when pulling away or
accelerating. ASR is only an aid. Always adapt
your driving style to suit the prevailing road and
weather conditions.
Activating/deactivating ASR
G
WARNING
If deactivated, ASR will not attempt to stabi-
lise the vehicle during pulling away and accel-
eration. There is an increased risk of skidding
and of an accident.
Only deactivate ASR in the situations descri-
bed in the following.
It may be best to deactivate ASR briefly in the
following situations:
if snow chains are being used
R
in deep snow
R
on sand or gravel
R
! If the brake system is used for prolonged
periods because ESP intervenes frequently, it
can overheat or even be damaged. Therefore,
only deactivate ASR briefly.
If you deactivate ASR:
engine torque is not limited and the drive
R
wheels are able to spin. The spinning wheels
produce a cutting effect which improves trac-
tion.
traction control still intervenes by braking if
R
one drive wheel reaches its grip limit, e.g. if
the surface under one side of the vehicle is
slippery. In this situation, the wheel is then
braked to increase traction.
If you deactivate ASR, ESP
stabilise the vehicle. When ESP
and the ÷ warning lamp in the instrument
cluster is flashing, leave ASR on. In this case,
only depress the accelerator pedal as far as
required when pulling away.
X
To deactivate: press button :.
The å warning lamp in the instrument
cluster lights up. In addition, the
surface
message is shown in the instrument
cluster.
i If ASR is not switched off, the
face
message is shown in the instrument
cluster.
ASR will switch on again automatically:
if you are driving faster than 50 km/h or
R
the vehicle handling becomes unstable.
R
ASR is automatically activated when the engine
is started.
®
will still intervene to
®
is intervening
Slippery
Normal sur‐