The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction in
the system, it may not be possible to apply the
released parking brake. X
If this is the case, only park the vehicle on
level ground and secure it to prevent it rolling
away. X
Shift the automatic transmission to position
P .
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact a
qualified specialist workshop.
i The electric parking brake performs a func-
tion test at regular intervals while the engine
is switched off. The sounds that can be heard
while this is occurring are normal.
Applying or releasing manually
X
To engage: push handle C .
When the electric parking brake is engaged,
the I (USA only) or $ (Canada only)
red indicator lamp lights up in the instrument
cluster.
i The electric parking brake can also be
applied when the SmartKey is removed. X
To release: pull handle C .
The red I (USA only) or $ (Canada
only) indicator lamp in the instrument cluster
goes out.
i The electric parking brake can only be
released: R
if the SmartKey is in position 1 in the igni-
tion lock ( Y
page 145) orR
if the ignition was switched on using the
Start/Stop button To ensure that you do not roll backwards when
pulling away on an uphill slope, engage the elec-
tric parking brake ( Y
page 149).
Applying automatically The electric parking brake is automatically
applied when the transmission is in position P
and: R
the engine is switched off or R
the driver is not wearing a seat belt and the
driver's door is opened.
To prevent the electric parking brake from being
automatically applied, pull handle C .
The electric parking brake is also engaged auto-
matically if: R
DISTRONIC PLUS brings the vehicle to a
standstill or R
the HOLD function is keeping the vehicle sta-
tionary R
Active Parking Assist is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled: R
the engine is switched off R
the driver is not wearing a seat belt and the
driver's door is opened R
there is a system malfunction R
the power supply is insufficient R
the vehicle is stationary for a lengthy period
The red I (USA only) or $ (Canada only)
indicator lamp in the instrument cluster lights
up.
The electric parking brake is not automatically
engaged if the engine is switched off by the ECO
start/stop function.
Releasing automatically The electric parking brake is released automat-
ically when all of the following conditions are
fulfilled: R
the engine is running. R
the transmission is in position D or R .R
the seat belt has been fastened. R
you depress the accelerator pedal.
If the transmission is in position R , the trunk lid
must be closed.180
Parking
Driving and parking
