warning lights MERCEDES-BENZ S-CLASS COUPE 2015 Owners Manual

1, 2, 3 ...
4ETS (Electronic Traction System) see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 212
4MATIC off-road system ...................212
12 V socket
see Sockets
360° camera
Cleaning ......................................... 350
Function/notes ............................ .224 A
ABS (Anti-lock Braking System) Display message ............................ 267
Function/notes ................................ 70
Important safety notes .................... 70
Warning lamp ................................. 305
Accident
Automatic measures after an acci-
dent ................................................. 60
Activating/deactivating air-recir-
culation mode ................................... .146
Activating/deactivating cooling
with air dehumidification ................. 141
Activating/deactivating Night
View Assist Plus
With spotlight function ................... 235
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 260
Display message ............................ 289
Function/notes ............................ .236
Active Body Control (ABC)
Display message ............................ 288
Active Body Control ABC
Function/notes ............................ .207
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 261
Display message ............................ 289
Function/notes ............................ .239
Active light function ......................... 129
Active Light System
Display message ............................ 282 Active multicontour seat
.................. 113
Active Parking Assist
Detecting parking spaces .............. 216
Display message ............................ 290
Exiting a parking space .................. 218
Function/notes ............................ .215
Important safety notes .................. 215
Parking .......................................... 217
ADAPTIVE BRAKE ................................. 77
Adaptive Brake Assist
Function/notes ................................ 74
Adaptive brake lights .......................... 75
Adaptive Damping System (ADS) ..... 211
Adaptive Highbeam Assist Plus
Display message ............................ 283
Function/notes ............................ .130
Switching on/off ........................... 131
Additional speedometer ................... 264
Additives (engine oil) ........................ 408
Air conditioning
General notes ................................ 138
Air pressure
see Tyre pressure
Air vents
Glove compartment ....................... 156
Important safety notes .................. 155
Rear ............................................... 157
Setting .......................................... .155
Setting the centre air vents ........... 156
Setting the side air vents .............. .156
Air-conditioning system
see Climate control
Airbag
Automatic front-passenger front
airbag deactivatio n.......................... 51
Introduction ..................................... 48
PASSENGER AIR BAG indicator
lamps ............................................... 43
Airbags
Display message ............................ 279
Front airbag (driver, front
passenger) ....................................... 50
Important safety guidelines ............. 48
Kneebag ........................................... 50
Sidebag ............................................ 50
Triggering ......................................... 57
Windowba g...................................... 51 4
Index

Convenience opening feature
.......... 100
Convenience opening/closing (air-
recirculation mode) ...........................146
Coolant (engine)
Checking the level ......................... 342
Display message ............................ 283
Important safety notes .................. 409
Temperature gauge ........................ 245
Warning lamp ................................. 310
Coolbox .............................................. 326
Cooling
see Climate control
Copyright ............................................. 28
Cornering light function
Display message ............................ 280
Function/notes ............................ .129
Crash-responsive emergency light-
ing ....................................................... 133
Crosswind Assist (vehicles with
MAGIC BODY CONTROL) ................... 207
Crosswind Assist (vehicles with-
out MAGIC BODY CONTROL) ...............77
Cruise control
Calling up the speed last store d.... 190
Cruise control lever ....................... 189
Deactivating ................................... 191
Display message ............................ 293
Driving system ............................... 189
General notes ................................ 189
Important safety notes .................. 189
LIM indicator lamp ......................... 189
Selecting ........................................ 190
Setting a speed .............................. 191
Storing and maintaining current
speed ............................................. 190
Cup holder
Centre console .............................. 322
Important safety notes .................. 322
Rear compartment ......................... 323 D
Data see Technical data
Data carrier
Selecting ........................................ 254
Daytime driving lights
Display message ............................ 282 Function/note
s............................. 127
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 25
Diagnostics connection ...................... 25
Digital speedometer ......................... 251
Dipped-beam headlamps
Display message ............................ 280
Setting for driving abroad (sym-
metrical) ........................................ 126
Setting for driving on the right/
left ................................................. 263
Switching on/of f........................... 127
DIRECT SELECT lever
Automatic transmission ................. 169
Display
see Display message
see Warning and indicator lamps
Display message
Driving system s............................. 287
Display messages
ASSYST PLU S................................ 344
Calling up (on-board computer) ..... 266
Engine ............................................ 283
General information ....................... 266
Hiding (on-board computer) ........... 266
Introduction ................................... 266
Key ................................................ 301
Lights ............................................. 280
Safety systems .............................. 267
Tyres .............................................. 295
Vehicle ........................................... 297
Distance warning function
Function/note s................................ 73
Distance warning signal (warning
lamp) .................................................. 312
DISTRONIC PLUS
Activating ....................................... 196
Activation conditions ..................... 196
Cruise control lever ....................... 196
Deactivating ................................... 201
Display message ............................ 291
Displays in the instrument cluster .. 200 Driving tip s.................................... 202
Driving with DISTRONIC PLUS ....... 197
Function/note s............................. 194
Important safety notes .................. 195
Selecting ........................................ 196 8
Index

Setting the specified minimum
distance ......................................... 200
Setting the speed .......................... 199
Stopping ........................................ 199
with Steering Assist and Stop&Go
Pilot ............................................... 203
Door
Automatic locking (switch) ............... 92
Central locking/unlocking (key) ...... 85
Control panel ................................... 39
Display message ............................ 299
Emergency locking ........................... 93
Emergency unlocking ....................... 93
Important safety notes .................... 90
Opening (from the inside) ................ 91
Power closing .................................. 92
Drive program
Automatic ...................................... 174
Manual ........................................... 175
Manual (Mercedes-AMG vehi-
cles) ............................................... 176
Driver's door
see Door
Driving abroad
Mercedes-Benz Service ................. 345
Symmetrical dipped beam ............. 126
Driving Assistance package ............. 236
Driving on flooded roads .................. 187
Driving safety system
BAS PLUS with Cross-Traffic
Assist ............................................... 71
COLLISION PREVENTION ASSIST
PLUS ................................................ 72
EBD (electronic brake force distri- bution) ............................................. 77
STEER CONTROL ............................. 80
Driving safety systems
ABS (Anti-lock Braking System) ....... 70
ADAPTIVE BRAK E............................. 77
Adaptive Brake Assist ...................... 74
Adaptive brake lights ....................... 75
BAS (Brake Assist System) .............. 70
Distance warning function ............... 73
ESP ®
(Electronic Stability Pro-
gram) ............................................... 75
Important safety guidelines ............. 69
Overview .......................................... 69 PRE-SAFE
®
Brake ............................. 77
Driving system
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot ............... 203
Driving systems
360°camera .................................. 224
Active Blind Spot Assist ................. 236
Active Body Control ABC ............... 207
Active Lane Keeping Assist ............ 239
Active Parking Assist ..................... 215
AIRMATIC ...................................... 210
ATTENTION ASSIST ........................ 228
Cruise control ................................ 189
Display message ............................ 287
Distronic Plus ................................ 194
Driving Assistance packag e........... 236
HOLD function ............................... 205
Night View Assist Plus ................... 232
PARKTRONIC ................................. 212
Reversing camera .......................... 220
SPEEDTRONIC ............................... 191
Traffic Sign Assist .......................... 230
Driving tips
AMG ceramic brakes ..................... 187
Aquaplaning ................................... 187
Automatic transmission ................. 173
Brakes ........................................... 186
DISTRONIC PLUS ........................... 202
Downhill gradient ........................... 186
Driving abroad ............................... 126
Driving in winter ............................. 188
Driving on flooded roads ................ 187
Driving on wet roads ...................... 187
General .......................................... 184
Icy road surfaces ........................... 188
Limited braking efficiency on sal-
ted roads ....................................... 186
New brake disks ............................ 186
New brake pads/linings ................ 186
Running-in tips ............................... 160
Snow chains .................................. 379
Subjecting brakes to a load ........... 186
Symmetrical dipped beam ............. 126
The first 1500 km .......................... 160
Wet road surface ........................... 186
DVD video
Operating (on-board computer) ..... 255 Index
9

Using ............................................. 387
Jump starting (engine) ......................366 K
Key Changing the battery ....................... 88
Checking the battery ....................... 88
Convenience closing feature .......... 101
Convenience opening feature ....... .100
Display message ............................ 301
Door central locking/unlocking ....... 85
Emergency key element ................... 87
Important safety notes .................... 84
KEYLESS-GO start function .............. 86
Loss ................................................. 89
Modifying the programming ............. 86
Overview .......................................... 84
Positions (ignition lock) ................. 161
Problem (malfunction) ..................... 89
Starting the engine ........................ 163
Key positions
Key ................................................ 161
Start/Stop button .......................... 161
KEYLESS-GO
Convenience closing ..................... .101
Deactivation ..................................... 85
General notes .................................. 85
Locking ............................................ 85
Start function ................................... 86
Unlocking ......................................... 85
Kickdown
Driving tips ................................... .173
Kneebag ............................................... 50 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
Licence plate lamp (display mes-
sage) ................................................... 281
Light sensor (display message) ....... 282
Lighting
see Lights Lights
Activating/deactivating the Intel-
ligent Light System ........................ 262
Active light function ....................... 129
Adaptive Highbeam Assist PLUS .... 130
Automatic headlamp mode ............ 127
Cornering light function ................. 129
Dipped-beam headlamps .............. .127
Driving abroad ............................... 126
Foglamps (extended range) ........... 130
General notes ................................ 126
Hazard warning lamps ................... 128
Headlamp flasher ........................... 128
Intelligent Light System (func-
tion) ............................................... 129
Light switch ................................... 126
Main-beam headlamps ................... 128
Misted up headlamps .................... 132
Motorway mode ............................ .130
Parking lamps ................................ 128
Rear foglamp ................................. 127
Setting exterior lighting ................. 126
Side lamps ..................................... 127
Switching the spotlight on/off ....... 263
Turn signals ................................... 128
see Interior lighting
see Replacing bulbs
LIM indicator lamp
Cruise control ................................ 189
DISTRONIC PLUS ........................... 196
Variable SPEEDTRONIC ................. 192
Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................ 316
Locking
see Central locking
Locking (doors)
Automatic ........................................ 92
Emergency locking ........................... 93
From inside (central locking but-
ton) ................................................. .91
Locking centrally
see Central locking
Luggage net hooks ............................ 321
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 113 Index
13

Parking brake
Display message ............................2 70
Electric parking brake .................... 183
Warning lamp ................................. 309
Parking lamps
Display message ............................ 281
Switching on/off ........................... 128
PARKTRONIC
Deactivating/activating ................. 214
Driving system ............................... 212
Function/notes ............................ .212
Important safety notes .................. 212
Problem (fault) ............................... 215
Sensor range ................................. 213
Warning displa y............................. 214
PASSENGER AIR BAG
Display message ............................ 279
Indicator lamps ................................ 43
Problems (malfunctions) ................ 279
Pedestrian protection
Active bonnet (pedestrian protec-tion) ............................................... 338
Perfume atomizer
Operating ....................................... 147
Perfume via l................................... 147
Problem (malfunction) ................... 149
Petrol .................................................. 405
Pets in the vehicle ............................... 69
Plastic trim (cleaning instruc-
tions) .................................................. 352
Power closing ...................................... 92
Power socket
Boot ............................................... 326
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Operation ......................................... 58
PRE-SAFE ®
(preventive occupant
safety system)
Display message ............................ 274
PRE-SAFE ®
Brake
Activating/deactivating ................. 260
Display message ............................ 274
Function/note s................................ 77
Important safety notes .................... 78
Warning lamp ................................. 312 PRE-SAFE
®
PLUS (anticipatory
occupant protection PLUS)
Display message ............................ 274
Operation ......................................... 59
Program selector button .................. 173
Protection against theft
ATA (Anti-Theft Alarm system )......... 80
Immobiliser ...................................... 80
Interior motion sensor ..................... 81
Tow-away protection ........................ 81
Protection of the environment
General notes .................................. 23
Pulling away
Automatic transmission ................. 164
General notes ................................ 164
Hill start assist ............................... 164 Q
QR code Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 27
Qualified specialist workshop ........... 26 R
Radiator cover ................................... 340
Radio
Selecting a station ......................... 253
Radio-based vehicle components
Declaration of conformity ................ 25
Reading lamp ..................................... 132
Rear compartment
Setting the air vents ...................... 157
Stowage compartment .................. 318
Rear foglamp
Display message ............................ 281
Switching on/of f........................... 127
Rear lamps
see Lights
Rear seats
Overview .......................................... 40
Rear window blind ............................ 324
Rear window heating
Problem (fault) ............................... 146
Switching on/of f........................... 145
Rear-compartment seat belt sta-
tus indicator ........................................ 4816
Index

Start/stop function
see ECO start/stop function
Starting (engine) ................................ 163
STEER CONTROL ..................................80
Steering
Display message ............................3 00
Warning lamps ............................... 314
Steering Assist
see DISTRONIC PLUS
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Display message ............................ 293
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (electrically) ................... 116
Button overview ............................... 34
Buttons (on-board computer) ......... 245
Cleaning ......................................... 352
EASY ENTRY/EXIT feature ............. 118
Gearshift paddle s........................... 174
Important safety notes .................. 116
Steering wheel heating .................. 117
Storing settings (memory func-
tion) ............................................... 123
Steering wheel gearshift paddles .... 174
Steering wheel heating
Problem (malfunction) ................... 118
Switching on/of f........................... 117
Stop&Go Pilot
see DISTRONIC PLUS
Stowage areas ................................... 316
Stowage compartments
Armrest (under) ............................. 318
Centre console .............................. 317
Centre console in rear compart-
ment .............................................. 319
Cup holde r..................................... 322
Door ............................................... 318
Glove compartment ....................... 317
Important safety information ......... 316
Rear ............................................... 318
Spectacles compartment ............... 317
see Stowage areas
Stowage net ....................................... 319 Stowage space
Luggage net retainers .................... 321
Rear seat backrest ......................... 319
Securing a load .............................. 321
Stowage net ................................... 319
Stowage well beneath the boot
floor .................................................... 321
Summer tyres
In winter ........................................ 378
Sun visor ............................................ 323
Suspension tuning
Active Body Control ABC ............... 208
AIRMATIC ...................................... 211
SETUP (on-board computer) .......... 265
Switching the auxiliary heating/
ventilation
On/off ........................................... 150 T
Tail lamps Display message ............................ 281
see Lights
Technical data
Capacities ...................................... 404
Information .................................... 402
Tyres/wheels ................................. 391
Vehicle data ................................... 410
Telephone
Accepting a call (multifunction
steering wheel) .............................. 256
Display message ............................ 300
Introduction ................................... 256
Menu (on-board computer) ............ 256
Number from the phone book ........ 257
Redialling ....................................... 257
Rejecting/ending a call ................. 257
Telephone compartment ................ 318
Temperature
Coolant .......................................... 245
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 265
Outside temperature ...................... 245
Setting (climate control )................ 143
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 265
TEMPOMAT
Function/note s............................. 189 Index
19

Important safety notes
G
WARNING
If the restraint system is modified, it may no
longer work as intended. The restraint system
may then not perform its intended protective function by failing in an accident or triggering
unexpectedly, for example. There is an
increased risk of injury, possibly even fatal.
Never modify parts of the restraint system. Do not attempt to modify the wiring as well as
electronic components or their software.
If it is necessary to modify an airbag system to
accommodate a person with disabilities, con- tact a Mercedes-Benz Service Centre for
details. Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and
at regular intervals while the engine is run-
ning. Therefore, malfunctions can be detec-
ted in good time.
The 6 restraint system warning lamp in
the instrument cluster lights up when the igni- tion is switched on. It goes out no later than afew seconds after the vehicle is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the 6
restraint system warning lamp:
R does not light up after the ignition is
switched on
R does not go out after a few seconds with
the engine running
R lights up again while the engine is running G
WARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or might not be trig-
gered at all in the event of an accident with a high rate of vehicle deceleration. This can
effect belt tensioners or airbags, for example. There is an increased risk of serious or even
fatal injuries.
Have the restraint system checked and
repaired immediately at a qualified specialist
workshop.
PASSENGER AIRBAG indicator lamp
PASSENGER AIR BAG OFF indicator lamp
:
and PASSENGER AIR BAG ON indicator
lamp ;are part of the automatic deactiva-
tion system of the front-passenger front air-
bag.
The indicator lamps display the status of the
front-passenger front airbag.
R PASSENGER AIR BAG ON lights up: the
front-passenger front airbag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
airbag is deployed.
R PASSENGER AIR BAG OFF lights up: the
front-passenger front airbag is disabled. It
will then not be deployed in the event of an
accident.
Depending on the person in the front-
passenger seat, the front-passenger front air-
bag must either be disabled or enabled; see
the following points. You must make sure of
this both before and during a journey.
R Children in a rearward-facing child
restraint system: the PASSENGER AIR
BAG OFF indicator lamp must be lit. The
front-passenger front airbag is disabled. It
is imperative to observe the notes on the Occupant safety
43Safety Z

front airbag both before and during the jour-
ney.
If a person is sitting on the front-passenger
seat, this person must sit:
R with the seat belt fastened correctly
R in an almost upright position with their
back against the seat backrest
R with their feet resting on the floor, if possi-
ble
If the front passenger does not observe these
conditions, the automatic front-passenger
front airbag deactivation system may be influ- enced, e.g. because the front passenger:
R transfers their weight by supporting them-
selves on a vehicle armrest
R sits in such a way that their weight is raised
from the seat cushion
The front-passenger front airbag may be dis-
abled by mistake as a result of these or similar
actions. In this case, the PASSENGER AIR
BAG OFF indicator lamp lights up perma-
nently. The front-passenger front airbag does not then deploy during an accident. G
WARNING
If the PASSENGER AIRBAG OFF indicator lamp is lit, the front-passenger front airbag is disa-
bled. It will not be deployed in the event of an
accident and cannot perform its intended pro-
tective function. A person in the front-
passenger seat could then, for example, come
into contact with the vehicle's interior, espe-
cially if the person is sitting too close to the
dashboard. This poses an increased risk of
injury or even fatal injury.
When the front-passenger seat is occupied,
always make sure that:
R the classification of the person in the front-
passenger seat is correct and that the front-
passenger front airbag is enabled or disa-
bled in accordance with the person in the
front-passenger seat.
R the front-passenger seat has been moved
back as far back as possible.
R the person is seated correctly. Make sure, both before and during the jour-
ney, that the status of the front-passenger
front airbag is correct. G
WARNING
If you secure a child on the co-driver's seat in a rearward-facing child restraint system and
the PASSENGER AIR BAG ON indicator lamp
lights up, the co-driver's airbag could be
deployed in the event of an accident. The childcould be struck by the airbag. There is an
increased risk of injury, possibly even fatal.
In this case, always ensure that the co-driver's
airbag is disabled. The PASSENGER AIRBAG
OFF indicator lamp must light up.
If the PASSENGER AIR BAG OFF indicator
lamp remains off and/or the PASSENGER AIR BAG ON indicator lamp lights up, do not install
a rearward-facing child restraint system on
the front-passenger seat. Further information can be found under "Problems with the auto-matic front-passenger front airbag deactiva-
tion system" (Y page 56). G
WARNING
If you secure a child in a forward-facing child
restraint system on the front-passenger seat
and you position the front-passenger seat too close to the dashboard, in the event of an
accident, the child could:
R come into contact with the vehicle's inte-
rior if the PASSENGER AIR BAG OFF indi-
cator lamp is lit, for example
R be struck by the airbag if the PASSENGER
AIR BAG ON indicator lamp is lit
This poses an increased risk of injury or even fatal injury.
Always move the front-passenger seat as far
back as possible and fully retract the seat
cushion length. Always make sure that the
shoulder belt strap is correctly routed from
the vehicle seat-belt extender to the shoulder
belt guide on the child restraint system. The
shoulder belt strap must be routed forwards
and downwards from the retracted seat-belt
extender. If necessary, adjust the front- Occupant safety
53Safety
Z

passenger seat accordingly. Always observe
the information about suitable positioning of
the child restraint system in this Owner's
Manual as well as the child restraint system
manufacturer's installation instructions.
If the automatic front-passenger front airbag
deactivation system detects that:
R the front-passenger seat is unoccupied, the
PASSENGER AIR BAG OFF indicator lamp
lights up after the system self-test and
remains lit. This indicates that the front-
passenger front airbag is disabled.
R the front-passenger seat is occupied by a
child in a rearward-facing child restraint
system, the PASSENGER AIR BAG OFF indi-
cator lamp lights up after the system self-
test and remains lit. This indicates that the
front-passenger front airbag is disabled.
But in the case of a child in a rearward-
facing child restraint, the PASSENGER AIR
BAG ON indicator lamp can light up after
the system self-test and remain lit. This
indicates that the front-passenger front air- bag is enabled. The result of the classifica-
tion is dependent on, among other factors, the child restraint system and the child's
build. It is recommended that you fit the
child restraint system to a suitable rear
seat.
R the front-passenger seat is occupied by a
child in a forward-facing child restraint sys-
tem, either the PASSENGER AIR BAG ON or
PASSENGER AIR BAG OFF indicator lamp
lights up and remains lit after the system
self-test depending on the result of the
classification. The result of the classifica-
tion is dependent on, among other factors,
the child restraint system and the child's
build.
Move the front-passenger seat as far back
as possible. Always observe the informa-
tion in "Child restraint systems on the front- passenger seat" (Y page 63) and in "Suit-
able positioning of the child restraint sys-
tem" (Y page 65). Alternatively, you can fit the child restraint system to a suitable
rear seat.
R the front-passenger seat is occupied by a
person with a smaller build (e.g. a teenager
or small adult), either the PASSENGER AIR
BAG ON or PASSENGER AIR BAG OFF indi- cator lamp lights up and remains lit after
the system self-test depending on the
result of the classification.
- if the PASSENGER AIR BAG ON indicator
lamp lights up, move the front-passenger seat as far back as possible. Alterna-
tively, a person with a small build can sit on a rear seat.
- if the PASSENGER AIR BAG OFF indicator
lamp is lit, a person with a smaller build
should not use the front-passenger seat.
R the front-passenger seat is occupied by an
adult or a person with a build correspond-
ing to that of an adult, the PASSENGER AIR BAG ON indicator lamp lights up after the
system self-test and remains lit. This indi-
cates that the front-passenger front airbag
is enabled.
If children are travelling in the vehicle, be sure
to observe the notes on "Children in the vehi-
cle" (Y page 60).
If the automatic front-passenger front airbag
deactivation system is malfunctioning, the
red 6 restraint system warning lamp in
the instrument cluster and the PASSENGER
AIR BAG OFF indicator lamp light up simulta-
neously. The front-passenger front airbag is
disabled in this case and does not deploy dur- ing an accident. Have the system checked as
soon as possible by qualified technicians.
Consult a Mercedes-Benz Service Centre. The
front-passenger seat should only be repaired at a Mercedes-Benz Service Centre.
If the front-passenger seat, the seat cover orthe seat cushion is damaged, have the nec-
essary repair work carried out at a Mercedes- Benz Service Centre.
For safety reasons, Mercedes-Benz recom-
mends that you only use a child restraint sys-
tem which has been tested and approved by 54
Occupant safetySafety

Deployment of belt tensioners and air-
bags
Important safety notes G
WARNING
After the airbag deploys, the airbag parts are
hot. There is a risk of injury.
Do not touch the airbag parts. Have a
deployed airbag replaced at a qualified spe-
cialist workshop as soon as possible. G
WARNING
Pyrotechnic seat belt tensioners that have
been deployed are no longer operational and
are unable to perform their intended protec-
tive function. This poses an increased risk of
injury or even fatal injury.
Therefore, have pyrotechnic belt tensioners
which have been triggered immediately
replaced at a qualified specialist workshop.
Mercedes-Benz recommends that you have
the vehicle towed to a qualified specialist
workshop after an accident. Take this into
account, particularly if a seat belt tensioner
was triggered or an airbag was deployed.
An electric motor is used by PRE-SAFE ®
to
trigger the tightening of the seat belt in haz-
ardous situations. This procedure is reversi-
ble.
If the belt tensioners are triggered or an air-
bag is deployed, you will hear a bang, and a
small amount of powder may also be
released. The 6restraint system warning
lamp lights up.
Only in rare cases will the bang affect your
hearing. In general, the powder released is
not hazardous to health but may cause short- term breathing difficulties to persons suffer-
ing from asthma or other pulmonary condi-
tions. Provided it is safe to do so, you should
leave the vehicle immediately or open the
window in order to prevent breathing difficul- ties. Operation During the first stage of a collision, the
restraint system control unit evaluates impor-
tant physical data relating to vehicle deceler-
ation or acceleration, such as:
R duration
R direction
R intensity
Based on the evaluation of this data, the
restraint system control unit triggers the seat
belt tensioners in the event of a head-on or
rear collision.
A seat belt tensioner can only be triggered if:
R the ignition is switched on
R the components of the restraint system are
operational; see "Restraint system warning
lamp" (Y page 43)
R the belt tongue has engaged in the belt
buckle of the respective front seat
The seat belt tensioners in the rear compart-
ment are triggered independently of the lock
status of the seat belts.
If the restraint system control unit detects a
high severity of an accident, in certain head-
on collisions, additional components of the
restraint system are deployed independently
of each other:
R Front airbags and driver's kneebag
R Windowbag, if the system determines that
deployment can offer additional protection
to that provided by the seat belt
On vehicles with the automatic front-
passenger front airbag deactivation system:
depending on the person in the front-
passenger seat, the front-passenger front air-
bag is either disabled or enabled. The front-
passenger front airbag can only be deployed
in an accident if the PASSENGER AIR BAG ON indicator lamp is lit. Observe the information
on the PASSENGER AIR BAG indicator lamps
(Y page 43).
Your vehicle has two-stage front airbags. In
the first deployment stage, the front airbag is
filled with propellant gas to reduce the risk of Occupant safety
57Safety Z