seat adjustment MERCEDES-BENZ SLC-Class 2017 R172 Owner's Manual

see also Digital Operator's Man-
ual .................................................. 211
Selecting ........................................169
Search&S end
see also Digita lOperator's Man-
ua l..................................................2 11
Seat belts
Adjusting the driver's and front-
passenger seatb elt......................... 41
Correct usag e.................................. 40
Fastening ......................................... 40
Important safety guideline s............. 39
Introduction ..................................... 38
Releasing ......................................... 41
Switching belt adjustment on/off
(on-board computer) ...................... 174
Warning lamp ................................. 203
Warning lamp (function) ................... 41
Seats
Adjusting (electrically) ..................... 84
Adjusting (manually) ........................ 84
Adjusting the 4-wa ylum bars up-
por t.................................................. 84
Adjusting the hea drestraint ............ 84
Correct driver' sseatp osition ........... 82
Important safety notes .................... 82
Overview .......................................... 82
Seath eating problem ...................... 85
Storing settings (memory func-
tion) ................................................. 91
Switching AIRSCAR Fon/of f............ 85
Switching sea theating on/of f......... 85
Selecto rlever
Positions ........................................ 122
Sensors (cleaning instructions) ....... 240
Servic emenu( on-board com-
puter) .................................................. 172
Servic emessage
see ASSYST PLUS
Servic eproducts
Brake fluid ..................................... 287
Coolant (engine) ............................ 287
Engine oil. ...................................... 286
Fue l................................................ 285
Important safety notes .................. 284
Refrigerant (air-conditioning sys-
tem) ............................................... 288
Washe rfluid ................................... 288 Setting the air distribution
............... 109
Setting the airflow ............................ 109
Setting the date/time format
see also Digital Operator's Man-
ual.................................................. 211
Setting the language
see al so Di
gital Operator's Man-
ua l.................................................. 211
Setting the time
see also Digital Operator's Man-
ual.................................................. 211
Settings
Factory (on-board computer) ......... 175
On-board compute r....................... 172
SETUP (on-board computer) ............. 175
Side impac tair bag ............................. 43
Side marker lamp
Changing bulb s(rear) ....................... 99
Side marker lamp (display mes-
sage) ................................................... 189
Side windows
Cleaning ......................................... 239
Convenience closing feature ............ 74
Important safety information ........... 72
Opening/closing (all )....................... 73
Opening/closing (front) ................... 73
Overview .......................................... 72
Problem (malfunction) ..................... 75
Resetting ......................................... 74
Reversing feature ............................. 72
SIRIU Sservices
see also Digital Operator's Man-
ua l.................................................. 211
SmartKey
Changing the battery ....................... 66
Changing the programming ............. 64
Checking the battery ....................... 66
Displa ymessage ............................ 201
Door centra lloc king/unlocking ....... 63
Important safety notes .................... 63
Loss. ................................................ 67
Mechanical key ................................ 65
Opening/closing the roo f................ 77
Overview .......................................... 63
Positions (ignition lock) ................. 115
Problem (malfunction) ..................... 67
Starting the engine ........................ 117
Index15

Basicillust ration
XAdjus tthe sea t(Ypage 82).
The sea tbackrest mus tbeinana lmost ver-
tical position.
XPull the sea tbelts moothly outofb eltl oop =
and engage bel ttongue ;into belt
buckle :.
The sea tbeltont he driver’ sseata nd the
front-passenger sea tmay be tightened auto-
matically ,see "Belt adjustment"
(
Ypage 41).
XIf necessary ,pullu pward sonthe shoulder
section of the sea tbelttot ighten the belt
across your body.
In orde rtoattach the chil drestraint system
securelyint he vehicle, the sea tbeltont he front-
passenger sea tisequipped with aspecia lseat
bel tretractor. Furthe rinformation on the "Spe-
cia lsea tb eltr etractor" (
Ypage 52).
Releasing seat belts
!Make sur ethat the sea tbeltisf ully rolled up.
Otherwise ,the sea tbeltorb eltt onguew illb e
trapped in the doo rorinthe seatmechanism.
Thisc ouldd amaget he door, the doo rtrim
panel and the sea tbelt. Damaged sea tbelts
can no longer fulfil lthei rprotective function
and mus tbereplaced. Visit aquali fied spe-
cialist workshop.
XPres sthe release button in the bel tbuckle,
hol dthe bel ttonguef irmlyand guide the belt
back.
Sea tbelta djustment
Mercedes-Ben zSLC 43 AMG: the seatbelt
adjustment function is not available.
The seat-bel tadjustment is an integral part of
the PRE-SAFE
®convenience function. Thisf unc-
tion adjusts the driver's and front-passenger
sea tbelttot he upper bod yofthe occupants.
The bel tstrap is tightened slightlyw hen:
Rthe belttongueise ngaged in the buckle and
Rthe ignition is switched on
The seat-bel tadjustment will apply acertain
retraction force if any slack is detected between
the vehicle occupant and the sea tbelt. Do not
hol dontot he seatbeltt ightly while it is adjust-
ing.
You can switch the seat-bel tadjustment on and
off in the on-board computer (
Ypage 174).
Beltw arning for the drive rand front
passenger
The 7 seatbeltw arning lamp in the instru-
ment cluster is areminder that al lvehicle occu-
pants mus twearthei rseatb elts. It may light up
continuously or flash. In addition, there may be
aw arning tone.
Regardless of whether the driver's sea tbelth as
already bee nfastened, the 7seatbeltw arn-
ing lamp lights up for six seconds each time the engine is started. If, afte rsix seconds ,the driver
or front-passenger sea tbelth as not bee nfas-
tened and the doors are closed, the 7seat
bel twarning lamp lights up .Assoon as the driv-
er's and front-passenger sea tbelts are fastened
or afront doo risopened again, the 7seat
bel tw arning lamp goeso ut.
If the driver's sea tbeltisn ot fastened afte rthe
engine is started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once the driver's sea tbeltisf as-
tened.
If the vehicle' sspeed exceeds 15 mph
(25 km/h )once and the driver's and front-
passenger sea tbelts are not fastened, awarning
tone sounds. Awarning tone also sounds with
increasing intensity for 60 seconds or until the
driver or front passenger hav efastened their
sea tbelts.
If the driver or front passenger unfasten their
sea tbelts during the journey,t he seatbeltw arn-
ing is activated again.
Occupan tsafety41
Safety
Z

Problems with the Occupant Classification System (OCS)
Be sure to observe the notes on "System self-test"(Ypage 47).
ProblemPossible causes/consequences andMSolutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult oraper-
son of astature corre-
sponding to that of an
adult.The classification of the person on the front-passenger seat is incor-
rect.
XMake sure the conditionsf orac orrect classification of the person
on the front-passenger seat are met (Ypage 44).
XIf the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used.
XHave 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:
Runoccupied
Roccupied with the
weight of achild up to
twelve months old in a
child restraint system
OCS is malfunctioning.
XMake sure there is nothin gbetween the seat cushion and the child
seat.
XMake 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.
XWhen 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 .This could result in the seat belt and the child
restraint system being pulled too tightly.
XCheck for correct installation of the child restraint system.
Make sure that the head restraint does not apply aload to the child
restraint system. If necessary, adjust the head restraint accord-
ingly.
XMake sure that no object sare applying additional weight onto the
seat.
XIf 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.
XHave OCS checked as soon as possible at an authorized Mercedes-
Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag has
been deployed. There is arisk of injury.
Do not touch the air bag parts. Have a
deploye dair bag replaced at aqualified spe-
cialist workshop as soon as possible.
GWARNING
Ad eployeda 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 aqualified special-
ist workshop in order to have adeployeda ir
bag replaced.
For your own safety and that of your front
passenger, it is important that you have
48Occupant safety
Safety

Adjusting theseats manually
XSea tfore-and-aft adjustment: lift lever:
and slid ethe seat forward sorbackwards .
XReleaselever :again .
Mak esuret haty ou hear th eseat engage in
position .
XTo adjust th ebackres tangle: relievethe
pressur eonthebackrest .
XPull handle ;and mov ebackrest to th e
desired angle.
XReleas ehandle ;again .
The backrest mus taudibly engage .
XTo adjust theseath eight :pull handle =
upwards or push it down repeatedly until th e
seat has reached th edesired height .
Adjusting th eseats electri cally
:Backrest angle
;Seat fore-and-af tadjustmen t
=Seat cushion angle
?Seat height
iYou can store th eseat setting susingthe
memory function (Ypage 91).
Adjusting th eheadr estraints
GWARNIN G
You could lose control of your vehicl eifyou do
th ef ollowin gwhile driving:
Radjust th edriver's seat ,head restraint,
steering whee lormirrors
Rfaste nthe seat belt
There is ariskofana ccident.
Adjus tthe driver's seat ,head restraint, steer -
ing whee land mirror and faste nyour seat belt
before starting th eengine.
XTo raise/lower: push thehead restrain t
upwards or pull it down int othe desired posi-
tion .
Adjusting th e4-wa ylumbar support
:Raises th ebackrest contour
;Soften sthe backrest contour
=Lowers th ebackrest contour
?Harden sthe backrest contour
84Seats
Seats ,steering wheel and mirrors

XPress button:repeatedly until the desired
heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iThe blower continues runnin gfor seven sec-
onds to cool down the heating elements.
iIf the battery voltage is too low, AIRSCARF
may switch off.
Problems with AIRSCARF
AIRSCARF has switched off prematurely or will
not switch on. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
XSwitc hoff electrical consumers that you do
not need, such as the rear window defroster
or interior lighting.
XSwitc honA IRSCARF again.
Steering wheel
Important safety notes
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steerin gwheel or mirrors
Rfasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
Children could injure themselves if they
adjust the steerin gwheel. There is arisk of
injury.
When leaving the vehicle, alwayst ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steerin gwheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
GWARNING
If the steerin gwheel is unlocked while the
vehicle is in motion ,itcould change position
unexpectedly. This could cause you to lose
control of the vehicle. There is arisk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;Adjust sthe steerin gwheel height
=Adjust sthe steerin gwheel position (fore-
and-aft adjustment)
XPush release lever :down completely in the
direction of the arrow.
The steerin gcolumn is unlocked.
XAdjust the steerin gwheel to the desired posi-
tion.
XPush release lever :up completely.
The steerin gcolumn is locked.
XCheck if the steerin gcolumn is locked. When
doing so, try to push the steerin gwheel up or
down or try to move it in the fore-and-aft
direction.
86Steering wheel
Seats, steering wheel and mirrors

Adjusting thesteering wheel electri -
cally
:Adjusts th esteering whee lheight
;Adjusts th esteering whee lposition (fore-
and-af tadjustment)
iFurther relate dsubjects :
REASY-ENTRY/EXIT feature (Ypage 87)
RStoring setting s(Ypage 91)
EASY-ENTRY/EX ITfeatu re
Import ant safety notes
GWARNIN G
If you drive off while th eEASY-ENTRY/EXIT
feature is making adjustments ,you could lose
control of th evehicle. There is ariskofa n
accident.
Always wait until th eadjustmen tprocess is
complete before drivin goff.
GWARNIN G
When th eEASY-ENTRY/EXIT feature adjust s
th es teering wheel, you and other vehicl e
occupant s–particularly children –could
become trapped .There is ariskofi njury.
Whil ethe EASY-ENTRY/EXIT feature is mak -
ing adjustments ,makes uret hatnoo nehas
any body part sintheswee poft hesteering
wheel.
If somebod ybecome strapped :
Rpress on eofthememory function position
buttons ,or
Rmov ethe switch for steering whee ladjust -
men tint heopposit edirection to that in
whic hthe steering whee lismoving.
The adjustmen tprocess is stopped.
GWARNIN G
When th eEASY-ENTRY/EXIT feature adjust s
th es teering whee land th edriver's seat ,you
and other vehicl eoccupant s–particularly
children –could become trapped .There is a
ris kofi njury.
Whil ethe EASY-ENTRY/EXIT feature is mak -
ing adjustments ,makes uret hatnoo nehas
any body part sintheswee poft heseat and
th es teering wheel.
If somebod ybecome strapped :
Rpress on eofthememory function position
buttons ,or
Rpress on eofthememory function memory
buttons ,or
Rmov ethe switch for steering whee ladjust -
men tint heopposit edirection to that in
whic hthe steering whee lismoving
The adjustmen tprocess is stopped.
GWARNIN G
If you use opening sinthebodywork or
detachable part sassteps, you could:
Rslip and/o rfall
Rdamag ethe vehicl eand caus eyourself to
fall.
There is ariskofi njury.
Always use secure climbin gaids, e.g. asuita-
ble ladder.
The EASY-ENTRY/EXIT feature makes getting in
and out of your vehicl eeasier.
You can activat eand deactivat ethe EASY-
ENTRY/EXIT feature in th eon-bo ard computer
(
Ypage 174).
Steering wheel87
Seats ,steering wheel and mirrors
Z

XMake sure that the SmartKey is in position1
or 2in the ignition lock.
XPress button :for the left exterior mirror or
button ;for the right exterior mirror.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected mirror using
adjustment button =as long as the indicator
lamp is lit.
XPress adjustment button =up, down, to the
right or to the left.
The exterior mirror must be set to aposition
that provides you with agood overview of
traffic conditions.
The convex exterior mirrors provide alarger field
of vision.
The exterior mirrors are automatically heated
after startin gthe vehicle if the rear window
defroster is switched on and the outside tem-
perature is low. Mirror heating lasts up to 10
minutes.
iYou can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Folding the exterior mirrors in or out
electrically
XMake sure that the SmartKey is in position 1
or 2in the ignition lock.
XBriefly press button :.
Both exterior mirrors fold in or out.
iMake sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
Folding the exterior mirrors in or out
automatically
If the "Fold in mirrors when locking" function is
activated in the on-board computer
(
Ypage 174):
Rthe exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside.
Rthe exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
iThe exterior mirrors do not fold out if they
have been folded in manually.
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XVehicles without electrically folding exte-
rior mirrors: move the exterior mirror into
the correct position manually.
XVehicles with electrically folding exterior
mirrors: press and hold mirror-folding button
until you hear the mirror click into place
(
Ypage 89).
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(
Ypage 88).
Mirrors89
Seats, steering whee land mirrors
Z

Automa tica nti-glar emirror s
GWARNIN G
Electrolyt emay escape if th eglassinana uto-
matic anti-glare mirror breaks .The electrolyt e
is harmful and causes irritation .Itmustn ot
come int ocontac twithy our skin, eyes ,res -
piratory organs or clothing or be swallowed.
There is ariskofi njury.
If you come int ocontac twitht he electrolyte,
observ ethe following:
RRins eoff th eelectrolyt efromy our skin
immediately wit hwater.
RImmediately rinse th eelectrolyt eout of
your eyes thoroughly wit hclean water.
RIf th eelectrolyt eisswallowed, immediately
rinse your mout hout thoroughly. Do no t
induce vomiting .
RIf electrolytecom es int ocontac twithy our
skin or hair or is swallowed, see kmedical
attention immediately.
RImmediately chang eout of clothing whic h
has come int ocontac twithe lectrolyte.
RIf an allergic reaction occurs, see kmedical
attention immediately.
The rear-view mirror and th eexter iorm irror on
th ed river's side automatically go int oanti-glare
mod eift hefollowin gconditi onsa re met simul-
taneously:
Rth ei gnition is switched on and
Rinciden tligh tfro mh eadlamp sstrikes th esen-
sor in th erear-view mirror
The mirror sdonotgo int oanti-glare mod eif
revers egear is engage doriftheinterior lighti ng
i

s switched on .
Parking position for th eexteri or mir-
ror on thef ront-passenger side
Setting and stori ng theparki ng position
Usin grevers egear
You can store th eparking position of th eexte-
rio rm irror on th efront-pa ssenger side usin g
memory butto nM ?.T he revers egear mus tnot
be engage dduring th eprocess.
XMak esuret hatthe vehicl eisstationary and
that th eSmartKey is in position 2in th eigni-
tion lock.
XPress butto n; for th eexter iorm irror on th e
front-passenger side .
XEngage reversegear .
The exterio rmirror on th efront-pa ssenger
side moves to th epreset parking position .
XUse adjustmentbutto n= to adjust th eexte-
rio rm irror to aposition that allows you to see
th er ear whee land th ecurb.
The parking position is stored.
iIf you shif tthe transmission to another posi-
tion ,the exterio rmirror on th efront -
passenger side return stothedrivin gposition .
Usingthe memory button
90Mirrors
Seats ,steering wheel and mirrors

You can position the front-passenger side exte-
rior mirror in suchaway that you can see the
rear wheel on that side as soon as you engage
reverse gear. This settin gcan be stored using
memory button M?.
XMake sure that the SmartKey is in position 2
in the ignition lock.
XWith the exterior mirror on the front-
passenger side activated, use adjustment
button =to adjust the exterior mirror. In the
exterior mirror, the rear wheel and the curb
should be visible.
XPress memory button M? and one of the
arrows on adjustmentb utton=within three
seconds.
The parking position is stored if the exterior
mirror does not move.
XIf the mirror moveso ut of position, repeat the
steps.
Calling up astored parking position set-
ting
XTurn the SmartKey to position 2in the ignition
lock.
XAdjust the exterior mirror on the front-
passenger side using button ;.
XEngage reverse gear.
The exterior mirror on the front-passenger
side movestothe stored parking position.
The exterior mirror on the front-passenger side
movesb ack to its original position:
Ras soon as you exceed aspeed of 9mph
(15 km/h)
Rif you press button :for the exterior mirror
on the driver's side
Memory function
Storing settings
GWARNING
If you use the memory function on the driver's side while driving, you could lose control of
the vehicle as aresult of the adjustments
being made. There is arisk of an accident.
Only use the memory function on the driver's
side when the vehicle is stationary.
GWARNING
When the memory function adjust sthe seat or
steeringw heel, you and other vehicle occu-
pant s–p articularly children –could become
trapped. There is arisk of injury.
While the memory function is makin gadjust-
ments, make sure that no one has any body
partsint he sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustmentp rocess is stopped.
GWARNING
Children could becom etrapped if the yacti-
vate the memory function ,particularly when
unattended. There is arisk of injury.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The memory function can be used at any time,
e.g. even when the SmartKey isn' tinthe ignition
lock.
With the memory function ,you can store up to
three differents ettings, e.g. for three different
people.
The followings ettings are stored as asingle
memory preset:
Rposition of the seat, backrest and head
restraint
Rdriver's side: steeringw heel position
Rdriver's side: position of the exterior mirrors
on the driver's and front-passenger sides
Memory function91
Seats, steering wheel and mirrors
Z

XPress the=or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Vehiclesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Automatic Door Lockfunction.
When the Automatic Door Lockfunction is
activated, the multifunction display shows the
left-hand vehicle door in orange.
XPress the abutton to save the setting.
For further information on the automatic locking
feature, see (
Ypage 69).
Activating/deactivating the acoustic
locking verification signal
If you switch on the AcousticLockfunction, an
acoustic signal sounds when you lock the vehi-
cle.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Vehiclesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Acoustic Lockfunction.
If the Acoustic Lockfunction is activated,
the & symbol in the multifunction display
lights up orange.
XPress the abutton to save the setting.
Convenience
Activating/deactivating the EASY-
ENTRY/EXITf eature
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steerin gwheel, you and other vehicle
occupants–p articularly children –could
become trapped. There is arisk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
If somebody becomes trapped:
Rpress one of the memory function position
buttons, or
Rmove the switch for steerin gwheel adjust-
ment in the opposite direction to that in
which the steerin gwheel is moving.
The adjustmen tprocess is stopped.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Conveniencesubmenu.
XPress ato confirm.
XUsing :or9,s elect the EasyEntry/Exitfunction.
If the EasyEntry/Exitfunction is activated,
the multifunction display shows the steering
wheel in orange.
XPress the abutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (
Ypage 87).
Switching the belt adjustment on/off
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Conveniencesubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Belt Adjustmentfunction.
When the Belt Adjustmentfunction is acti-
vated, the seat belt is displayed in orange in
the multifunction display.
XPress the abutton to save the setting.
For further information on belt adjustment, see
(
Ypage 41).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only availablew hen the vehicle is
equipped with the electrical fold-in function.
This function is only availableinC anada.
When you activat ethe Auto.
MirrorFoldingfunction, the exterior mirrors are folded in when
the vehicle is locked.
If you have switched on the Auto. Mirror
Foldingfunction and you fold in the exterior
mirrors using the button on the door
(
Ypage 89), they will not fold out automatically.
174Menus and submenus
On-board computer and displays