MERCEDES-BENZ SL-Class 2001 R129 Service Manual

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.
With the automatic central locking system activated, the
doors and trunk are locked at vehicle speeds of approx.
9 mph (15 km/h) or more. The fuel filler flap 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 deactivate:
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.
9mph (15km/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.

38 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Trunk
0Neutral position – push to open (arrow)
1Unl ock ing
2Locking (detent)
3Separate locking of trunk – remove key in this
position.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.
Notes:
In case of a malfunction in the central locking system
the trunk can be locked and unlocked individually.
To lock, turn key to position 2 or 3.
To unlock and open the trunk lid, turn key to position 1,
hold and push to open.
If the fuel filler flap cannot be opened, see page 260.
Important!
Do not place key inside trunk, since trunk is locked
again when closing the lid.
Lower trunk lid using handle and close it with hands
placed flat on edges of trunk.

39 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Trunk lid release switch
1Indicator lamp in switch located in center console
To release the trunk lid, the vehicle must be at standstill
and unlocked with the remote control. Press symbol
side of switch until trunk lid is released.
The indicator lamp (1) in the switch remains on with
trunk lid released.Notes:
With vehicle centrally locked, the trunk can also be
released by using the remote control. PressŠbutton
one second.
The trunk lid cannot be released by the switch when
previously locked separately with the 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 29.
1

40 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
center of the inside trunck rear wall.
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

41 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Power w indows
1Opening
2Interrupting
3Closing
When locking doors or trunk, turn key in door lock or
trunk lock to position 3 and hold. The windows begin to
close automatically after approximately 1 second.
To interrupt the closing procedure, turn key to
position 2.Wh en unlocking d oors or tru nk, turn key in door l ock or
trunk lock to position 1 and hold. The windows begin to
open automatically after approximately 1 second.
To interrupt the opening procedure, turn key to
position 2.
Note:
If the opening/closing procedure is interrupted, it can
only be continued by first turning the key to the
interrupting position (2) and then again to the opening/
closing position (1 or 3) and hold.
Wa r n i n g !
Never operate the windows if there is the
possibility of anyone being harmed by the
procedure.In case the procedure causes potential danger, the
procedure can be immediately reversed by turning
the key to the reversed operational direction within
10 seconds:
• for opening position (1),
• for closing position (3).

42 Antitheft alarm system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Antitheft alarm system
1Indicator lamp in switch located in center console
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 storage compartment between the front
seats,
• 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, for
example, an opened door is immediately closed again. If
the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 156.
The antitheft alarm system is switched off automatically
if the vehicle is unlocked with the electronic main key.

43 Tow-away protection
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 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 156.
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 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.

44 Seats
Te ch n ica l
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
door open, the power seats can also be operated with the
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 adjust the power seat in the following
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

45 Seats
Te ch n ica l
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.
Furthermore, there is a risk of injury in 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.

46 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Storing position in memory
6Memory button
7Position buttons “1”, “2” and “3”
After the seat and head restraint are positioned, push
memory button (6), release, and within 3 seconds push
position button “1”. Two additional sets of positions
may be stored into memory using position buttons “2”
and “3”.Using the same position button, the steering wheel
position and exterior rear view mirror positions will
also be stored together with the seat position. For
adjusting steering wheel and mirrors see page 70.
Recalling stored positions
Press position button “1”, “2” or “3” and hold until seat/
head restraint/steering wheel/exterior rear view mirror
movement has stopped.
Note:
For safety reasons, the seat/head restraint/steering
wheel/exterior rear view mirror movement stops after
releasing the position button.
3
2
1
2
1
2