steering lock MERCEDES-BENZ SLK320 2002 R170 User Guide

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.

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.

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.

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

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.

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

45 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Seat belt nonusage warning system
With the key in steering lock position 2, a warning
sounds for a short time if the driver’s seat belt is not
fastened.
Wa r n i n g !
Failure to wear and properly fasten and position
your seat belt greatly increases your risk of
injuries and their likely severity in an accident.
You and your passenger should always wear seat
belts.If you are ever in an accident, your injuries can be
considerably more severe without your seat belt
properly buckled. Without your seat belt buckled,
you are much more likely to hit the interior of the
vehicle or be ejected from it. You can be seriously
injured or killed.In the same crash, the possibility for injury or
death is lessened if you are wearing your seat belt.
Wa r n i n g !
Never let more people ride in the vehicle than there
are seat belts available. Be sure everyone riding in
the vehicle is correctly restrained with a separate
seat belt.

51 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index BabySmart
TM airbag deactivation system
Special BabySmart
TM compatible child seats, designed
for use with the Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are required for
use with the BabySmart
TM airbag deactivation system.
With the special child seat properly installed, the
passenger front airbag will not deploy. The 7
indicator lamp located on the center console will be
illuminated, except with key removed or in steering lock
position 0. The system does not deactivate the door
mounted side impact airbag.
Self-test BabySmart
TM
without special child seat installed
After turning key in steering lock to position 1 or 2, the
7 indicator lamp located on the center console
comes on for approximately 6 seconds and then
extinguishes.
If the indicator lamp should not come on or is
continuously lit, the system is not functioning. You must
see an authorized Mercedes-Benz Center before seating
any child on the passenger seat.BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
The BabySmart
TM airbag deactivation system will
ONLY work with a special child seat designed to
operate with it. It will not work with child seats
which are not BabySmart
TM compatible.
Never place anything between seat cushion and
child seat (e.g. pillow), since it reduces the
effectiveness of the deactivation system. The
bottom of the child seat must make full contact
with the passenger seat cushion. An incorrectly
mounted child seat could cause injuries to the
child in case of an accident instead of protecting
the child.
Follow the manufacturer’s instructions for
installation of special child seats.The passenger front airbag will not deploy only if
the 7 indicator lamp remains illuminated.Please be sure to check the indicator every time
you use the special system child seat. Should the
light go out while the restraint is installed, please
check installation. If the light remains out, do not
use the BabySmart
TM restraint to transport children
on the passenger seat until the system has been
repaired.

53 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Emergency tensioning retractor (ETR)
The seat belts are equipped with emergency tensioning
retractors. These tensioning retractors are located in
each belt’s inertia reel and become operationally ready
with the key in steering lock position 1 or 2.
The emergency tensioning retractors are designed to
activate only when the seat belts are fastened during
frontal and front-angled impacts and rear impacts
exceeding the first threshold of the SRS and in rear
impacts exceeding a preset severity level. They remove
slack from the belts in such a way that the seat belts fit
more snugly against the body restricting its forward
movement as much as possible.In cases of other frontal impacts, roll-overs, certain side
impacts, rear collisions or other accidents without
sufficient frontal or rear impact forces, the emergency
tensioning retractors will not be activated. The driver
and passenger will then be protected by the fastened
seat belts and inertia reel in the usual manner.
For seat belt and emergency tensioning retractor safety
guidelines see page 61.
Note:
The passenger ETR activates only if the passenger seat
is occupied.
Heavy objects on the passenger seat can appear to the
“SRS” to indicate the presence of an occupant in that
seat which causes the passenger front airbag to deploy
and the ETR to activate in a crash exceeding the
appropriate treshhold.

55 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 3Side impact airbag
The side impact airbags are located in the doors.
The most effective occupant restraint system yet
developed for use in production vehicles is the seat belt.
In some cases, however, the protective effect of a seat
belt can be further enhanced by an airbag.In conjunction with wearing the seat belts, the driver
and passenger airbags can provide increased protection
for the driver and passenger in certain frontal impacts
exceeding preset thresholds.
Door mounted side impact airbags can provide
increased protection to belted occupants on the
impacted side of the vehicle in side impacts exceeding
its preset thresholds.
The operational readiness of the airbag system is
verified by the indicator lamp “SRS” in the instrument
cluster when turning the key in steering lock to
position 2. If no fault is detected, the lamp will go out
after approximately 4 seconds: after the lamp goes out,
the system continues to monitor the components and
circuitry of the airbag system and will indicate a
malfunction by coming on again. If the lamp does not
come on at all or if it fails to extinguish after
approximately 4 seconds or if it comes on thereafter, a
malfunction in the system has been detected.