Page 39 of 329

36 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Central locking switch
1Locking
2Unl ock ing
The central locking switch is located in the center
console.
The doors and trunk can only be locked with the central
locking switch, if both doors are closed.
If the vehicle was previously locked with the central
locking switch, while in the selective remote control
mode, only the door opened from the inside is unlocked.If the vehicle was previously locked with the central
locking switch, while in the global remote control mode,
the complete vehicle is unlocked when a door is opened
from the inside.
Notes:
If the vehicle was previously locked with the remote
control, the doors and trunk cannot be unlocked with
the central locking switch.
If the vehicle has previously been locked from the
outside, opening a door with the inside door handle will
trigger the alarm. To cancel the alarm, insert the
electronic key in the steering lock or press buttonŒ
or‹ on the electronic main key.
The fuel filler flap cannot be locked or unlocked with
the central locking switch.
Wa r n i n g !
When leaving the vehicle always remove the
electronic key from the steering lock, and lock your
vehicle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Unsupervised use of vehicle equipment may cause
serious personal injury.
Page 40 of 329

37 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Automatic central locking
The central locking switch also operates the automatic
central locking.
Wit h th e automa tic central locking system activated, t he
doors and trunk are locked at vehicle speeds of approx.
9 mph (15 km/h) or more. The fuel filler f lap remains
unlocked.
To a ctiva te:
With electronic key in steering lock position 2 hold
upper portion of switch (1) for a minimum of 5 seconds.
To dea cti vate :
With electronic key in steering lock position 2 hold
lower portion of switch (2) for a minimum of 5 seconds.
Notes:
If doors are unlocked with the central locking switch
after activating the automatic central locking, and
neither door is opened, then the doors remain unlocked
even at vehicle speeds of approx. 9 mph (15 km/h) or
more.If a door is opened from the inside at speeds of approx.
9 mph (15 km/h) or less with the automatic central
locking activated, the door will again be automatically
locked at speeds of approx. 9 mph (15 km/h) or more.
Important!
When towing the vehicle, or with the vehicle on a
dynamometer test stand, please, note the following:
With the automatic central locking activated and the
electronic key in steering lock position 2, the vehicle
doors will lock if the left front wheel as well as the right
rear wheel spin at vehicle speeds of approx. 9 mph
(15 km/h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking.
Emergency unlocking in case of accident
The doors unlock automatically a short time after a
strong deceleration is detected, such as in a collision
(this is intended to aid rescue and exit).
Driv ing on rou gh road s m ay cau se t he vehicle to u nl ock.
If necessary, the vehicle can be locked again with the
central locking switch, see page 36.
Page 41 of 329
38 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Trunk
When the trunk is separately locked, it remains locked
when centrally unlocking the vehicle.
To deny any unauthorized person access to the trunk,
lock it separately with the mechanical key. Leave only
the electronic main key less its mechanical key with the
vehicle.
Notes:
The mechanical key does not operate the central locking
system or antitheft alarm system.
W hen unlocking th e tru nk wit h th e mecha nica l key, th e
exterior lamps will flash and the alarm will sound.
To cancel the alarm, insert the electronic key in the
steering lock or press buttonŒ or‹ on the
electronic main key.0Neutral position – push to open (arrow)
1Unlocking
2Separate locking of trunk – remove mechanical key
in this position.
Page 42 of 329
39 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
In case of a malfunction in the central locking system
the trunk can be unlocked individually.
To unlock and open the trunk lid, turn mechanical key
to position 1, hold and push to open.
If the fuel filler f lap cannot be opened, see page 287.
Important!
Do not place mechanical key inside trunk, since trunk is
locked when the lid is closed if the vehicle has been
previously centra lly locked.
Lower trunk l id using ha nd le (1) and c lose it with ha nd s
placed flat on trunk lid. Please remember to keep your
fingers out of the space between the lid and the vehicle.
P88.50-2009-26
1
Page 43 of 329
40 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Trunk lid release switch
The switch is located on the center console.A minimum height clearance of 5.9 ft. (1.8 m) is
required to open the trunk lid.
To open the trunk, the vehicle must be at standstill. Pull
up on switch until trunk lid is open.
The indicator lamp in the switch remains on with trunk
lid open.
Notes:
The trunk can also be opened by using the remote
control. Press Š button.
The trunk lid cannot be opened by the switch or the
remote control when previously locked separately with
the mechanical key. To open, see page 38.
The trunk lid cannot be opened with the trunk lid
release switch when the vehicle was previously locked
with the remote control. To unlock vehicle with the
remote control, see page 28.
Page 44 of 329
41 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Trunk lid emergency release
The emergency release button (1) is located in the trunk
lid.
Briefly press emergency release button (1).
All doors, the fuel filler flap, and the trunk unlock; and
the trunk lid opens.Note:
The emergency release button (1) only unlocks and
opens the trunk while the vehicle is standing.
Important!
The emergency trunk lid release button (1) does not
open the trunk lid, if:
•the vehicle battery is discharged or disconnected,
•the trunk lid was previously locked separately with
the mechanical key, see page 38.
Illumination of the emergency release button (1):
The button will blink for 30 minutes after opening the
trunk.
The button will blink for 60 minutes after closing the
trunk.
1
Page 46 of 329

43 Antitheft alarm system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index The alarm will last approximately 3 minutes in form of
flashing exterior lamps. At the same time an alarm will
sound for 30 seconds. The alarm will stay on even if the
activating element (a door, for example) is immediately
closed. The antitheft alarm system is switched off
automatically if the vehicle is unlocked with the
electronic main key. If the alarm stays on for more than
20 seconds, an emergency call is initiated automatically.
See Tele Aid on page 180.Notes:
We recommend that you carry the electronic reserve
key plus mechanical key with you and keep it in a safe
place (e.g. your wallet) so that it is always handy. Never
leave the electronic reserve key in the vehicle.
When you unlock the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To interrupt the alarm, insert the electronic key in the
steering lock or press buttonŒ or‹ on the
electronic main key.
Page 47 of 329

44 Tow-away alarm
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Tow - aw ay al a rm
The switch is located in the center console.
1Press to switch off
2Indicator lamp
Once the alarm system has been armed, the exterior
vehicle lamps will flash and an alarm will sound when
someone attempts to raise the vehicle.The alarm will last approximately 3 minutes in form of
flashing exterior lamps. At the same time an alarm will
sound for 30 seconds. The alarm will stay on even if the
vehicle is immediately lowered. The tow-away alarm
system is switched off automatically if the vehicle is
unlocked with the electronic main key.
If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 180.
To p r eve nt t ri gge ri n g t h e tow- away a la rm fe a t u r e , s wi tch
off the tow-away alarm before towing the vehicle, or
when parking on a surface subject to movement, such
as a ferry or auto train.
To do so, turn electronic key in steering lock to
position 1 or 0, or remove electronic key from steering
lock. Press tow-away alarm switch (1). The indicator
lamp (2) illuminates briefly.
Exit vehicle, and lock vehicle with the remote control.
The tow-away alarm remains switched off until the
vehicle is locked again with mechanical key or remote
control, at which time it is automatically reactivated.