warning lights MERCEDES-BENZ SLC 2017 Owners Manual

Notes ............................................ .2 87
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 189
Brakes
ABS ................................................. .5 5
Adaptive Brake Assist ...................... 57
BAS .................................................. 55
Brake fluid (notes) ......................... 287
Display message ............................ 179
EBD .................................................. 61
High-performance brake system .... 137
Important safety note s. ................. 136
Maintenance .................................. 137
Parking brake ................................ 132
Riding tip s. ..................................... 136
Warning lamp ................................. 204
Breakdown
Where will If ind...? ........................ 241
see Fla tt ire
see Towing away
Brightness contro l( in strument
cluste rl ig hting) ................................... 31
Bulbs
see Replacing bulbs
C
California
Important notice for retail cus-
tomers and lessees .......................... 23
Calling up am alfunction
see Displa ym essages
Car
see Vehicle
Care
Ca rw as h. ....................................... 236
Exhaus tp ip e. ................................. 240
Exterior lights ................................ 239
Matte finish ................................... 238
Note s. ............................................ 236
Paint .............................................. 237
Power washe r. ............................... 237
Rear vie wc amera .......................... 240
Sensors ......................................... 240
Washing by hand ........................... 237 Wheel s. .......................................... 238
Window s. ....................................... 239
Wipe rb lade s. ................................. 239
CD
see also Digital Operator's Man-
ua l. ................................................. 211
CD player (on-board computer) ........ 169
Cente rc on sole
Lower section .................................. 34
Upper section .................................. 33
Central locking
Automati cl oc king (on-board com-
puter) ............................................. 173
Locking/unlocking (SmartKey ). ....... 63
Changin gb ulbs
High-beam headlamp s. .................... 98
Low-bea mh eadlamp s. ..................... 98
Sid em arker lamps (rear) ................. 99
Child
Restraint system .............................. 53
Child seat
Forward-facing restraint system ...... 54
On the front-passenger sea t. ........... 53
Rearward-facing restraint system .... 54
Children
Specia ls ea tb el tr etractor ............... 52
Cigarette lighter ................................ 221
Cleaning
Mirror turn signal ........................... 239
Climate control
Air-conditioning system ................. 103
Automati cc limate control (dual-
zone) .............................................. 105
Controlling automaticall y. .............. 108
Cooling with ai rd ehumidifica tion .. 107
Defrosting the window s. ................ 110
Defrosting the windshield .............. 109
Genera ln otes ................................ 102
Indicato rl am p. ............................... 108
Information abou tu si ng auto-
mati cc limate control ..................... 106
Ma xi mu mc ooling .......................... 110
Note sonu si ng the air-condition-
ing system ..................................... 104
Overview of systems ...................... 102
Problem with the rea rw in dow
defroster ........................................ 111 Index 5

Engine ............................................ 190
Genera ln ote s. ............................... 178
Hiding (on-boar dc omputer) ........... 178
KEYLESS-G O. ................................. 202
Lights ............................................. 189
Safety systems .............................. 179
SmartKey ....................................... 201
Tires ............................................... 196
Vehicl e. .......................................... 198
Distance Pilo tD IS TRONIC
Activating ....................................... 142
Calling up as peed ......................... 143
Cruise control lever ....................... 142
Displa yM essage ............................ 194
Displays in the instrument cluster .. 145
Driving tip s. ................................... 146
Function/note s. ............................ 140
Important safety notes .................. 141
Setting the specified minimum
distance ......................................... 145
Stopping ........................................ 144
Storing as peed .............................. 143
Switching off .................................. 146
Warning lamp ................................. 209
Distance recorder
see Odometer
see Tri po dometer
Distance warnin g( wa rning lamp) .... 209
Distance warnin gf unction
Function/note s. ............................... 56
Doors
Automati cl oc king (on-board com-
puter) ............................................. 173
Automati cl oc king (switch) ............... 69
Central locking/unlocking
(SmartKey ). ...................................... 63
Control panel ................................... 36
Displa ym essage ............................ 200
Emergency locking ........................... 70
Emergency unlocking ....................... 70
Important safety notes .................... 68
Opening (fro mi nside ). ..................... 69
Overview .......................................... 68
Drinking and driving ......................... 134
Drive program
Automati ct ransmissio n. ................ 125
Displa y. .......................................... 122
SETUP (on-board computer) .......... 175 Driver's door
see Doors
Drivin ga broad
Mercedes-Benz Service ................. 236
Drivin gonf loode dr oads .................. 138
Drivin gs afety system
Active Brake Assist .......................... 56
Drivin gs afety systems
ABS (Anti-lock Braking System) ....... 55
ADAPTIV EB RAK E. ............................ 61
Adaptive Brake Assist ...................... 57
BAS (Brake Assi st Sy stem) .............. 55
Di stance warning function ............... 56
EBD (electroni cb rake force distri-
bution) ............................................. 61
ESP ®
(Electronic Stability Pro-
gram) ............................................... 58
Important safety information ........... 54
Overview .......................................... 54
Drivin gs ystem
AMG sports suspensio n( SLC 43
AMG ). ............................................ 149
Drivin gs ystems
Adaptive Damping System ............. 149
ATTENTIO NA SSIST ........................ 158
Blind Spot Assist ............................ 159
Cruis ec ontrol ................................ 138
Displa ym essage ............................ 192
DISTRONIC PLU S. .......................... 140
Driving Assistance packag e. .......... 159
HOLD function ............................... 148
Lane Keeping Assist ...................... 160
Parking Guidance ........................... 152
PARKTRONIC ................................. 149
Rear vie wc amera .......................... 154
Drivin gt ips
Automati ct ransmission ................. 124
Brakes ........................................... 136
Break-in perio d. ............................. 114
Distance Pilo tD ISTRONIC ............. 146
Downhil lg radient ........................... 136
Drinking and driving ....................... 134
Driving in winter ............................. 138
Driving on floode dr oads ................ 138
Driving on we tr oads ...................... 138
Exhaus tc heck ............................... 134
Fue l. ............................................... 134
Genera l. ......................................... 133 Index 7

Display message ............................ 179
Function/note s. ............................... 58
Genera ln otes .................................. 58
Important safety information ........... 58
Warning lamp ................................. 205
ETS/4ETS (Electroni cT raction Sys-
tem) ...................................................... 58
Exhaus tc heck ................................... 134
Exhaus tp ipe (cleaning instruc-
tions) .................................................. 240
Exterior lighting
Setting options ................................ 93
see Lights
Exterior mirrors
Adjusting ......................................... 88
Dipping (automatic) ......................... 90
Folding in when locking (on-board
computer) ...................................... 174
Folding in/out (automatically ). ........ 89
Folding in/out (electrically) ............. 89
Ou tofp osition (troubleshooting ). .... 89
Storing settings (memory func-
tion) ................................................. 91
Storing the parking position ............. 90
Eyeglasse sc om partment ................. 218
F
Favorites
Overview ........................................ 213
Filler cap
see Refueling
Fillin gc apacitie s( Technical data) ... 284
Flat tire
MOExtended tire s. ......................... 242
Preparing the vehicl e. .................... 241
TIREFIT kit ...................................... 243
see Emergency spare wheel
Floormats ........................................... 230
Frequencies
Mobil ep hone ................................. 282
Two-way radio ................................ 282
Fuel
Additives ........................................ 286
Consumption statistics .................. 166
Displaying the current consump-
tion ................................................ 166
Displaying the rang e. ..................... 166 Driving tip s. ................................... 134
Fue lg auge ....................................... 31
Grade (gasoline ). ........................... 285
Important safety notes .................. 285
Problem (malfunction) ................... 131
Refueling ........................................ 129
Tank content/reserve fue l. ............ 285
Fue lf ille rf lap
Opening ......................................... 130
Fue ll evel
Calling up the rang e( on -board
computer) ...................................... 166
Fue lt ank
Capacity ........................................ 285
Problem (malfunction) ................... 131
Fus ea llocatio nc hart (vehicl et ool
kit) ...................................................... 241
Fuses
Allocation chart ............................. 253
Before changing ............................. 254
Fus eb ox in the engine compart-
ment .............................................. 254
Fus eb ox in the trunk ..................... 254
Important safety notes .................. 253
G
Garag ed oo ro pener
Clearing the memory ..................... 228
Genera ln otes ................................ 226
Important safety notes .................. 226
Opening/closing the garag ed oo r. .2 28
Problems whe np rogramming ....... .2 28
Programming (button in the rear-
view mirror) ................................... 226
Synchronizing the rolling code ....... 227
Gear indicator (on-board com-
puter, SLC 43 AMG) ........................ 175
Genuine parts ...................................... 22
Glove box .......................................... .2 17
Google ™L oc al Search
see also Digita lO perator's Man-
ua l. ................................................ .2 11
H
Handbrake
see Parking brake Index 9
..

Function/information .................... 160
Lap time (RACETIMER) ...................... 176
License plate lamp (displa ym es-
sage) ................................................... 189
Light function, active
Displa ym essag e. ........................... 189
Light senso r( display message) ....... 189
Lights
Activating/deactivating the inte-
rio rl ig hting delaye ds wi tch-off ....... 173
Active light function ......................... 95
Automati ch eadlamp mod e. ............. 93
Cornering light function ................... 95
Hazard warning lamps ..................... 95
Hig hb ea mf lashe r. ........................... 94
High-beam headlamp s. .................... 94
Light switch ..................................... 93
Low-bea mh eadlamp s. ..................... 94
Parking lamps .................................. 94
Rear fog lamp .................................. 94
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 172
Setting the color of the ambient
lighting (on-board computer) ......... 173
Standing lamps ................................ 94
Switching the daytime running
lamps on/of f( on -board com-
puter) ............................................. 172
Switching the exterio rl ig hting
delaye ds wi tch-off on/of f( on -
board computer) ............................ 173
Switching the surround lighting
on/of f( on -board computer) .......... 173
Turn signal s. .................................... 94
see Interior lighting
see Replacing bulbs
Locking
see Central locking
Locking (doors)
Automati c. ....................................... 69
Emergency locking ........................... 70
From inside (central locking but-
ton) .................................................. 69
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 174 Low-beam headlamps
Changing bulb s. ............................... 98
Displa ym essage ............................ 189
Switching on/of f. ............................. 94
Luggag ec over
see Trunk partiti on
L umb
ar support ................................... 84
M M+S tires ............................................ 257
MAGIC SK YC ON TROL ......................... 80
Malfunctio nm essage
see Displa ym essages
Matte finis h( clea ning instruc-
tions) .................................................. 238
mbrace
Call priority .................................... 225
Displa ym essage ............................ 184
Emergency cal l. ............................. 222
Genera ln otes ................................ 221
MB info cal lb ut ton ........................ 224
Remote fault diagnosi s. ................. 225
Roadside Assistance button .......... 223
Self-test ......................................... 222
System .......................................... 222
Mechanical key
Function/note s. ............................... 65
Genera ln otes .................................. 65
Inserting .......................................... 65
Locking vehicl e. ............................... 70
Removing ......................................... 65
Unlocking the driver' sd oo r. ............. 70
Medi aI nt erface
see Separate operating instructions
Memory card (audio) ......................... 169
Memory function ................................. 91
Mercedes-Benz Intelligent Drive
Rear vie wc amera .......................... 154
Messag em emory (on-board com-
puter) .................................................. 178
Messages
see Displa ym essages
Mirrors
see Exterior mirrors
see Rear-vie wm irrorIndex 11

RRACETIMER (on-board computer) .... 176
Radio
Selecting as tation ......................... 168
see separate operating instructions
Radio mode
see also Digital Operator's Man-
ua l. ................................................. 211
Radio-wav er eception/transmis-
sion in the vehicle
Declaration of conformity ................ 25
Reading lamp ....................................... 97
Rear fog lamp
Displa ym essag e. ........................... 189
Switching on/of f. ............................. 94
Rear lamps
see Lights
Rear vie wc amera
Cleaning instructions ..................... 240
Displa yint he multimedi as ys tem .. 155
Function/note s. ............................ 154
Switching on/of f. .......................... 155
Rear windo wd efroster
Genera ln otes ................................ 110
Problem (malfunction) ................... 111
Switching on/of f. .......................... 110
Rear-vie wm irror
Anti-glare (manual) .......................... 88
Dipping (automatic) ......................... 90
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 288
Refueling
Fue lg auge ....................................... 31
Important safety notes .................. 129
Refueling process .......................... 130
see Fuel
Remote control
Programming (garage door
opener) .......................................... 226
Replacing bulbs
Important safety notes .................... 97
Overview of bulb types .................... 98
Removing/replacing the cover
(front whee la rch ). ........................... 98
Reporting safety defects .................... 26
Rescue card ......................................... 27 Reserve (fuel tank)
see Fuel
Reserve fuel
Displa ym essage ............................ 192
Warning lamp ................................. 207
Residual hea t( clim ate control) ........ 111
Restrain ts ystem
Displa ym essage ............................ 185
Introduction ..................................... 37
Warning lamp ................................. 206
Warning lamp (function) ................... 37
Revers eg ea r
Engaging (automati ct ransmis-
sion) ............................................... 123
Reversible floor pane l( trunk) .......... 218
Re v
ersin gf eature
Sid ew in dow s. .................................. 72
Reversin gl amps (display mes-
sage) ................................................... 189
Roadside Assistance (breakdown) .... 24
Roof
Displa ym essage ............................ 200
Important safety notes .................... 75
Opening/closing (with roof
switch) ............................................. 76
Opening/closing (with Smart-
Key ). ................................................ 77
Overview .......................................... 75
Problem (malfunction) ..................... 81
Relocking ......................................... 77
Roo fc arrier ........................................ 219
Roo fs wi tch .......................................... 76
Route guidance
see also Digital Operator's Man-
ua l. ................................................. 211
S
Safety
Childre nint he vehicl e. .................... 51
see Occupant safety
Safety system
see Driving safety systems
SD memory card
Ejecting .......................................... 216
Inserting ........................................ 216
Inserting/removing ........................ 21614
Index

SMS
see also Digital Operator's Man-
ual .................................................. 211
Snow chains ...................................... 257
Sockets
Center console .............................. 221
General notes ................................ 221
Sound
Switchin go n/off ........................... 212
Special seat belt retractor .................. 52
Specialist workshop ........................... .2 6
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 167
In the Instrument cluster ................. 31
Segment s. ..................................... 163
Selectin gt he display unit ............... 172
Sport handling mode
Activating/deactivating (SLC 43
AMG) ............................................... 60
Warning lamp ................................. 206
Standing lamps
Display message ........................... .1 89
Switching on/off .............................. 94
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 116
Steering
Display message ............................ 200
Steering wheel
Adjusting (electrically ). .................... 87
Adjusting (manually ). ....................... 86
Butto no verview ............................... 32
Buttons (on-board computer) ......... 164
Important safety notes .................... 86
Storing settings (memory func-
tion) ................................................. 91
Steering whee lp addle shifters ........ 126
Stopwatch (RACETIMER) ................... 176
Stowag ea reas ................................... 217
Stowag ec om partments
Armrest (under ). ............................ 217
Center console .............................. 218
Cu ph olders ................................... 219
Door ............................................... 218
Eyeglasses compartment ............... 218 Glove box ....................................... 217
Important safety information ......... 217
Rear wal l ........................................ 218
Sto
wag en et ................................... 218
Stowag en et ....................................... 218
Summe rt ires ..................................... 257
Sun visor ............................................ 220
Surround lighting (on-board com-
puter) .................................................. 173
Switchin ga ir-recirculatio nm ode
on/off ................................................. 111
Switchin gonm edi am ode
Via the device list .......................... 216
T Tachometer ........................................ 163
Tail lamps
Displa ym essage ............................ 189
see Lights
Tank content
Fue lg auge ....................................... 31
Technical data
Capacities ...................................... 284
Emergency spare whee l. ................ 280
Information .................................... 282
Tires/wheels ................................. 278
Vehicl ed at a. .................................. 289
TELEAID
Call priority .................................... 225
Emergency cal l. ............................. 222
Genera ln otes ................................ 221
MB info cal lb ut ton ........................ 224
Roadsid eA ssistance button .......... 223
Self-test ......................................... 222
System .......................................... 222
Vehicl eH ealth Check .................... 225
Telephone
Accepting ac al l( multifunction
steering wheel) .............................. 170
Authorizing am obil ep hone (con-
necting) ......................................... 215
Connecting am obil ep hone (gen-
era li nformation) ............................ 214
Displa ym essage ............................ 200
Menu (on-board computer) ............ 169
Numbe rf rom the phone boo k. ....... 170
Redialing ........................................ 17016
Index

The u restraint system warning lamp in the
instrument cluster lights up when the ignition is
switched on. It goes out no later than af ew sec-
onds after the vehicle is started. The compo-
nent soft he restraint system are in operational
readiness.
Am alfunction has occurred if the u restraint
system warning lamp: R
does not light up after the ignition is switched
on R
does not go out after af ew 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 may not deploy as
intended during an accident .T his can affect
for example the Emergency Tensioning
Device or the air bag. This poses an increased
risk of injury or even fatal injury.
Have the restraint system checked and
repaired in aq ualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp C and
PASSENGER AIR BAG OFF indicator lamp D are
part of the Occupant Classification System
(OCS).
The indicator lamps display the status of the
front-passenger front air bag. R
PASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident ,a ll deployment criteria are met, the front-passenger front air bag is
deployed. R
PASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
Dependin gont he person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during aj ourney.R
Children in ac hild restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-
led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" ( Y
page 44) and on "Chil-
dren in the vehicle" ( Y
page 51). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat. R
All other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated ( Y
page 44). Be sure to
observe the notes on "Seat
belts“ ( Y
page 38) and "Air bags"
( Y
page 42). There you can also find infor-
mation on the correc ts eat position.
Seat belts
Introduction Seat belts are the most effective means of
restrictin gt he movemen tofv ehicle occupants
in the event of an accident or the vehicle rolling
over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
occupant in the best position in relation to the
air bag.
The seat belt system comprises: R
Seat belts R
Emergency Tensionin gD evices and seat belt
force limiters
If the seat belt is pulled by the belt loop quickly
or with aj erk ym ovement, the belt retractor
locks. The belt strap cannot be extracted any
further.38
Occupant safety
Safety

If the front passenger does not observe these
conditions, OCS may produce af alse classifica-
tion, e.g. because the front passenger: R
transfers their weight by supporting them-
selves on av ehicle armrestR
sits in such aw ay that their weight is raised
from the seat cushion
If you install ac hild restraint system on the
front-passenger seat, be sure to observe the
correct positioning of the child restraint system.
Never place objects under or behind the child
restraint system, e.g. ac ushion. The entire base
of the child restraint system must always rest on
the seat cushio noft he front-passenger seat.
The backrest of the forward-facing child
restraint system must lie as flat as possible
against the backrest of the front-passenger
seat.
The child restraint system must not touch the
roof or be subjected to al oad by the head
restraint. Adjust the angle of the seat backrest
and the head restraint positio na ccordingly.
Only then can OCS be guaranteed to function
correctly. Alway so bserve the child restraint sys-
tem manufacturer's installation and operating
instructions.
Occupant Classification System opera-
tion (OCS)
C
PASSENGER AIR BAG ON indicator lamp
D
PASSENGER AIR BAG OFF indicator lamp
The indicator lamp si nform you whether the
front-passenger front air bag is deactivated or
enabled. X
Press the Start/Stop button once or twice, or
turn the SmartKey to position 1 or 2 in the
ignition lock.
The system carries out self-diagnostics. The PASSENGER AIR BAG OFF and PASSENGER
AIR BAG ON indicator lamp sm ust ligh tu ps imul-
taneousl yf or approximately six seconds.
The indicator lamp sd isplay the status of the
front-passenger front air bag. R
PASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident, all deployment criteria
are met, the front-passenger front air bag is
deployed. R
PASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
If the status of the front-passenger front air bag
changes whil et he vehicle is in motion, an air bag
display messag ea ppears in the instrument clus-
ter ( Y
page 187). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG ON and PASSENGER AIR
BAG OFF indicator lamps. Be aware of the status
of the front-passenger front air bag both before
and during the journey.
G WARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag is
disabled .Itw il ln ot be deployed in the event of
an accident and cannot perform its intended
protective function. Ap erson in the front-
passenger seat could then, for example ,c ome
into contact with the vehicle's interior, espe-
ciall yift he 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 ensure that: R
the classification of the person in the front-
passenger seat is correct and the front-
passenger front air bag 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 air bag is correct.Occupant safety 45
Safety Z

G WARNING
If you secure ac hild in ar earward-facing child
restraint system on the front-passenge rs eat
and the PASSENGER AIR BAG ON indicator
lamp is lit up, the front-passenge rf ront air bag
may deploy in an accident. The child coul db e
struck by the air bag .T his pose sani ncreased
risk of injury or even fatal injury.
Make sure that the front-passenge rf ront air
bag has been disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit.
If the PASSENGER AIR BAG OFF indicator lamp
remains off and/or the PASSENGER AIR BAG
ON indicator lamp lights up, do not install ar ear-
ward-facing child restraint system on the front-
passenger seat. You can find more information
on OCS under "Problems with the Occupant
Classification System" ( Y
pag e4 8).
G WARNING
If you secure ac hild in af orward-facing child
restraint system on the front-passenge rs eat
and you position the front-passenge rs eat 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 air bag if the PASSENGER
AIR BAG ON is lit up
This poses an increased risk of injury or even
fatal injury.
Move the front-passenge rs eat as far back as
possible .A lways make sure that the shoulder
bel ts trap is correctly routed from the vehicle
bel tl oop to the shoulde rb el tg uide on the
child restraint system. The shoulde rb el ts trap
must be routed forwards and downwards
from the bel tl oop .A lways observe the child
restraint system manufacturer's installation
instructions.
If OCS determines that: R
the front-passenge rs eat is unoccupied ,t he
PASSENGER AIR BAG OFF indicator lamp
lights up after the system self-test and remains lit. This indicates that the front-
passenger front air bag is deactivated. R
the front-passenge rs eat is occupied by a
child of up to twelve months old, in as tandard
child restraint system, the PASSENGER AIR
BAG OFF indicator lamp lights up after the
system self-test and remains lit. This indi-
cates that the front-passenge rf ront air bag is
deactivated.
But even in the case of at welve-month-old
child ,inas tandard child restraint system, the
PASSENGER AIR BAG ON can light up perma-
nently after the system self-test. This indi-
cates that the front-passenge rf ront air bag is
activated. The result of the classification is
dependent on, among other factors, the child
restraint system and the child's stature. Make
sure that the conditions for ac orrect classi-
ficatio na re met. If the PASSENGER AIR BAG
OFF indicator lamp is still lit, do not install a
child restraint system on the front-passenger
seat. R
the front-passenge rs eat is occupied by ap er-
son of smaller stature (e.g. at eenage ro r
smal la dult), 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 clas-
sification. -
If the PASSENGER AIR BAG ON indicator
lamp lights up, move the front-passenger
seat as far back as possible. -
If the PASSENGER AIR BAG OFF indicator
lamp is lit, ap erso nofs maller stature
should not use the front-passenge rs eat.R
the front-passenge rs eat is occupied by an
adult or ap erso nofa dult stature, the
PASSENGER AIR BAG ON indicator lamp
lights up after the system self-test and
remains lit. This indicates that the front-
passenger front air bag is activated.
If children are traveling in the vehicle, be sure to
observe the notes on "Children in the vehicle"
( Y
pag e5 1).
When OCS is malfunctioning, the red u
restraint system warning lamp in the instrument
cluster and the PASSENGER AIR BAG OFF indi-
cator lamp light up simultaneously .T he front-
passenger front air bag is deactivated in this
case and does not deploy during an accident.
Have the system checked by qualified techni-
cians as soon as possible .C onsult an authorized
Mercedes-Benz Center. The front-passenger46
Occupant safety
Safety

Problems with the Occupant Classification System (OCS) Be sure to observe the notes on "System self-test "( Y
page 47).
Problem
Possible causes/consequences and P Solutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult or ap er-
son of as tature corre-
sponding to that of an
adult. The classification of the person on the front-passenger seat is incor-
rect. X
Make sure the condition sf or ac orrect classification of the person
on the front-passenger seat are met ( Y
page 44).X
If the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used. X
Have OCS checked as soon as possible at an authorized Mercedes-
Benz Center.
The PASSENGER AIR
BAG OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger seat
is: R
unoccupied R
occupied with the
weight of ac hild up to
twelve months old in a
child restraint system OCS is malfunctioning. X
Make sure there is nothin gb etween the seat cushion and the child
seat. X
Make sure that the entire base of the child restraint system rests on
the seat cushion of the front-passenger seat. The backrest of the
forward-facing child restraint system must lie as flat as possible
against the backrest of the front-passenger seat. If necessary,
adjust the position of the front-passenger seat. X
When installing the child restraint system, make sure that the seat
belt is tight. Do not pull the seat belt tight using the front-passenger
seat adjustment .T his could result in the seat belt and the child
restraint system being pulled too tightly. X
Check for correct installation of the child restraint system.
Make sure that the head restraint does not apply al oad to the child
restraint system. If necessary, adjust the head restraint accord-
ingly. X
Make sure that no object sa re applying additional weight onto the
seat. X
If the PASSENGER AIR BAG OFF indicator lamp remains off and/or
the PASSENGER AIR BAG ON indicator lamp lights up, do not install
ac hild restraint system on the front-passenger seat. X
Have OCS checked as soon as possible at an authorized Mercedes-
Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
G WARNING
The air bag parts are hot after an air bag has
been deployed. There is ar isk of injury.
Do not touch the air bag parts. Have a
deploye da ir bag replaced at aq ualified spe-
cialist workshop as soon as possible. G WARNING
Ad eploye da ir bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.
Have the vehicle towed to aq ualified special-
ist workshop in order to have ad eploye da ir
bag replaced.
For your own safety and that of your front
passenger, it is important that you have48
Occupant safety
Safety