2017 MERCEDES-BENZ SLC child restraint

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

Mobile phone
Connecting (Bluetooth ®
inter-
face) ............................................. .2 14
Connecting another mobile
phone ............................................ 216
Frequencies ................................... 282
Installatio n. .................................... 282
Menu (on-board computer) ............ 169
Transmissio no utput (maximum ). ... 282
Modifying the programming
(SmartKey) .......................................... .6 4
MOExtended tires .............................. 242
Mountin gw heels
Lowering the vehicl e. ..................... 278
Mounting an ew whee l. .................. 277
Preparing the vehicl e. ................... .2 75
Raising the vehicle ......................... 275
Removing aw heel .......................... 277
Securing the vehicle against roll-
ing away ........................................ 275
MP3
Operation ....................................... 169
see also Digita lO perator's Man-
ua l. ................................................ .2 11
Multifunctio nd isplay
Function/notes ............................ .1 65
Permanent displa y. ........................ 172
Multifunctio ns teering wheel
Operating the on-board computer .. 164
Overview .......................................... 32
Music files
see also Digita lO perator's Man-
ua l. ................................................. 211
N
Navigation
Menu (on-board computer) ............ 167
see also Digital Operator's Man-
ua l. ................................................. 211
NECK-PRO hea dr estraints
Important safety notes .................... 50
Operation ......................................... 50
Resetting triggered .......................... 51
Note sonb reaking-i nan ew vehi-
cle ....................................................... 114 O Occupant Classification System
(OCS)
Conditions ....................................... 44
Faults ............................................... 48
Operation ......................................... 45
System self-test ............................... 47
Occupant safety
Air bags ........................................... 42
Automati cm easures afte rana cci-
dent ................................................. 51
Childre nint he vehicl e. .................... 51
Important safety notes .................... 37
Introduction to the restraint sys-
tem .................................................. 37
Occupant Classification System
(OCS) ............................................... 44
PASSENGER AIR BAG indicator
lamps ............................................... 38
Pets in the vehicl e. .......................... 54
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 51
Restraint system warning lamp ........ 37
OCS
Conditions ....................................... 44
Faults ............................................... 48
Operation ......................................... 45
System self-test ............................... 47
Odometer ........................................... 166
Oil
see Engine oil
On-board computer
AMG menu ..................................... 175
Assistance menu ........................... 170
Audio menu ................................... 168
Convenience submenu .................. 174
Displa ym essages .......................... 178
Displaying as ervice message ........ 235
Factory settings submenu ............. 175
Important safety notes .................. 163
Instrument cluster submenu .......... 172
Lighting submenu .......................... 172
Menu overview .............................. 166
Message memory .......................... 178
Navigation menu ............................ 167
Operation ....................................... 164
RACETIMER ................................... 17612
Index

Panic alarm X
To activate: press 3 button C for at
least one second.
Av isual and audible alarm is triggered if the
alarm system is armed. X
To deactivate: press 3 button C again.
or X
Insert the SmartKey into the ignition lock.
or X
Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehicle.
Occupant safety
Introduction to the restraint system The restraint system can reduce the risk of vehi-
cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces
to which vehicle occupants are subjected during
an accident.
The restraint system comprises: R
seat belt system R
air bags
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all
vehicle occupants: R
have fastened their seat belts correctly
( Y
page 40) R
have adjusted their seat and head restraint
properly ( Y
page 82).
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position ( Y
page 82). You also have to make sure that an air bag can
inflate properly if deploye d( Y
page 42).
An air bag supplements ac orrectly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags
are not deployed. When an accident occurs, only
the air bags that increase protection in that par-
ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against object sp enetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" ( Y
page 48).
For information on children traveling with you in
the vehicle and on child restraint systems, see
"Children in the vehicle" ( Y
page 51).
Important safety notes
G WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate ap erson
with disabilities, contact an authorized
Mercedes-Benz Center for details. USA only:
for further information contact our Customer
Assistanc eC enter at 1-800-FOR-MERCedes
(1 ‑ 800 ‑ 36 7 ‑ 6372).
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 running.
Therefore, malfunction sc an be detected in
good time.Occupant safety 37
Safety Z

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

The Emergency Tensionin gD evice tighten st he
seat belt in an accident ,p ulling the belt close
against the body. However it does not pull the
vehicle occupant back in the direction of the
backrest.
The Emergency Tensionin gD evice does not cor-
rect an incorrect seat position or the routing of
an incorrectly fastened seat belt.
When triggered, as eat belt force limiter helps to
reduce the force exerted by the seat belt on the
vehicle occupant.
The seat belt force limiters are synchronized
with the front air bags which absorb part of the
deceleration force. This can reduce the force
exerted on the vehicle occupant sd uring an acci-
dent.
! If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of
the front-passenger seat. This may otherwise
lead to the triggerin goft he Emergency Ten-
sioning Device in the event of an accident,
which will then need to be replaced.
Important safety notes The use of seat belts and child restraint systems
is required by law in: R
all 50 states R
the U.S. territories R
the District of Columbia R
all Canadian provinces
Even where this is not required by law, all vehicle
occupant ss hould correctly fasten their seat
belts before starting the journey.
G WARNING
If the seat belt is not worn correctly, it cannot
perform its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury
or even fatal injury.
Always ensure that all vehicle occupant sh ave
their seat belts fastened correctly and are sit-
ting properly.
G WARNING
The seat belt does not offer the intended level
of protection if you have not moved the back- rest to an almost vertical position. When brak-
ing or in the event of an accident ,y ou could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal
injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
G WARNING
Persons less than 5ft( 1.50 m) tall cannot
wear the seat belt correctly without an addi-
tional and suitable restraint system. If the
seat belt is not worn correctly, it cannot per-
form its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury
or even fatal injury.
For this reason, alway ss ecure persons under
5ft( 1.50 m) tall in suitable additional restraint
systems.
If ac hild younger than twelve years old and
under 5ft( 1.50 m) in height is traveling in the
vehicle: R
alway ss ecure the child in ac hild restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child R
alway so bserve the instructions and safety
notes on "Children in the vehicle"
( Y
page 51) in addition to the child restraint
system manufacturer's installation and oper-
ating instructions R
be sure to observe the instructions and safety
notes on the "Occupant classification system
(OCS)" ( Y
page 44)Occupant safety 39
Safety Z

Air bags
Int rod uctionThe installation poin tofana ir bag can be rec -
ognized by th eA IR BA Gs ymbol.
An air bag complements th ec orrectly fastene d
seat belt .Itisnos ubstitut ef or th es eat belt .T he
air bag provides additional protection in appli-
cable acciden ts ituations.
Not all air bags are deployed in an accident. The
differen ta ir bag systems function independ-
entl yf ro mo ne another ( Y
page 48).
However, no system available today can com-
pletely eliminate injurie sa nd fatalities.
It is also no tp ossibl etor ule out ar is kofi njury
caused by an air bag due to th eh igh spee da t
whic ht he air bag mus tbed eployed.
Import ant safety notes
G WARNIN G
If you do no ts it in th ec orrect seat position ,
th ea ir bag canno tp rotect as intended and
could eve nc aus ea dditional injury when
deployed. This poses an increased ris ko f
injury or eve nf atal injury.
To avoi dh azardous situations, always mak e
sur et ha ta ll of th ev ehicle's occupants:R
hav ef astene dt he ir seat belt sc orrectly ,
includin gp regnant womenR
are sitting correctl ya nd maintai nt he great-
est possibl ed istanc etot he air bagsR
follow th ef ollowin gi nstruction s
Always mak es ur et ha tt he re are no objects
between th ea ir bag and th ev ehicle's occu-
pants .R
Adjus tt he seat sp roperly before beginning
your journey. Always mak es ur et ha tt he seat
is in an almost upright position .T he center of
th eh ead restrain tm us ts upport th eh ead at
about eye level. R
Mov et he driver's and front-passenger seat s
as far bac kasp ossible. The driver's seat posi-
tion mus ta llow th ev ehicl etobed riven safely.R
Only hold th es te ering whee lont he outside .
This allows th ea ir bag to be fully deployed.R
Always lean against th eb ackrest while driv-
ing .Don ot lean forward sorl ean against th e door or side window. You may otherwise be in
th ed eploymen ta rea of th ea ir bags .R
Always keep your fee tint he footwell in fron t
of th es eat .Don ot put your fee tont he dash -
board, for example. Your fee tm ay otherwise
be in th ed eployment area of th ea ir bag.R
Fo rt hi sr eason ,a lways secure person sl ess
than 5ft( 1.5 0m)t al lins ui tabl er estraint sys-
tems .Uptot hi sh eight ,t he seat belt cannot
be worn correctly.
If ac hild is traveling in your vehicle ,a lso
observe the followin gn ot es:R
Alway ss ec ur ec hildren under twelve year so f
ag ea nd less tha n5 ft (1.5 0m )t al lins ui table
child restraint systems. R
Onl ys ec ur eac hild in ar earward-facing child
restraint syste mont he front-passenge rs ea t
when the front-passenge rf ront ai rb ag is
deactivated .Ift he PASSENGER AIR BAG OFF
indicator lamp is permanentl yl it ,t he front-
passenge rf ront ai rb ag is deactivated
( Y
page 38). R
Alway so bser ve the instructions and safety
note sont he "Occupant Classification System
(OCS) "( Y
page 44) and on "Children in the
vehicle" ( Y
page 51 )i na ddit io ntot he child
restraint syste mm an ufacturer's installation
and operating instructions.
Objects in the vehicle interior may prevent
an air bag fro mf unctionin gc or rectly. Before
startin gy ou rj ourney and to avoi dr isks resulting
fro mt h e spee doft he ai rb ag as it deploys, make
sure that: R
there ar enop eople, animals or objects
between the vehicl eo ccupants and an air
bag. R
there ar enoo bj ects between the seat, door
and B-pillar. R
no accessories, such as cup holders, are
attache dtot he vehicl ew it hi nt he deployment
area of an ai rb ag ,e .g .tod oo rs or side win-
dows. R
no heavy, sharp-edged or fragile objects ar ei n
the pockets of your clothing. Store such
objects in as ui tabl ep la ce.
G WARNING
If yo um odify the ai rb ag cove rora ff ix objects
such as sticker stoi t, the ai rb ag can no longer
functio nc orrectly. There is an increase dr isk
of injury.42
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