Page 29 of 290
26 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Panic button
To activate press and hold button (1) for at least one
second. An audible alarm and blinking exterior lamps
will operate for approximately 3 minutes.
To deactivate press button (1) again, or turn key in
steering lock to position 2.Note:
For operation in the USA only: This device complies
with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
Any unauthorized modification to this device could void
to the user’s authority to operate the equipment.
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Page 30 of 290
27 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Mechanical keys
The mechanical keys fit all locks on the vehicle.
Remove the protective cap from the driver’s door lock
before inserting the mechanical key into the lock.Notes:
Use of the key does not operate the central locking
system or arm or disarm the antitheft alarm system.
The alarm sounds when unlocking the door. Cancel
alarm by turning key in steering lock to position 1, or
with the remote control by pressing buttonŒ
or‹.
Page 34 of 290

31 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Automatic central locking
The central locking switch also operates the automatic
central locking.
With the automatic central locking system activated, the
doors and trunk are locked at vehicle speeds of
approximately 9 mph (15 km / h) or more. The fuel filler
flap and the storage compartment in the armrest remain
unlocked.
To a c ti va te :
With key in steering lock position 2 hold upper portion
of switch (1) for a minimum of 5 seconds.
To d ea ct iva te:
With 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 approximately 9 mph
(15 km / h) or more.
If a door is opened from the inside at speeds of
approximately 9 mph (15 km / h) or less with the
automatic central locking activated, the door will again
be automatically locked at speeds of approximately
9mph (15km/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
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 approximately 9 mph
(15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking.
Page 35 of 290
32 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
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). However, the
key must still be in the steering lock.
Driving on rough roads may cause the vehicle to unlock.
If necessary, the vehicle can be locked again with the
central locking switch, see page 30.
Page 39 of 290

36 Antitheft alarm system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The antitheft alarm is automatically armed or disarmed
with the remote control or any of your vehicle’s keys by
locking or unlocking the vehicle.
The antitheft alarm is armed within approximately
10 seconds after locking the vehicle.
A blinking lamp (1) indicates that the alarm is armed.
Operation:
Once the alarm system has been armed, the exterior
vehicle lamps will flash and an alarm will sound when
someone:
•opens a door,
•opens the trunk,
•opens the hood,
•opens the glove box,
•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
activating element (a door, for example) is immediately
closed. If the alarm stays on for more than 20 seconds,
an emergency call is initiated automatically. See Tele
Aid on page 132.
Note:
We recommend that you carry the flat key with you and
keep it in a safe place (e.g. your wallet) so that it is
always handy. Never leave the flat 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 cancel the alarm, insert the key in the steering lock
or press transmit buttonŒ or‹ on the key.
Page 40 of 290

37 Tow-away alarm
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Tow-away alarm
The switch is located on 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. To cancel the alarm,
insert the key in the steering lock or press transmit
buttonŒ or‹ on the key.
If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 132.
To prevent triggering the tow-away alarm feature, switch
off t he tow-away alarm b efor e towin g the vehic le, or
when parking on a surface subject to movement, such
as a ferry or auto train.
To do so, turn key in steering lock to position 0 or 1, or
remove key from steering lock. Press tow-away alarm
switch (1). The indicator lamp (2) illuminates briefly.
Exit vehicle, and lock vehicle with key or remote
control.
The tow-away alarm remains switched off until the
vehicle is locked again with key or remote control, at
which time it is automatically reactivated.
1
2P54.25-2227-26
Page 41 of 290

38 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Power seats
To operate the power seat adjustment switches, turn key
in steering lock to position 1 or 2 (with a door open, the
power seats can also be operated with the key removed
or in steering lock position 0).
Wa r n i n g !
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause the
driver to lose control of the vehicle.Never place hands under seat or near any moving
parts while a seat is being adjusted.For your protection, drive only with properly
positioned head restraints.Adjust head restraint to support the back of the
head approximately at ear level.
Do not drive the vehicle without the seat head
restraints. Head restraints are intended to help
reduce injuries during an accident.When leaving the vehicle always remove the key
from the steering lock, and lock your vehicle.The power seats can also be operated with driver’s
or passenger door open. 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 45 of 290
42 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Seat heater (optional)
The seat heater switches are located in the center
console.
The seat heaters can be switched on with the key in
steering lock positions 1 or 2.Press switch to turn on seat heater:
1Normal seat heating mode. One indicator lamp in
the switch lights up.
2Rapid seat heating mode. Both indicator lamps in
the switch light up. After approximately 5 minutes
in the rapid seat heating mode, the seat heater
automatically switches to normal operation and only
one indicator lamp will stay on.
Turning off seat heater:
If one indicator lamp is on, press upper half of switch.
If both indicator lamps are on, press lower half of
switch.
If left on, the seat heater automatically turns off after
approximately 30 minutes of operation.
P54.25-2036-26
12