lock MERCEDES-BENZ E320 WAGON 2003 S210 Owner's Guide

62 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Unfastening of seat belts
Push the release button (3) in the belt buckle (2).
Allow t he retractor to completely rewind t he seat belt by
guiding the latch plate (1).
Operation
The inertia reel stops the belt from unwinding during
sudden vehicle stops or when quickly pulling on the
belt. The locking function of the reel may be checked by
quickly pulling out the belt.
Wa r n i n g !
USE SEAT BELTS PROPERLY.• Seat belts can only work when used properly.
Never wear seat belts in any other way than as
described in this section, as that could result
in serious injuries in case of an accident.• Each occupant should wear their seat belt at all
times, because seat belts help reduce the
likelihood of and potential severity of injuries
in accidents, including rollovers. The
integrated restraint system includes SRS
(driver airbag, front passenger airbag, front
and rear door mounted side impact airbags,
head protection window curtain airbags for
side windows), ETD (seat belt Emergency
Tensioning Device ), and front seat knee
bolsters. The system is designed to enhance the
protection offered to properly belted occupants
in certain frontal (front airbags) and side (side
impact and window curtain airbags) impacts
which exceed preset deployment thresholds.

65 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 electronic key removed or in
steering lock position 0. The system does not deactivate
the door mounted side impact airbag and the window
airbag.
Self-test BabySmart
TM
without special child seat installed
After turning electronic 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 front 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 ar accident instead of protecting the child.Follow the manufacturer’s instructions for
installation of special child seats.When using a BabySmart
TM compatible child seat
on the front passenger seat, the front passenger
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 front passenger seat
until the system has been repaired.

67 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Emergency tensioning device (ETD)
The seat belts for the front and outer rear seats are
equipped with emergency tensioning devices. These
tensioning devices are located in each belt’s inertia reel
and become operationally ready with the electronic key
in steering lock position 1 or 2.
The ETDs for the driver and front seat passenger are
designed to activate only when the seat belts are
fastened and during certain frontal 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.
The rear seat belt ETDs will deploy in the same
circumstances whether or not the seat belts are
fastened.In cases of other frontal impacts, angled impacts, roll-
overs, certain side impacts, or other accidents without
sufficient frontal or rear forces, the emergency
tensioning devices will not be activated. The driver and
passengers will then be protected by the fastened seat
belts and inertia reel in the usual manner.
For seat belt and emergency tensioning device safety
guidelines, see page 75.
Note:
The front ETD activates only if the front seat is occupied
and the seat belt is fastened.
Objects heavier than 20 lbs (9 kg) on the front
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 ETD to activate
in a crash exceeding the appropriate threshold.

68 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Airbags
1Driver airbag
2Front passenger airbagThe 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 front passenger airbags can provide increased
protection for the driver and front passenger in certain
frontal impacts exceeding preset thresholds.
Door mounted side impact and head protection window
curtain airbags can provide increased protection to
belted outboard occupants on the impacted side of the
vehicle in side impacts exceeding its preset threshold.
The operational readiness of the airbag system is
verified by the indicator lamp SRS in the instrument
cluster when turning the electronic key in steering lock
to position 1 or 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.
2
1
P91.60-2248-27

69 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index The following system components are monitored or
undergo a selfcheck: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
devices, seat sensor.
Initially, when the electronic key is turned from steering
lock position 0 to position 1 or 2, malfunctions in the
crash-sensors are detected and indicated (the SRS
indicator lamp stays on longer than 4 seconds or does
not come on).
Have the system checked at your authorized
Mercedes-Benz Center immediately.
In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.Note:
See page 246 for information on the Supplemental
Restraint System (SRS) indicator lamp.
Wa r n i n g !
In the event a malfunction of the SRS is indicated
as outlined above, the SRS may not be operational.
For your safety, we strongly recommend that you
visit an authorized Mercedes-Benz dealer
immediately to have the system checked; otherwise
the SRS may not be activated when needed in an
accident, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could also result in injury.

77 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Infant and child restraint systems
We recommend all infants and children be properly re-
strained at all times while the vehicle is in motion. All
lap-shoulder belts except the driver’s seat belt have
special seat belt retractors for secure fastening of child
restraints.
To activate, pull shoulder belt out completely and let it
retract. During the seat belt retraction a ratcheting
sound can be heard to indicate that the special seat belt
retractor is activated. The belt is now locked.
To deactivate, release seat belt buckle and let seat belt
retract completely. The seat belt can again be used in
the usual manner.Note:
For child seats with mounting fittings for tether
anchorages refer to page 79 (installation of infant and
child restraint systems).
Wa r n i n g !
Never release the seat belt buckle while vehicle is
in motion, since the special seat belt retractor will
be deactivated.

80 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Prior to installing a tether strap, note the following
steps:
1Roll up retractable luggage cover and partition net,
seepage172.
2Fold backrest forward (see page 169), guide tether
strap between head restraint and top of seat back.
He ad re straint m ust be installed and positioned
such that the top tether strap can pass freely
between the head restraint and top of seat back. Be
careful that the tether strap is not twisted. Fold
backrest back until it locks in place.
If the top tether is installed on the left back side of
rear backrest, remove twin-reel roller blind, see
page 172.
The tether strap has to run through the locking
mechanism of twin-reel-roller blind.
3Fold up anchorage rings (2).To secure a tether strap to the anchorage, securely
fasten the hook (1), which is part of the tether strap, to
the anchorage ring (2). For safety, please make sure that
the hook has attached to the ring beyond the safety
catch, as illustrated.
Wa r n i n g !
Always lock backrest in its upright position when
rear seat bench is occupied by passengers, or the
extended cargo area is not in use. Check for secure
locking by pushing and pulling on the backrest.

81 Steering wheel adjustment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Steering wheel adjustment
Turn electronic key in steering lock to position 1 or 2
(with the driver’s or front passenger’s door open, the
steering wheel can also be operated with the electronic
key removed or in steering lock position 0).
To lengthen or shorten the steering column, push switch
forward or backward.
To raise or lower steering wheel, push switch up or
down.Note:
The steering wheel position can be stored in memory
together with the seat / head restraint / exterior rear
view mirror positions, see page 45.
P46.00-2010-26
Wa r n i n g !
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving could
cause the driver to lose control of the vehicle.

82 Rear view mirrors
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Rear view mirrors
Inside rear view mirror
Manually adjust the inside rear view mirror.
Use your inside rear view mirror to determine the size
and distance of objects seen in the passenger-side
convex mirror.
Rear view mirror, automatic antiglare
Antiglare mode:
With the electronic key in steering lock position 2, the
mirror reflection brightness responds to changes in
light sensitivity.
With gear selector lever in position “R”, or with the
interior lamp switched on, the mirror reflection
brightness does not respond to changes in light
sensitivity.Note:
The automatic antiglare function does not react, if
incoming light is not aimed directly at sensors in the
inside rear view mirror.
The automatic antiglare function will not react for
example, if the rear window sun shade is in raised
position.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid to come into contact with eyes, skin,
clothing, or respiratory system. In cases it does,
immediately flush affected area with water, and
seek medical help if necessary.

83 Rear view mirrors
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior rear view mirrors
The switch is located on the center console.
Turn electronic key in steering lock to position 1 or 2.
First select the mirror to be adjusted - press button:
%Left mirror
&Right mirror
To adjust, toggle the switch forward, backward or to
either side.With the electronic key in steering lock position 2, the
driver’s side mirror reflection brightness responds to
changes in light sensitivity.
With gear selector lever in position “R”, or with the
interior lamp switched on, the driver’s side mirror
brightness does not respond to changes in light
sensitivity.
Wa r n i n g !
Exercise care when using the passenger-side
mirror. The passenger-side exterior mirror is
convex (outwardly curved surface for a wider field
of view). Objects in mirror are closer than they
appear. Check your inside rear view mirror or
glance over your shoulder before changing lanes.In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.