Page 35 of 297

31 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Locking and unlocking with remote control
Unlocking:
Press transmit button Œ. All turn signal lamps blink 
once to indicate that the vehicle is unlocked.
The remote control can be programmed for two kinds of 
unlocking modes (see below):
Selective unlocking mode –
Press transmit button Œ once to unlock driver’s door, 
storage compartment in armrest, and fuel filler flap.
Press transmit button Œ twice to unlock both doors, 
storage compartment in armrest, fuel filler flap, and 
trunk.
Global unlocking mode –
Press transmit button Œ  once to unlock both doors, 
storage compartment in armrest, fuel filler flap, and 
trunk.
Notes:
If the trunk was previously locked separately, it will 
remain locked, see page 39.
The presently active unlocking mode (selective or 
global) can only be determined by unlocking the vehicle 
with the remote control (see below for changing mode).If within 40 seconds of unlocking with the remote 
control, neither door is opened, the key is not inserted 
in the steering lock, or the central locking switch is not 
activated, the vehicle will automatically lock.
Locking:
Press transmit button ‹ once. All turn signal lamps 
blink three times to indicate that the vehicle is locked.
Note:
If the vehicle cannot be locked or unlocked by pressing 
the transmit button, then it may be necessary to change 
the batteries in the remote control (if ok, battery check 
lamp in transmitter will light briefly when transmitting) 
or to synchronize the remote control, see page 251 and 
page 252. 
     
        
        Page 37 of 297
33 Central locking system
Technical
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 
the user’s authority to operate the equipment. 
     
        
        Page 38 of 297

34 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the key from the steering lock activates the 
start lock-out. The engine cannot be started.
Turning the key in the steering lock to position 2 
deactivates the start lock-out.
Note:
In case the engine cannot be started (vehicle’s battery is 
in order), and Á and î are shown in the 
odometer display field, the system is not operational. 
Contact an authorized Mercedes-Benz Center or call 1-
800-FOR-MERCedes (in the USA), or 1-800-387-0100 (in 
Canada).General notes on the central locking system
• If the key in the steering lock is in position 2, the 
vehicle cannot be locked or unlocked with the 
remote control.
If the vehicle cannot be locked or unlocked:
• Aim transmitter eye at a receiver of either door 
handle and press button‹ orŒ.
• Check the batteries of the remote control,
see page 251.
• Synchronize the central locking system,
see page 252. 
     
        
        Page 41 of 297

37 Central locking system
Technical
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.Notes:
If the vehicle was previously locked with the remote 
control or key, the doors and trunk cannot be unlocked 
with the central locking switch.
Opening a door with the inside door handle will cause 
the alarm to come on. To switch the alarm off, 
pressŒ button or insert key in steering lock and 
turn it to position 1.
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 , wh il e in th e global  remote control mode, 
the complete vehicle is unlocked when a door is opened 
from the inside.
Note:
The storage compartment in the armrest as well as the 
fuel filler f lap cannot be locked or unlocked with the 
central locking switch.
12
P54.25-0314-26 
     
        
        Page 42 of 297

38 Central locking system
Technical
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 key in steering lock position 2 hold upper portion 
of switch (1) for a minimum of 5 seconds.
To  dea cti vate :
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 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 
key in steering lock position 2, the vehicle doors will 
lock if the left front wheel as well as the right rear 
wheel spin are turning 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). Driving on 
rough roads may cause the vehicle to unlock. If 
necessary, the vehicle can be locked again with the 
interior central locking switch. 
     
        
        Page 47 of 297

43 Tow-away protection
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Tow -away  ala 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 the form 
of f lashing 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 155.
To prevent triggering the tow-away alarm feature, switch 
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 key in steering lock to position 1 or 0, or 
remove key from steering lock. Press tow-away alarm 
switch (1). The indicator lamp (2) illuminates brief ly.
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. 
     
        
        Page 48 of 297

44 Seats
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power seats
The switches are located in both doors.
Turn key in steering lock to position 1 or 2 (with either 
d oor open, the power seats ca n a lso be opera ted  w it h th e 
key removed or in steering lock position 0).
The position should be as far rearward as possible, 
consistent with ability to properly operate controls.We recommend  to ad just th e power se at in th e fol lowing 
order:
1Seat, up/down
Press the switch (up/down direction) until 
comfortable seating position with still sufficient 
headroom is reached.
2Seat adjustment, fore/aft
Press the switch (fore/aft direction) until a 
comfortable seating position is reached that still 
allows you to reach the accelerator/brake pedal 
safely.
3Seat cushion tilt
Press the switch in the direction of the arrow until 
your legs are lightly supported.
4Backrest tilt
Press the switch in the direction of the arrow until 
the backrest is in an almost upright position. Adjust 
the steering wheel until your arms are slightly 
angled when holding the steering wheel. For 
steering wheel adjustment see page 70.
3
2
1
2
1
2 
     
        
        Page 49 of 297

45 Seats
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 5Head restraint
(with shoulder belt height adjustment)
Adjust the head restraint so that the upper portion 
of the shoulder belt is located as close as possible to 
the middle of the shoulder. The head restraint can 
be tilted forward by hand.
Note:
To prevent the backrest from touching the soft top 
storage compartment cover when the seat is moved 
back, the backrest will automatically move to a more 
upright position.
When reclining the backrest, the seat will automatically 
move forward to prevent the backrest from touching the 
soft top storage compartment cover.
Wa r n i n g !
When leaving the vehicle always remove the key 
from the steering lock, and lock the vehicle.The power seats can also be operated with a 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.
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 ride in a moving vehicle with the backrest 
reclined.
Sitting in an excessively reclined position can be 
dangerous. You could slide under the seat belt in a 
collision. If you slide under it, the belt would apply 
force at the abdomen or neck. That could cause 
serious or even fatal injuries. The backrest and seat 
belt provide the best restraint when the wearer is 
in an upright position and the belt is properly 
positioned on the body.The rear storage area should never be occupied by 
passengers since the vehicle is a 2 seater. 
Fu rth ermore, there i s a ri sk of inju ry i n the rear by  
adjusting the power assisted front seats.Never place hands under seat or near any moving 
parts while a seat is being adjusted.