2017 MERCEDES-BENZ SLC child lock

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

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

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

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 leave children unsupervised in the vehi-
cle, they coul ds et it in motion by, for example:R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicl ee quip-
ment and become trapped. There is ar isk of
an accident and injury.
When leaving the vehicle, alway st ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
G WARNING
If persons, particularl yc hildren are subjected
to prolonged exposure to extreme hea to r
cold, there is ar isk of injury ,p ossibly even
fatal .N ever leave children unattended in the
vehicle.
G WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularl yont he metal parts of the child
restraint system. There is ar isk of injury.
If you leave the vehicle, taking the child with
you ,a lway se nsure that the child restraint
system is not expose dtod irect sunlight. Pro-
tect it with ab lanket, for example. If the child
restraint system has been expose dtod irect
sunlight, let it cool dow nb efore securing the
child in it. Never leave children unattended in
the vehicle.
Always ensure that all vehicl eo ccupants have
their seat belts fastened correctly and are sitting
properly .P articular attention must be pai dt o
children.
Observe the safety notes on the seat belt
( Y
pag e3 9) and the notes on correct use of seat
belts ( Y
pag e4 0).
Ab ooster seat may be necessary to achieve
prope rs eat bel tp ositioning for children over
41 lbs (18 kg )u ntil they reach ah eight where a three-point seat bel tc an be properly fastened
without ab ooster seat.
Special seat bel tr etractor
G WARNING
If the seat bel tisr eleased while driving, the
child restraint system wil lnol onger be
secure dp roperly .T he special seat bel tr etrac-
tor is disable da nd the inertia real draw sina
portion of the seat belt. The seat bel tc annot
be immediatel yr efastened. There is an
increased risk of injury ,p ossibly even fatal.
Stop the vehicl ei mmediately, paying atten-
tion to road and traffic conditions. Reactivate
the special seat bel tr etractor and secure the
child restraint system properly.
The seat bel tont he front-passenge rs ide is
equipped with as pecial seat bel tr etractor.
When activated, the special seat bel tr etractor
ensure st hat the seat bel tw il ln ot slacken once
the child restraint system has been secured.
Installing ac hild restraint system: X
Always comply with the child restraint system
manufacturer's installation instructions. X
Pul lt he seat bel ts moothly out of the belt
loop. X
Engage the seat bel tt ongue in the bel tb uckle.
Activating the special seat bel tr etractor:X
Pul lt he seat bel to ut full ya nd let the inertia
reel retract it again.
Whil et he seat bel tisr etracting, you should
hear ar atcheting sound .T he special seat belt
retractor is activated. X
Push the child seat restraint system dow ns o
that the seat bel tist ight and does not loosen.
Removing ac hild restraint system and deacti-
vating the special seat bel tr etractor:X
Always comply with the child restraint system
manufacturer's installation instructions. X
Press the release button of the bel tb uckle,
hold the bel tt ongue firmly and guide it back
toward sb el tl oop.
The special seat bel tr etractor is deactivated.52
Children in the vehicle
Safety

instructions and safet yn otes on the "Occupant
Classification System (OCS)" ( Y
page 44).
You can thus avoid the risk st hat could arise as
ar esult of: R
an incorrectly categorized perso nint he front-
passenger seat R
the unintentional deactivatio noft he front-
passenger front air bag R
the unsuitable positionin goft he child
restraint system, e.g. too clos etot he dash-
board
Rearward-facing child restraint system If it is absolutely necessary to install ar earward-
facin gc hild restraint system on the front-
passenger seat, always make sure that the
front-passenge rf ront air bag is deactivated.
Only if the PASSENGER AI RB AG OFF indicator
lamp is permanently lit ( Y
page 38) is the front-
passenger front air bag deactivated.
Always observe the child restraint system man-
ufacturer' si nstallation and operating instruc-
tions.
Forward-facing child restraint system If you secur eac hild in af orward-facin gc hild
restraint system on the front-passenge rs eat,
always move the front-passenge rs eat as far
back as possible .T he entire base of the child
restraint system must always rest on the seat
cushio noft he front-passenge rs eat. The back-
rest of the child restraint system must lie as flat
as possible against the backrest of the front-
passenger seat. The child restraint system must
not touc ht he roof or be subjected to al oad by
the head restraint .A djust the angle of the seat
backrest and the head restraint position accord-
ingly. Always make sure that the shoulder belt
strap is correctly routed fro mt he front-
passenger seat belt loop to the shoulder belt
guide on the child restraint system. The shoul-
der belt strap must be routed forwards and
downwards fro mt he front-passenge rs eat belt
loop.
Always observe the child restraint system man-
ufacturer' si nstallation and operating instruc-
tions. Pets in th ev ehicle
G WARNING
If you leave animals unattended or unsecured
in the vehicle, the yc ould press buttons or
switches, for example.
As ar esult ,t he yc ould: R
activat ev ehicle equipmen ta nd become
trapped, for example R
activat eord eactivat es ystems, thereby
endangerin go ther road users
Unsecure da nimals could also be flung around
the vehicle in the even tofana ccident or sud-
den steerin gorb raking, thereby injuring vehi-
cle occupants. There is ar isk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secur ea nimals properly during
the journey, e.g. use as uitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems In this section, you will fin di nformation about
the followin gd rivin gs afet ys ystems:R
AB S( A nti-lock B raking S ystem)
( Y
page 55) R
BA S( B rake A ssist S ystem) ( Y
page 55)R
Activ eB rak eA ssist ( Y
page 56)R
ESP ®
( E lectronic S tability P rogram)
( Y
page 58) R
EB D( E lectronic B ra ke force D istribution)
( Y
page 61) R
ADAPTIVE BRAKE ( Y
page 61)
Important safety notes
If you fail to adapt your drivin gs tyle or if you are
inattentive, the drivin gs afet ys ystems can nei-
the rr educ et he risk of an accident nor override
the laws of physics .D ri vin gs afet ys ystems are
merely aids designed to assist driving. You are
responsible for maintainin gt he distanc etot he
vehicle in front ,f or vehicle speed, for braking in54
Driving safety systems
Safety

SmartKey
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could: R
open the doors, thus endangering other
people or road users. R
get out and disrupt traffic. R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake. R
shifting the automatic transmission out of
park position PR
Start the engine.
There is ar isk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
G WARNING
If you attach heavy or large object stot he
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a
risk of an accident.
Do not attach any heavy or large object stot he
SmartKey. Remove any bulky key rings before
insertin gt he SmartKey into the ignition lock.
! Keep the SmartKey away from stron gm ag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey: R
with electronic devices, e.g. am obile phone
or another SmartKey. R
with metallic objects, e.g. coins or metal foil. R
inside metallic objects, e.g. am etal case.
This can affect the functionality of the Smart-
Key. SmartKey functions
C
7 Locks the vehicleD
T Unlock st he trunk lid