sensor MERCEDES-BENZ SL-CLASS ROADSTER 2014 Owners Manual
[x] Cancel search | Manufacturer: MERCEDES-BENZ, Model Year: 2014, Model line: SL-CLASS ROADSTER, Model: MERCEDES-BENZ SL-CLASS ROADSTER 2014Pages: 284, PDF Size: 45.52 MB
Page 8 of 284

Breakdown
see Flat tire
see Towing away
Buttons on the COMAND controller 197C
California Important notice for retail
customers and lessees ....................28
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
Carpets .......................................... 223
Car wash ........................................ 222
Display ........................................... 223
Exterior lights ................................ 222
Gear or selector lever ....................223
Interior ........................................... 223
Matte finish ................................... 222
Night View Assist Plus ...................223
Notes ............................................. 221
Paint .............................................. 222
Plastic trim .................................... 223
Power washer ................................ 222
Rear view camera .......................... 222
Roof lining ...................................... 223
Seat belt ........................................ 223
Seat cover ..................................... 223
Sensors ......................................... 222
Tail pipes ....................................... 222
Trim pieces .................................... 223
Washing by hand ........................... 222
Wheels ........................................... 222
Windows ........................................ 222
Wiper blades .................................. 222
Wooden trim .................................. 223
Car keys
see SmartKey
Car wash (care) ................................. 222
CD see also Digital Operator's Manual 188
CD player/CD changer (on-board
computer) .......................................... 161Center console
Lower section .................................. 39
Lower section (AMG vehicles) ..........40
Upper section .................................. 38
Central locking
Automatic locking (on-board
computer) ...................................... 161
Locking/unlocking (SmartKey) ........78
Children
In the vehicle ................................... 62
Restraint systems ............................ 62
Special seat belt retractor ...............66
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 65
Cigarette lighter ................................ 206
Cleaning Mirror turn signal ........................... 222
Clear button ....................................... 197
Climate control Automatic climate control (dual-
zone) .............................................. 115
Controlling automatically ...............116
Cooling with air dehumidification ..116
Defrosting the windows .................116
Defrosting the windshield ..............116
Important safety notes ..................114
Indicator lamp ................................ 116
Maximum cooling .......................... 116
Overview of systems ......................114
Problems with cooling with air
dehumidification ............................ 116
Problem with the rear window
defroster ........................................ 116
Refrigerant ..................................... 278
Refrigerant filling capacity .............279
Setting the air distribution .............116
Setting the airflow .........................116
Setting the air vents ......................116
Setting the climate mode (AIR
FLOW) ............................................ 116
Setting the temperature ................116
Switching air-recirculation mode
on/off ............................................ 116
Switching on/off ........................... 116
Switching residual heat on/off ......116 6
Index
Page 14 of 284

Light function, active
Display message ............................ 163
Lighting
Light switch ................................... 106
Lights
Activating/deactivating the
interior lighting delayed switch-
off.................................................. 161
Active light function .......................109
Automatic headlamp mode .... 107, 108
Cornering light function .................108
Driving abroad ............................... 106
Hazard warning lamps ...................106
High beam flasher .......................... 108
High-beam headlamps ...................108
Low-beam headlamps ............107, 108
Parking lamps ................................ 108
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 161
Setting the color of the ambient
lighting (on-board computer) .........161
Standing lamps .............................. 108
Switching Adaptive Highbeam
Assist on/off ................................. 161
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 161
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 161
Switching the spotlight on/off .......161
Switching the surround lighting
on/off (on-board computer) ..........161
Turn signals ................................... 108
see Replacing bulbs
Light sensor (display message) .......163
Loading aid (trunk) Raising/lowering the roof ..............204
Locking
see Central locking
Locking (doors)
Automatic ........................................ 84
Emergency locking ........................... 84
From inside (central locking
button) ............................................. 84
Locking centrally
see Central locking Locking verification signal (on-
board computer)
............................... 161
Low-beam headlamps Display message ............................ 163
Setting for driving abroad
(symmetrical) ................................. 106
Switching on/off ...................107, 108
Luggage cover
see Trunk partition
Lumbar support
Adjusting the 4-way lumbar
support .......................................... 101 M
MAGIC SKY CONTROL .........................97
Malfunction message see Display messages
Matte finish (cleaning instructions) 222
mbrace Call priority .................................... 211
Display message ............................ 163
Downloading destinations
(COMAND) ..................................... 207
Downloading routes .......................207
Emergency call .............................. 208
General notes ................................ 207
Geo fencing ................................... 207
Locating a stolen vehicle ...............207
MB info call button ........................210
Remote vehicle locking ..................207
Roadside Assistance button ..........209
Search & Send ............................... 207
Self-test ......................................... 207
Speed alert .................................... 207
System .......................................... 207
Triggering the vehicle alarm ........... 207
Vehicle remote malfunction
diagnosis ....................................... 207
Vehicle remote unlocking ..............207
Mechanical key
Function/notes ................................ 80
Locking vehicle ................................ 84
Unlocking the driver's door ..............84
Memory card (audio) .........................161
Memory function ............................... 103
Message memory (on-board
computer) .......................................... 16312
Index
Page 16 of 284

Operating safety
Declaration of conformity ................30
Important safety notes ....................29
Operating system
see On-board computer
Operator's Manual
Vehicle equipment ...........................27
Outside temperature display ...........160
Overhead control panel ......................41 P
Paint code number ............................274
Paintwork (cleaning instructions) ...222
Panic alarm .......................................... 44
Parking ............................................... 130
Important safety notes ..................130
Position of exterior mirror, front-
passenger side ............................... 102
Rear view camera .......................... 147
see PARKTRONIC
Parking aid
Active Parking Assist .....................145
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 163
Parking lamps
Switching on/off ........................... 108
PARKTRONIC
Deactivating/activating .................145
Driving system ............................... 144
Function/notes ............................. 144
Important safety notes ..................144
Problem (malfunction) ...................145
Range of the sensors .....................144
Warning displa y............................. 145
PASSENGER AIR BAG OFF
Problem (malfunction) .....................56
Problems (malfunction) .................. 170
PASSENGER AIR BAG OFF indicator
lamp ...................................................... 51
Phone book see also Digital Operator's Manual 188
Plastic trim (cleaning instructions) .223
Power closing feature .........................84
Power washers .................................. 222Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection) Display message ............................ 167
Operation ........................................ .57
PRE-SAFE ®
Brake
Activating/deactivating .................161
Display message ............................ 167
Function/notes ................................ 73
Warning lamp ................................. 184
Program selector button ..................126
Protection of the environment General notes .................................. 26
Pulling away (automatic
transmission) ..................................... 124 Q
Qualified specialist workshop ...........30 R
RACE START Important safety notes ..................141
RACETIMER (on-board
computer) .......................................... 161
Radar sensor system Activating/deactivating .................161
Display message ............................ 163
Radio
Selecting a station .........................161
see separate operating instructions
Radio mode
see also Digital Operator's Manual 188
Radio-wave reception/
transmission in the vehicle
Declaration of conformity ................30
Reading lamp ..................................... 110
Rear fog lamp Display message ............................ 163
Rear lamps
see Lights
Rear view camera
Cleaning instructions .....................222
Function/notes ............................. 147
Switching on/off ........................... 14814
Index
Page 18 of 284

Switching seat heating on/of
f....... 101
Switching seat ventilation on/off ..101
Selector lever
Positions ........................................ 126
Sensors (cleaning instructions) .......222
Service menu (on-board
computer) .......................................... 161
Service products Brake fluid ..................................... 276
Coolant (engine) ............................ 277
Engine oil ....................................... 276
Fuel ................................................ 275
Important safety notes ..................275
Refrigerant (air-conditioning
system) .......................................... 278
Washer fluid .................................. .278
Service work
see ASSYST PLUS
Settings
Factory (on-board computer) .........161
Menu overview .............................. 192
On-board computer .......................161
Setting the air distribution ...............116
Setting the airflow ............................116
Setting the date/time format see also Digital Operator's Manual 188
Setting the language
see also Digital Operator's Manual 188
Setting the time
see also Digital Operator's Manual 188
SETUP (on-board computer) .............161
Side impact air bag .............................49
Side marker lamp (display
message) ............................................ 163
Side windows Cleaning ......................................... 222
Important safety information .....89, 90
Opening/closing (all) .......................90
Opening/closing (front) ...................90
Overview .......................................... 89
Problem (malfunction) .....................91
Resetting ......................................... 90
SIRIUS services
see also Digital Operator's Manual 188
SmartKey
Changing the battery .......................81
Changing the programming .............79Checking the battery
.......................80
Display message ............................ 163
Door central locking/unlocking .......78
Important safety notes ....................78
Loss ................................................. 82
Mechanical key ................................ 80
Opening/closing the roof ................93
Overview .......................................... 78
Positions (ignition lock) .................121
Problem (malfunction) .....................82
Starting the engine ........................123
SMS
see also Digital Operator's Manual 188
Sockets
Front-passenger footwell ...............206
Points to observe before use .........206
Trunk ............................................. 206
Under the armrest .........................206
Specialist workshop ............................ 30
Special seat belt retractor .................. 66
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 161
In the Instrument cluster .................35
Segments ...................................... 160
Selecting the unit of
measurement ................................ 161
SPORT handling mode
Activating/deactivating (AMG
vehicles) .......................................... 71
Warning lamp ................................. 180
SRS
see SRS (Supplemental Restraint
System)
SRS (Supplemental Restraint
System)
Display message ............................ 168
Introduction ..................................... 45
Warning lamp ................................. 182
Warning lamp (function) ................... 45
Standing lamps
Display message ............................ 163
Switching on/off ........................... 108
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 123
STEER CONTROL .................................. 7416
Index
Page 28 of 284

Protection of the environment
General notes
H
Environmental note
Daimler's declared policy is one of
comprehensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an
environmentally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected
by these factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
R avoid short trips as these increase fuel
consumption.
R always make sure that the tire pressures
are correct.
R do not carry any unnecessary weight.
R remove roof racks once you no longer need
them.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R always have service work carried out at a
qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine when the vehicle
is stationary.
R drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic.
R keep an eye on the vehicle's fuel
consumption. Environmental concerns and
recommendations
Wherever the operating instructions require
you to dispose of materials, first try to
regenerate or re-use them. Observe the
relevant environmental rules and regulations
when disposing of materials. In this way you
will help to protect the environment. Genuine Mercedes-Benz parts
H
Environmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
! Air bags and Emergency Tensioning
Devices, as well as control units and
sensors for these restraint systems, may be
installed in the following areas of your
vehicle:
R doors
R door pillars
R door sills
R seats
R cockpit
R instrument cluster
R center console
Do not install accessories such as audio
systems in these areas. Do not carry out
repairs or welding. You could impair the
operating efficiency of the restraint
systems. 26
Introduction
Page 47 of 284

systems for infants and children, see
"Children in the vehicle" (Y
page 62).SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
The 6 SRS warning lamp
R Air bags
R The air bag control unit with crash sensors
R Emergency Tensioning Device (ETD) for
seat belts
R Seat belt force limiter
SRS reduces the risk of vehicle occupants
coming into contact with parts of the
vehicle's interior in the event of an accident.
It can also reduce the forces to which vehicle
occupants are subjected during an accident.
SRS warning lamp G
WARNING
If SRS is malfunctioning, child restraint
system components may be triggered
unintentionally or might not be triggered at all
in the event of an accident with a high rate of
vehicle deceleration. There is an increased
risk of injury, possibly even fatal.
Have SRS checked and repaired immediately
at a qualified specialist workshop.
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
The SRS components are in operational
readiness when the 6SRS warning lamp
goes out while the engine is running. There is a malfunction if:
R
the 6 SRS warning lamp does not light
up when the ignition is switched on
R the engine is running and the 6SRS
warning lamp does not go out after a few
seconds
R the engine is running and the 6SRS
warning lamp lights up again
Safety guidelines for seat belts,
Emergency Tensioning Devices (ETDs)
and air bags G
WARNING
R Damaged seat belts or seat belts that have
been subjected to stress in an accident
must be replaced. Their anchoring points
must also be checked. Only use seat belts
installed or supplied by an authorized
Mercedes-Benz Center.
R Air bags and pyrotechnic Emergency
Tensioning Devices (ETDs) contain
perchlorate material, which may require
special handling and regard for the
environment. Check your national disposal
guidelines. In California, see
www.dtsc.ca.gov/HazardousWaste/
Perchlorate/index.cfm.
R Air bags and ETDs are designed to function
on a one-time-only basis. An air bag or ETD
that has deployed must be replaced.
R Do not pass seat belts over sharp edges.
They could tear.
R Do not make any modification that could
change the effectiveness of the seat belts.
R Do not bleach or dye seat belts, as this may
severely weaken them. In a crash, they may
not be able to provide adequate protection.
R Do not make any modifications to the SRS
wiring or components.
R Do not modify or remove any components
or parts of the SRS. Occupant safety
45Safety
Z
Page 51 of 284

determined by the Occupant Classification
System (OCS) (Y
page 51).
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second-stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
R the system, based on the OCS weight
sensor readings, detects that the front-
passenger seat is occupied
R the PASSENGER AIR BAG OFF indicator
lamp on the center console is not lit
(Y page 51)
R the air bag control unit predicts a high
impact severity
Knee bags i
Observe the "Important safety notes"
section (Y page 46) Driver's knee bag
:deploys underneath the
steering column and front-passenger knee
bag ;underneath the glove box. They
deploy together with the front air bags. They
are designed to operate together with the
front air bags in frontal impacts if certain
thresholds are exceeded. The knee bags operate at best in conjunction with correctly
positioned and fastened seat belts.
Knee bags provide increased protection for
the driver and front passenger against the risk
of:
R
knee injuries
R thigh injuries
R lower leg injuries
Side impact air bags G
WARNING
Using unsuitable seat covers could restrict or
even prevent deployment of the air bags
integrated into the seats. Consequently, the
air bags cannot protect vehicle occupants as
they are designed to do. In addition, the
function of the air bag deactivation system
could be restricted. This poses an increased
risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz. G
WARNING
Sensors to control the air bags are located in
the doors. Modifications or work not
performed correctly to the doors or door
paneling, as well as damaged doors, can lead
to the function of the sensors being impaired.
The air bags might therefore not function
properly any more. Consequently, the air bags
cannot protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door
paneling carried out at a qualified specialist
workshop.
You should only use seat covers that have
been approved for your vehicle by Mercedes-
Benz. The seat covers must have a special
tear seam for side impact air bags. Otherwise,
the side impact air bags cannot deploy
correctly and therefore cannot provide the Occupant safety
49Safety Z
Page 54 of 284

When the OCS senses that the front-
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 4PASSENGER AIR BAG OFF
indicator lamp will illuminate when the engine
is started and remain illuminated. This
indicates that the front-passenger front air
bag and the front-passenger knee bag are
deactivated.
When the OCS senses that the front-
passenger seat is classified as being empty,
the 4 PASSENGER AIR BAG OFF indicator
lamp will illuminate when the engine is started
and remain illuminated. This indicates that
the front-passenger front air bag and the
front-passenger knee bag are deactivated.
When the OCS senses that the front-
passenger seat occupant is classified as
being heavier than the weight of a typical 12-
month-old child seated in a standard child
restraint or as being a small individual (such
as a young teenager or a small adult), the
4 PASSENGER AIR BAG OFF indicator
lamp will illuminate for approximately 6
seconds when the engine is started.
Depending on occupant weight sensor
readings from the seat, it will then remain
illuminated or go out. If the 4PASSENGER
AIR BAG OFF indicator lamp is illuminated, the
front-passenger front air bag and the front-
passenger knee bag are deactivated. If the
4 PASSENGER AIR BAG OFF indicator
lamp is not illuminated, the front-passenger
front air bag and the front-passenger knee
bag are activated.
When the OCS senses that the front-
passenger seat occupant is classified as an
adult or someone larger than a small
individual, the 4PASSENGER AIR BAG
OFF indicator lamp will illuminate for
approximately six seconds when the engine is
started and then go out. This indicates that
the front-passenger front air bag and the
front-passenger knee bag are activated. If the
4 PASSENGER AIR BAG OFF
indicator lamp is illuminated, the front-
passenger front air bag and the front-
passenger knee bag are deactivated and are
not deployed.
If the 4 PASSENGER AIR BAG OFF
indicator lamp is not illuminated, the front-
passenger front air bag and the front-
passenger knee bag are activated and are
deployed:
R in certain front impacts
R independently of the side impact air bag
and head bag
R if the impact has exceeded a
predetermined threshold value for
deployment
If the front-passenger front air bag is
deployed, the rate of inflation will be
influenced by:
R the rate of vehicle deceleration as assessed
by the air bag control unit
R the front passenger's weight category as
determined by the OCS G
WARNING
Children under 12 years must be secured
correctly in a suitable infant or child restraint
system or booster seat suitable for the size
and weight of the child.
The infant or child restraint must be properly
secured with the vehicle's seat belt fully in
accordance with the child seat
manufacturer's instructions.
Occupants, in particular children, must sit as
upright as possible, fasten the seat belt
correctly and use a suitable infant restraint
system, child restraint system or booster seat
suitable for the size and weight of the child.
Children can be seriously or even fatally
injured by an air bag deploying.
Observe the following information:
R Your vehicle is equipped with air bag
technology designed to deactivate the
front-passenger front air bag and the front- 52
Occupant safetySafety
Page 56 of 284

:
PASSENGER AIR BAG OFF indicator lamp
; PASSENGER AIR BAG ON indicator lamp
If the SmartKey is removed from the ignition
lock or is in position 0, PASSENGER AIR BAG
OFF indicator lamp :does not light up.
PASSENGER AIR BAG ON indicator lamp ;
has no function. It lights up briefly when the
ignition is switched on and then goes out
again.
Occupant Classification System (OCS)
categories the occupant on the front-
passenger seat using a weight sensor. The
front-passenger front air bag and the front-
passenger knee bag are deactivated
automatically for certain weight categories.
PASSENGER AIR BAG OFF indicator lamp :
shows you the current status. If PASSENGER
AIR BAG OFF indicator lamp :lights up, the
front-passenger front air bag and the front-
passenger knee bag are deactivated.
The system does not deactivate:
R the side impact air bag
R the front-passenger head bag
R the Emergency Tensioning Devices
To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in a position that is as upright as possible
with their back against the seat backrest
R with their feet on the floor
The OCS weight sensor reading is affected if
the occupant's weight is transferred, e.g. by
leaning on the armrest. If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at a
qualified specialist workshop.
Mercedes-Benz recommends that you only
use seat accessories which have been
approved by Mercedes-Benz.
Both the driver and the front passenger
should always observe PASSENGER AIR BAG
OFF indicator lamp
:as an indication of
whether or not the front passenger is
positioned correctly. Observe also the air bag
display messages that can be displayed in the
instrument cluster (Y page 170).
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
will also deploy.
The OCS may have detected that the seat:
R is empty or occupied by the weight of a
typical child up to twelve months old,
seated in a child restraint system.
R is occupied by a small individual, such as a
young teenager or a small adult.
R is occupied by a child in a child restraint
system whose weight is greater than that
of a typical twelve month old child.
These are examples of when the OCS
deactivates the front-passenger front air bag
and front-passenger knee bag. Deactivation
takes place although the collision fulfills the
criteria for deploying the driver's air bag.
For further information, see "Air bag display
messages" (Y page 170).
System self-test G
WARNING
If the 4 PASSENGER AIR BAG OFF
indicator lamp does not illuminate, the system
is not functioning. Consult an authorized
Mercedes-Benz Center before seating a child
on the front-passenger seat. 54
Occupant safetySafety
Page 59 of 284

PRE-SAFE
®
(anticipatory occupant
protection system)
Introduction PRE-SAFE
®
takes preemptive measures to
protect occupants in certain hazardous
situations.
Important safety notes !
Make sure that there are no objects in the
footwell or behind the seats when resetting
the seats. There is a risk that the seats
and/or the objects could be damaged.
Despite your vehicle being equipped with the
PRE-SAFE ®
system, the possibility of
personal injuries occurring as a result of an
accident cannot be eliminated.
Always adapt your driving style to suit the
prevailing road and weather conditions and
maintain a safe distance from the vehicle in
front. Drive carefully.
Function PRE-SAFE
®
intervenes:
R in emergency braking situations, e.g. when
BAS is activated.
R in critical driving situations, e.g. when
physical limits are exceeded and the
vehicle understeers or oversteers severely.
R on vehicles with DISTRONIC PLUS: if
BAS PLUS brakes hard or the radar sensor
system detects an imminent danger of
collision in certain situations.
PRE-SAFE ®
takes the following measures
depending on the hazardous situation
detected:
R the seat belts are pre-tensioned.
R if the vehicle skids, the side windows are
closed so that only a small gap remains. R
the front-passenger seat is adjusted if it is
in an unfavorable position.
R Vehicles with a multicontour seat or
active multicontour seat: the air
pressure in the side bolsters is increased.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ®
slackens
the belt pre-tensioning. All settings made by
PRE-SAFE ®
can then be reversed.
If the seat belts are not released:
X When the vehicle is stationary, move the
backrest or seat back slightly.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. More
information about seat-belt adjustment can
be found under "Seat-belt adjustment"
(Y page 60). NECK-PRO head restraints
Important safety notes G
WARNING
Do not secure any objects (e.g. coat hangers)
on the NECK-PRO head restraints. Otherwise,
the NECK-PRO head restraints may not
function properly, or in the event of a rear-end
collision may not be able offer the level of
protection they are designed to provide. G
WARNING
Seat or head restraint covers can cause a
malfunction when the NECK-PRO head
restraints are activated or when the side
impact air bags are deployed, or they can
prevent this completely. The NECK-PRO head
restraints or side impact air bags can
therefore not provide the intended protection.
Do not use any seat or head restraint covers. G
WARNING
For your protection, drive only with properly
positioned head restraints. Occupant safety
57Safety
Z