airbag MERCEDES-BENZ SLK ROADSTER 2008 Owners Manual

31, 2, 3 ...
7G–TRONIC . . . . . . . . . . . . . . . . . . . . . .86 A
ABS (Anti-lock Braking System ). . . . .50
Display message . . . . . . . . . . . . . .176
Warning lamp . . . . . . . . . . . . . . . . .193
Acceleratio n
Technical data . . . . . . . . . . . . . . . .245
Accident
Notes . . . . . . . . . . . . . . . . . . . . . . .199
Active Service Syste m
see ASSYST PLUS
Airbag
Activation . . . . . . . . . . . . . . . . . . . . .39
Control unit . . . . . . . . . . . . . . . . . . .39
Driver's . . . . . . . . . . . . . . . . . . . . . . .42
Front . . . . . . . . . . . . . . . . . . . . . . . .42
Front passenger . . . . . . . . . . . . . . . .42
Head/thorax airbags . . . . . . . . . . . .43
PASSENGER AIRBAG OFF warning
lamp . . . . . . . . . . . . . . . . . . . . . . .191
System . . . . . . . . . . . . . . . . . . . . . . .41
Air conditioning
2-zone Thermatic . . . . . . . . . . . . . .122
Activating/deactivating air-recir-
culation mode . . . . . . . . . . . . . . . .131
Activating/deactivating auxiliary
heating/ventilatio n.. . . . . . . . . ..132 Air-recirculation mode with con-
venience opening/closing feature
.131
Controlling automatically . . . . . . . .127
Cooling with air dehumidification . .126
Demisting the windscreen . . . . . . .130
Heatmatic . . . . . . . . . . . . . . . . . . .120
Malfunction indicator lamp . . . . . .191
Misted up windows . . . . . . . . . . . .130
Rear window heating . . . . . . . . . . .130
Setting the air distribution . . . . . . .129
Setting the airflow . . . . . . . . . . . . .129
Setting the air vents . . . . . . . . . . . .128
Setting the temperature . . . . . . . . .127
Thermotronic . . . . . . . . . . . . . . . . .124
see Climate control
Air-conditionin g
Activating/deactivating . . . . . . . . .126
AIRSCARF neck-level heatin g. . . . . . .62
Antifreeze concentratio n. . . . . . . . .260
Anti-lock braking syste m
see ABS
Anti-theft alarm system
see ATA
Anti-theft systems . . . . . . . . . . . . . . ..52
Ashtra y. . . . . . . . . . . . . . . . . . . . . . . .140
ASSYST PLU S. . . . . . . . . . . . . . . . . . .165
ATA (anti-theft alarm system) . . . . ..52
Switching off the alarm . . . . . . . . . .53
Audible warning signa l. . . . . . . . . . .197 AUTO lights
Display message . . . . . . . . . . . . . .183
Automatic car wash . . . . . . . . . . . ..166
Automatic transmission Changing gear yoursel f.. . . . . . . . .86
Display in the speedomete r.. . . . ..85
Display message . . . . . . . . . . . . . .177
Driving tips . . . . . . . . . . . . . . . . . . . .87
Emergency running mod e.. . . . . .203
Malfunction . . . . . . . . . . . . . . . . . .203
One-touch gearshifting . . . . . . . . . . .86
Program selector button . . . . . . . . .87
Releasing the parking lock man -
ually . . . . . . . . . . . . . . . . . . . . . . . .212
Selector lever positions . . . . . . . . . .85
Shift ranges . . . . . . . . . . . . . . . . . . .86
Axle load, maximum permissibl e
. . . . . . . . . . . . . . . . . . . . . . . . . .253, 254 B
BAS (Brake Assist) . . . . . . . . . . . . . . ..50
Battery Changing (key) . . . . . . . . . . . . . . . .212
Charging . . . . . . . . . . . . . . . . . . . . .232
Checking (key ).. . . . . . . . . . . . . . .212
Check lamp (key ).. . . . . . . . . . . . .212
Disconnecting . . . . . . . . . . . . . . . .231
Display message . . . . . . . . . . . . . .180
Maintenance (vehicle ).. . . . . . . ..230
Reconnecting . . . . . . . . . . . . . . . . .232 Index
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COMAN
D. . . . . . . . . . . . . . . . . . . . . . . .94
On-board computer . . . . . . . . . . . . .94
Constant headlamp mod e
Setting (on-board computer) . . . . .104
Consumption statistics (on-board
computer) . . . . . . . . . . . . . . . . . . . . . .107
Coolan t. . . . . . . . . . . . . . . . . . . . . . . .154
Checking the level . . . . . . . . . . . . .154
Display message . . . . . .180, 181, 182
Mixture ratio . . . . . . . . . . . . . . . . .259
Temperature gauge . . . . . . . . . . . . .96
Cruise control . . . . . . . . . . . . . . . . . .109
Display message . . . . . . . . . . . . . .179
Cup holde r. . . . . . . . . . . . . . . . . . . . .136 D
Dashboar d
see Cockpit
Date
Setting (on-board computer) . . . . .103
Daytime driving lights
see Constant headlamp mode
Delayed switch-off
Exterior lighting (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . .105
Interior lighting (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . .105
Digital speedometer . . . . . . . . . . . . ..96 Dipped-beam headlamps
Automatic headlamp mode* . . . . . .74
Display message . . . . . . . . . . . . . .182
Symmetrical . . . . . . . . . . . . . . . . . .164
Display messag e. . . . . . . . . . . . . . . .174
Service . . . . . . . . . . . . . . . . . . . . . .165
Symbol messages . . . . . . . . . . . . .179
Text messages . . . . . . . . . . . . . . . .175
Up (AMG menu) . . . . . . . . . . . . . . . .96
Door
Automatic locking . . . . . . . . . . . . . .57
Display message . . . . . . . . . . . . . .179
Emergency locking . . . . . . . . . . . . .211
Emergency unlocking . . . . . . . . . . .210
Opening (from the inside) . . . . . . . .57
Door control panel
Overview . . . . . . . . . . . . . . . . . . . . .33
Draught stop . . . . . . . . . . . . . . . . . . .135
Drinks holde r
see Cup holder
Driver's airbag . . . . . . . . . . . . . . . . . . .42
Driver's seat position . . . . . . . . . . . ..71
Driving abroad . . . . . . . . . . . . . . . . . .164
Driving safety syste m. . . . . . . . . . . . .50
ABS . . . . . . . . . . . . . . . . . . . . . . . . .50
BAS . . . . . . . . . . . . . . . . . . . . . . . . .50
ESP ®
. . . . . . . . . . . . . . . . . . . . . . . .51
Driving syste m. . . . . . . . . . . . . . . . . .109
Cruise control . . . . . . . . . . . . . . . .109 Parktroni
c.. . . . . . . . . . . . . . . . . .115
Speedtronic . . . . . . . . . . . . . . . . . .112
Driving tip
Braking . . . . . . . . . . . . . . . . . . . . . .162
Driving abroad . . . . . . . . . . . . . . . .164
Driving on flooded road s.. . . . . ..164
Driving on wet road s.. . . . . . . . ..164
Winter . . . . . . . . . . . . . . . . . . . . . .161
DVD audio
Operation (on-board computer) . . . .99
DVD video
Operation (on-board computer) . . . .99 E
Easy-entry/exit feature Activating/deactivating (on -
board computer) . . . . . . . . . . . . . .106
Easy-entry feature . . . . . . . . . . . . . . ..65
Easy-exit feature . . . . . . . . . . . . . . . . .65
Electrical/electronic equipment Retrofittin g.. . . . . . . . . . . . . . . . . .241
Electronic Stability Program
see ESP ®
e mark . . . . . . . . . . . . . . . . . . . . . . . . .241
Emergency engine starting . . . . . ..236
Emergency key element Lost . . . . . . . . . . . . . . . . . . . . . . . .207
Emergency locking
Vehicle . . . . . . . . . . . . . . . . . . . . . .211 Index
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Emergency running mod
e
Automatic transmission . . . . . . . . .203
Emergency unlocking
Boot . . . . . . . . . . . . . . . . . . . . . . . .211
Vehicle . . . . . . . . . . . . . . . . . . . . . .210
Engine
Display message . . . . . . . . . . . . . .187
Running irregularl y.. . . . . . . . . . . .201
Starting problems . . . . . . . . . . . . .201
Starting with the key . . . . . . . . . . . .81
Technical data . . . . . . . . . . . . . . . .244
Engine diagnostic warning lamp . ..1 95
Engine electronics . . . . . . . . . . . . . ..241
Malfunction . . . . . . . . . . . . . . . . . .201
Engine number . . . . . . . . . . . . . . . . . .243
Engine oil . . . . . . . . . . . . . . . . . . . . . .258
Checking the oil level (dipstick) . . .153
Checking the oil level (on-board
computer) . . . . . . . . . . . . . . . . . . .152
Consumption . . . . . . . . . . . . . . . . .151
Display message . . . . . . . . . . . . . . . . . . .152, 186, 187
Filler neck . . . . . . . . . . . . . . . . . . .153
Temperature display (on-board
computer) . . . . . . . . . . . . . . . . . . . .96
Topping up . . . . . . . . . . . . . . . . . . .153
ESP ®
(Electronic Stability Program) .51
Activating/deactivating . . . . . . . . . .51
Display message . . . . . . . . . .176, 177
Warning lamp . . . . . . . . . . . . . .51, 194 Exterior lighting
Delayed switch-off (on-board
computer) . . . . . . . . . . . . . . . . . . .105
Exterior mirror parking position
Storing . . . . . . . . . . . . . . . . . . . .67, 69
Exterior mirrors
Adjusting . . . . . . . . . . . . . . . . . . . . .66
Anti-dazzle mode (automatic) . . . . .67
Folding in/out (automatically ).. . . .66
Folding in/out (electrically) . . . . . . .66
Folding in when locking (on-board
computer) . . . . . . . . . . . . . . . . . . .106
Malfunction . . . . . . . . . . . . . . . . . .206
Parking position . . . . . . . . . . . . .67, 69
Resetting . . . . . . . . . . . . . . . . . . . . .66
Storing settings . . . . . . . . . . . . . . . .68
Exterior view
Overview . . . . . . . . . . . . . . . . . . . . .18 F
Fire extinguishe r. . . . . . . . . . . . . . . .174
First-aid kit . . . . . . . . . . . . . . . . . . . . .174
Flat tyre Preparing the vehicle . . . . . . . . . . .218
TIREFIT kit . . . . . . . . . . . . . . . . . . .219
Floormat . . . . . . . . . . . . . . . . . . . . . . .146
Foglamps Display message . . . . . . . . . . . . . .185
Fording . . . . . . . . . . . . . . . . . . . . . . . .164 Frequencies
Garage door opene r.. . . . . . . . . . .262
Telephone . . . . . . . . . . . . . . . . . . .242
Front airbag . . . . . . . . . . . . . . . . . . . . .42
Front-passenger airbag . . . . . . . . . . ..42
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . .255
Loss . . . . . . . . . . . . . . . . . . . . . . . .200
Petrol . . . . . . . . . . . . . . . . . . . . . . .149
Fuel consumptio n. . . . . . . . . . .256, 257
Fuel filler flap Opening/closing . . . . . . . . . . . . . .148
Fuel lin e
Malfunction . . . . . . . . . . . . . . . . . .200
Fuel tank
Malfunction . . . . . . . . . . . . . . . . . .200
Fuse allocation chart . . . . . . . . . . ..237
Fuse box Boot . . . . . . . . . . . . . . . . . . . . . . . .238
Dashboard . . . . . . . . . . . . . . . . . . .238
Engine compartment . . . . . . . . . . .238
Fuse s. . . . . . . . . . . . . . . . . . . . . . . . . .237 G
Garage door Opening/closing (with the remote
control) . . . . . . . . . . . . . . . . . . . . .145
Garage door opener . . . . . . . . . . . . ..144
Clearing the memory . . . . . . . . . . .146 Index
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Frequencies . . . . . . . . . . . . . . . . .
.262
Programming the remote control . .144
Gear indicator (on-board computer) .96
Gearshift program Manua l.. . . . . . . . . . . . . . . . . . . . . .88
Genuine Mercedes-Benz parts . . . ..240
Glove compartment . . . . . . . . . . . . ..138
Golf bag Storage location . . . . . . . . . . . . . . .138
Gross vehicle weight, maximum
permissible . . . . . . . . . . . . . . . . . . . . .253 H
Handbrake Display message . . . . . . . . . . . . . .181
Head/thorax airbags . . . . . . . . . . . . ..43
Headlamp Misting up . . . . . . . . . . . . . . . . . . .205
Headlamp mode (automatic ). . . . . . .74
Headlamps Cleaning . . . . . . . . . . . . . . . . . . . . .168
Cleaning system . . . . . . . . . . . . . . . .76
Headlamps delayed switch-off
see Exterior lighting delayed switch-off
Head restraint
Adjusting (front) . . . . . . . . . . . . .60, 61
Heatin g
see Air conditioning
High-pressure cleaners . . . . . . . . . ..167 HomeLink
®
see Garage door opener I
Immobiliser . . . . . . . . . . . . . . . . . . . . .52
Indicator and warning lam p
Brakes (red) . . . . . . . . . . . . . . . . . .194
Engine diagnostic . . . . . . . . . . . . . .195
ESP ®
. . . . . . . . . . . . . . . . . . . .51, 194
PASSENGER AIRBAG OFF . . . .46, 191
Reserve fuel . . . . . . . . . . . . . . . . . .197
Seat belt . . . . . . . . . . . . . . . . . . . . .195
SRS . . . . . . . . . . . . . . . . . . . . .39, 194
Indicator and warning lamps . . . . ..193
Indicator lamp see Indicator and warning lamp
Instrument cluster . . . . . . . . . . . . . ..90
Overview . . . . . . . . . . . . . . . . . . . . .24
Selecting the language (on-board
computer) . . . . . . . . . . . . . . . . . . .102
Instrument lighting . . . . . . . . . . . . . ..90
Interior lightin g. . . . . . . . . . . . . . . . . .77
Automatic contro l.. . . . . . . . . . . . .77
Delayed switch-off (on-boar d
computer) . . . . . . . . . . . . . . . . . . .105
Emergency lighting . . . . . . . . . . . . . .77
Manual control . . . . . . . . . . . . . . . . .78
Reading lamp . . . . . . . . . . . . . . . . . .78
Interior motion sensor . . . . . . . . . . ..54 Intermittent wipe
Windscreen wiper s.. . . . . . . . . . . . .79 J
Jack Operation . . . . . . . . . . . . . . . . . . . .225
Storage location . . . . . . . . . . . . . . .172
Jump-starting . . . . . . . . . . . . . . . . . . .233
Jump leads . . . . . . . . . . . . . . . . . . .233 K
Key . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Changing the battery . . . . . . . . . . .212
Checking the battery . . . . . . . . . . .212
Closing the roof . . . . . . . . . . . . . . .134
Display message . . . . . . . . . .184, 187
Factory setting . . . . . . . . . . . . . .56, 57
Loss . . . . . . . . . . . . . . . . . . . . . . . .207
Malfunction . . . . . . . . . . . . . . . . . .207
Modifying the programming . . . . . . .56
Opening the roof . . . . . . . . . . . . . .134
Key position s
Key . . . . . . . . . . . . . . . . . . . . . . . . . .59
Kickdown . . . . . . . . . . . . . . . . . . . .87, 89 Index
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9N
Navigation . . . . . . . . . . . . . . . . . . . . .100
Navigation menu (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . .100 O
Oil topping up . . . . . . . . . . . . . . . . . . .153
On-board computer . . . . . . . . . . . . . ..91
AMG menu . . . . . . . . . . . . . . . . . . . .96
Audio menu . . . . . . . . . . . . . . . . . . .98
Display message . . . . . . . . . . . . . .174
DVD menu . . . . . . . . . . . . . . . . . . . .99
Factory setting s.. . . . . . . . . . . . . .101
Instrument cluster submenu . . . . .102
Lighting submenu . . . . . . . . . . . . .102
Message memory menu . . . . . . . . .100
Navigation menu . . . . . . . . . . . . . .100
Settings menu . . . . . . . . . . . . . . . .101
Standard display menu . . . . . . . . . .95
Telephone menu . . . . . . . . . . . . . .108
Trip computer menu . . . . . . . . . . . .107
Vehicle submenu . . . . . . . . . . . . . .102
On-board computer language . . . ..102
One-touch gearshiftin g. . . . . . . . . . . .86
Operating system see On-board computer
Outside temperature
Display (on-board computer) . . .91, 96 Overhead control panel
Overview . . . . . . . . . . . . . . . . . . . . .32
Own number sending (mobile
phone) . . . . . . . . . . . . . . . . . . . . . . . . .143 P
Paint code number . . . . . . . . . . . . ..242
Parking . . . . . . . . . . . . . . . . . . . . . . . . .83
Parking aid . . . . . . . . . . . . . . . . . . . . . .67
Parktronic . . . . . . . . . . . . . . . . . . .115
Parking brake
Display message . . . . . . . . . . . . . .181
Parking lamps
Display message . . . . . . . . . . . . . .185
Parking loc k
Releasing manually (automati c
transmission) . . . . . . . . . . . . . . . . .212
Parking position
Exterior mirror . . . . . . . . . . . . . . . . .67
Parktronic . . . . . . . . . . . . . . . . . . . . . .115
Activating/deactivating . . . . . . . . .117
Malfunction . . . . . . . . . . . . . . . . . .204
Range of the sensors . . . . . . . . . . .115
Warning display . . . . . . . . . . . . . . .116
PASSENGER AIRBAG OFF warning
lamp . . . . . . . . . . . . . . . . . . . . . . .46, 191
Performance . . . . . . . . . . . . . . . . . . .245
Permanent Speedtronic . . . . . . . . ..114 Petrol
Minimum grad e.. . . . . . . . . . . . . .149
Plastic trim
Cleaning . . . . . . . . . . . . . . . . . . . . .168
Power window s
see Side window
Program selector button
Automatic transmission . . . . . . . . . .87
Pulling away . . . . . . . . . . . . . . . . . . . . .82 R
RACETIMER (on-board computer) . ..9 7
Radio Changing a station (on-board
computer) . . . . . . . . . . . . . . . . . . . .99
see separate operating instructions
Rain sensor
Windscreen wipers . . . . . . . . . . . . . .79
Range (on-board computer) . . . . . ..107
R button see Reset button
Rear foglamp
Display message . . . . . . . . . . . . . .185
Rear-view mirror
Adjusting . . . . . . . . . . . . . . . . . . . . .65
Anti-dazzle (manual) . . . . . . . . . . . . .65
Anti-dazzle mode (automatic) . . . . .67
Rear windo w
Cleaning . . . . . . . . . . . . . . . . . . . . .168 Index
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Rear window heating
Malfunction indicator lamp . . . . . .191
Refuelling . . . . . . . . . . . . . . . . . . . . . .148
Remote control Garage door opene r.. . . . . . . . . . .144
Programming (garage door
opener) . . . . . . . . . . . . . . . . . . . . . .144
Replacing the wiper blade s. . . . . . .217
Reserve Display message . . . . . . . . . . . . . .187
Reserve fuel . . . . . . . . . . . . . . . . . . . .255
Display message . . . . . . . . . . . . . .187
Fuel tank . . . . . . . . . . . . . . . . . . . .255
Warning lamp . . . . . . . . . . . . . . . . .197
Reset button . . . . . . . . . . . . . . . . .25, 27
Restraint syste m. . . . . . . . . . . . . . . .178
Airbags . . . . . . . . . . . . . . . . . . . . . . .41
Restraint systems
For childre n.. . . . . . . . . . . . . . . . . .44
Rev counte r. . . . . . . . . . . . . . . . . . . . .90
Reverse gear Engaging (automatic transmission) .85
Engaging (manual transmission) . . .85
Reversing lamp
Display messag e.. . . . . . . . . . . . .185
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Closing (key ).. . . . . . . . . . . . . . . .134
Closing (switch) . . . . . . . . . . . . . . .133
Display message . . . . . . . . . . . . . .188
Opening (key ).. . . . . . . . . . . . . . . .134 Opening (switch) . . . . . . . . . . . . .
.133
Relocking . . . . . . . . . . . . . . . . . . . .134
Roof load, maximum . . . . . . . ..253, 254
Roof rack . . . . . . . . . . . . . . . . . . . . . .136
Roof switch . . . . . . . . . . . . . . . . . . . .133
Run-on time (mobile phone ). . . . . . .143 S
Seat Adjusting . . . . . . . . . . . . . . . . . .60, 61
Correct driver's seat position . . . . . .71
Storing settings . . . . . . . . . . . . . . . .68
Seat belt
Fastening. . . . . . . . . . . . . . . . . . . . .69
Warning lamp . . . . . . . . . . . . . .71, 195
Seat heatin g. . . . . . . . . . . . . . . . . . . . .63
Seat ventilation Malfunction indicator lamp . . . . . .190
Selector lever
Positions . . . . . . . . . . . . . . . . . . . . .85
Service
Display message . . . . . . . . . . . . . .165
Service display
see ASSYST PLUS
Service indicator
see ASSYST PLUS
Service products . . . . . . . . . . . . . . . .255
Brake fluid . . . . . . . . . . . . . . . . . . .260 Coolant . . . . . . . . . . . . . . . . . . . .
.259
Windscreen washer fluid . . . . . . . .260
Settings
Calling up a stored setting . . . . . . . .68
Factory (key ).. . . . . . . . . . . . . .56, 57
Factory (on-board computer) . . . . .101
Setting the unit (on-board computer)
Speedometer . . . . . . . . . . . . . . . . .102
Shift range s
Automatic transmission . . . . . . . . . .86
Display in the speedomete r.. . . . ..85
Side window
Fault . . . . . . . . . . . . . . . . . . . . . . . .206
Opening/closing . . . . . . . . . . . . . . .79
Resettin g.. . . . . . . . . . . . . . . . . . . .81
Side windows
Cleaning . . . . . . . . . . . . . . . . . . . . .168
Snow chains . . . . . . . . . . . . . . . . . . . .161
Socket . . . . . . . . . . . . . . . . . . . . . . . . .141
Soft top see Roo f
Spare wheel
Fitting . . . . . . . . . . . . . . . . . . . . . . .225
Storage location . . . . . . . . . . . . . . .172
Technical data . . . . . . . . . . . . . . . .252
Spee d
Technical data . . . . . . . . . . . . . . . .245
Speed limiter
Speedtronic . . . . . . . . . . . . . . . . . .112 Index
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Centre console
29Centre console
Upper section
i
The layout of the buttons may differ
depending on the equipment in the vehicle. Function Page
1 Opens the stowage com-
partment
139
Opens the cup holder* 136
2
Controls COMAND APS
*
and the audio system*, see
the respective operating
instructions 3 Activates/deactivates the
AIRSCARF neck-level heat
-
ing* for the right-hand seat 62
4 Activates/deactivates the
seat heating* for the right-
hand seat
63
5 Deactivates/activates
Parktronic*
115
6 Unlocks the vehicl
e 57
7 Switches the hazard warn-
ing lamps on/off
76
8 Locks the vehicle
57 Functio
n Page
9 Deactivates/activates
ESP
® 51
a Activates/deactivates the
seat heating* for the left-
hand seat
63
b Activates/deactivates the
AIRSCARF neck-level heat
-
ing* for the left-hand seat 62
c Warning lamp for front-
passenger airbag
46
d Controls Heatmatic
120
Controls Thermatic
* 122
Controls Thermotronic* 124
Switches the rear window
heating on/of
f 130
e
Cigarette lighter*
141At a glance
* optional
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Occupant safet
y38 Occupant safet
y
Seat belts, together with belt tensioners, belt
force limiters and airbags, are coordinate d
restraint systems. They reduce the risk of
injury in defined accident situations and
thereby increase occupant safety. However,
seat belts and airbags generally do not pro-
tect against objects penetrating the vehicl e
from the outside.
To ensure that the restraint systems can
deliver their full potential protection, you
should ensure that:
R the seat and head restraint are adjusted
properly (Y page 59)
R the seat belt has been fastened properl y
( Y page 69)
R the airbags can inflate properly if they ar e
deployed (Y page 41)
R the steering wheel is adjusted properl y
( Y page 63)
R the restraint systems have not been modi-
fied
i An airbag increases the protection of
vehicle occupants wearing a seat belt.
However, airbags are only an additional
restraint system which complements, bu tdoes not replace, the seat belt. All vehicle
occupants must wear their seat belt cor-
rectly at all times, even if the vehicle is
equipped with airbags. This is because - on
the one hand - airbags are not deployed in
all types of accident, as in some situation
s
airbag deployment would not increase th e
protection afforded to vehicle occupants,
provided they are wearing their seat belt
correctly. On the other hand, airbag deploy-
ment only provides increased protection if
the seat belt is worn correctly because:
R the seat belt helps to keep the vehicl e
occupant in the best position in relation
to the airbag
R for example, in a head-on collision, the
seat belt can more adequately prevent
the occupant from being propelle d
towards the force of the impact, and is
thus better suited to prevent injury
Therefore, in accident situations where an
airbag is deployed, it only provides protec-
tion in addition to the seat belt if the seat
belt is being worn correctly. G
Risk of injury
The restraint system may not work as inten-
ded if the following components have bee n
modified or work on these components has
not been performed correctly:
R restraint system, consisting of the seat
belts and anchorages, belt tensioners,
belt force limiters, airbags
R wirin g
R networked electronic system s
Airbags or belt tensioners could then fail ,
e.g. in the event of an accident in which the
deceleration force would normally be high
enough to trigger the systems, or they
could be triggered unintentionally. Never
carry out any modifications on the restraint
systems. Never tamper with electronic
components and their software. G
Risk of accident and injury
Always have maintenance work carried ou t
at a qualified specialist workshop whic h
has the necessary specialist knowledge
and tools to carry out the work required.
Mercedes-Benz recommends that you use
a Mercedes-Benz Service Centre for this
purpose. Safety
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Occupant safet
y 39In particular, work relevant to safety or on
safety-related systems must be carried out
at a qualified specialist workshop. If this
work is not carried out correctly, the oper-
ating safety of your vehicle may be affec -
ted. There is a risk of an accident and injury .SRS (Supplemental Restraint System)
The SRS reduces the risk of occupants com-
ing into contact with the vehicle's interior in
the event of an accident. It can also reduce
the forces to which occupants are exposed
during an accident.
The SRS consists of:
R 1 warning lamp
R belt tensioner s
R belt force limiters
R Airbag s
11 warning lam p The SRS functions are checked regularly
when you turn on the ignition and when the
engine is running. Malfunctions can therefore
be detected in good time. The
1 warning lamp in the instrumen t
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started. G
Risk of injury
If SRS is malfunctioning, individual systems
may be activated unintentionally or not be
triggered in the event of an accident with
heavy braking.
A malfunction has occurred if the 1
warning lamp:
R does not light up when you switch on the
ignition
R does not go out after the engine has been
running for a few seconds
R lights up again once the engine is running
In this case, have SRS checked immedi-
ately at a qualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags In the event of a collision, the sensor in the
airbag control unit evaluates important phys-
ical data such as duration, direction and force
of the vehicle deceleration or acceleration.
Based on the evaluation of this data anddepending on the vehicle's rate of longitudi-
nal deceleration in a collision, in the firs
t
stage the airbag control unit pre-emptively
triggers the belt tensioners.
i The belt tensioners can only be triggered
if the belt tongue is correctly engaged in the
seat belt buckle.
The front airbags are only deployed if there is
an even higher rate of vehicle deceleration in
a longitudinal direction .
Vehicles fitted with adaptive, dual-stage front
airbags: when the first deployment threshold
is reached, the front airbag is filled with
enough gas to reduce the risk of injuries. The
front airbag is only fully inflated if a second
threshold is reached within a few millisec-
onds due to the control unit having detected
further deceleration.
Criteria for triggering belt tensioners and
airbags
In the first stage of a collision, the airbag con-
trol unit evaluates the duration and direction
of vehicle acceleration or deceleration in
order to determine whether it is necessary to
trigger the belt tensioner and/or airbag.
The belt tensioner and airbag triggering
thresholds are variable and are adapted to the
rate of deceleration of the vehicle. This proc- Safety
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Occupant safet
y40
ess is pre-emptive in nature as the airbag
must be deployed during – and not at the end
of – the collision
.
i Airbags are not deployed in all types of
accidents. They are controlled by comple x
sensor technology and evaluation logic.
This process is pre-emptive in nature as
airbag deployment must take place during
the impact and must be adapted to provide
calculated, additional protection for the
vehicle occupants. Not all airbags are
deployed in an accident.
The different airbag systems work inde-
pendently of each other. However, each
individual system depends on the type of
accident determined by the control system
in the first stages of the collision (head-on
collision, side impact, rear-end collision
and overturn) and the extent of the acci-
dent (in particular, the vehicle's rate of
deceleration or acceleration).
The rate of vehicle deceleration or accelera-
tion and the direction of the force are basi-
cally determined by:
R the distribution of forces during the colli -
sion
R the collision angle R
the deformation characteristics of the vehi-
cle
R the characteristics of the object with which
the vehicle has collided, e.g. the other vehi-
cle
Factors which can only be seen and measured
after the collision has taken place do not play
a decisive role in the deployment of an airbag,
nor do they provide an indication of it.
The vehicle may be deformed significantly ,
e. g. on the bonnet or the wing, without an
airbag being deployed. This happens if only
parts which are relatively easily deformed are
affected and the necessary deceleration does
not occur. Conversely, airbags may be
deployed even though the vehicle suffers only
minor deformations. This is the case if, for
example, very rigid vehicle parts such as lon-
gitudinal body members are affected and suf-
ficient deceleration occurs as a result.
Belt tensioners, belt force limiter s The seat belts are fitted with belt tensioners.
!
Do not engage the seat belt tongue in the
buckle on the front-passenger seat if the
seat is not occupied. Otherwise the belt
tensioner could be activated in an emer-
gency. If the seat belt is also equipped with a belt
force limiter, the force exerted by the seat
belt on the seat occupant is reduced.
Belt tensioners tighten the seat belts in an
accident, pulling them close against the body.
i
Belt tensioners do not correct incorrect
seat positions or incorrectly fastened sea t
belts.
Belt tensioners do not pull occupants back
towards the backrest.
The belt force limiters are synchronised with
the front airbags, which spread the forces
exerted by the belt force limiters on the occu-
pant over a greater area.
When the ignition is switched on, the belt ten -
sioner is triggered:
R only if the restraint systems are operational
(the 1 warning lamp lights up after th e
ignition is switched on and goes out onc e
the engine is running)( Ypage 39)
R for each three-point seat belt in the front of
the vehicle when the belt tongue is
engaged in the buckle
R In the event of a head-on or rear-end colli-
sion if the vehicle decelerates or acceler-
ates rapidly in a longitudinal direction
during the initial stages of the collision Safety
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