Mercedes-Benz C-CLASS CABRIOLET Operator's Manual page 146

Parking
144
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.
If this is the case, only park the vehicle on
X
level ground and secure it to prevent it rolling
away.
Shift the transmission to position j.
X
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.
The electric parking brake performs a function
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
To apply: push handle :.
X
When the electric parking brake is applied,
the red F (USA only) or ! (Canada
only) indicator lamp lights up in the instru-
ment cluster.
The electric parking brake can also be applied
when the SmartKey is removed.
To release: pull handle :.
X
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument cluster
goes out.
The electric parking brake can only be released:
if the SmartKey is in position 1 or 2 in the
R
ignition lock (
if the ignition was switched on using the
R
Start/Stop button
page 122) or
Y
Applying automatically
The electric parking brake is automatically
applied when the transmission is in position j
and:
the engine is switched off or
R
the driver is not wearing a seat belt and the
R
driver's door is opened
To prevent the electric parking brake from being
automatically applied, pull handle :.
The electric parking brake is also engaged auto-
matically if:
DISTRONIC PLUS brings the vehicle to a
R
standstill or
the HOLD function is keeping the vehicle sta-
R
tionary
Active Parking Assist is keeping the vehicle
R
stationary
In addition, at least one of the following condi-
tions must be fulfilled:
the engine is switched off
R
the driver is not wearing a seat belt and the
R
driver's door is opened
there is a system malfunction
R
the power supply is insufficient
R
the vehicle is stationary for a lengthy period
R
The red F (USA only) or ! (Canada only)
indicator lamp in the instrument cluster goes
out.
The electric parking brake is not automatically
engaged if the engine is switched off by the ECO
start/stop function.
Releasing automatically
Your vehicle's electric parking brake is auto-
matically released if all of the following condi-
tions are met:
the seat belt has been fastened.
R
the engine is running.
R
the transmission is in position h or k and
R
you accelerate.
or
you shift from transmission position j to
position h or k. You will need to accelerate
more on steeper gradients.
If the transmission is in position k the trunk lid
must be closed.