MERCEDES-BENZ SLC 2017 Repair Manual

If ESP ®
intervenes, the

Deactivating/activating ESP (SLC 43 ®
AMG )Important safet yn otes
i Observ et he "Important safet yn otes "s ec -
tion ( Y
page 54).
You can selec tb etween th ef ol lowin gs tate so f
ES P ®
:R
ES P ®
is activated.R
SPORT handlin gm od eisa ctivated.R
ES P ®
is deactivated.
G WARNING
Whe nS PO RT handlin gm od eisa ctivated,
there is ag re ater ris kofs ki dding and acci-
dents .
Only activat eS PO RT handlin gm od eint he sit -
uation sd escribed in th ef ol lowing.
G WARNING
If you deactivat eE SP ®
,E SP ®
no longer sta-
bilizes th ev ehicle. There is an increase dr is k
of skidding and an accident.
Only deactivat eE SP ®
in th es ituation sd escri-
bed in th ef ol lowing.
In th ef ol lowin gs ituations, it may be bette rt o
activat eS PO RT handlin gm od eord eactivat e
ES P ®
:R
when usin gs no wc ha in sR
in dee ps no wR
on san dorg ra ve lR
on specially designated roads when th ev ehi-
cle's own oversteering and understeering
characteristics are desire d
Spinning th ew heels result sinac utting action
whic hp rovides bette rg ri p.
Driving in SPORT handlin gm od eorw ithout
ES P ®
require sane xtremel yq ualified and expe-
rienced driver .
i Activat eE SP ®
as soo nast he situation s
described abov enol onger apply .E SP ®
will
otherwise no tbea ble to stabilize th ev ehicle if
th ev ehicle start stos ki doraw hee ls ta rt st o
spin. ! Avoid spinnin gt he driven wheels fo ra n
extended period wit hE SP ®
deactivated. You
could otherwise damage th ed rivetrain .
Deactivating/activating ESP ®
X
To activate SPORT handling mode: briefly
press butto n C .
The t SPORT handlin gm od ew arnin g
lamp in th ei nstrument cluster lights up. The
SPORT handling mod e
messag ea ppears in
th em ultifunction display. X
To deactivate SPORT handling mode:
briefly press butto n C .
The t SPORT handlin gm od ew arnin g
lamp in th ei nstrument cluster goe so ut .X
To deactivate ESP ®
: press butto n C until
th e

R
Engine torque is no longe rl im ite da nd the
drive wheels ar ea bl etos pi n.R
ESP ®
still provides support when yo ub rake
firmly.
Characteristics when ESP ®
is deactivatedIf ESP ®
is deactivated and one or mor ew heel s
start to spin, the

X
To arm: lock the vehicl ew it ht he SmartKey or
KEYLESS-GO.
Indicato rl am p C flashes. The alarm system
is armed afte ra pp roximatel y1 5s econds.X
To disarm: unlock the vehicl ew it ht he Smart-
Key or KEYLESS-GO.
Av isua la nd audibl ea la rm is triggered if the
alarm system is armed and yo uo pe n:R
ad oo rR
the vehicl ew it ht he mechanical keyR
the trunk lid R
the hood R
the glove box R
the stowag es pace under the armrestX
To turn the alarm off with the SmartKey:
press the 6 or 7 button on the Smart-
Key.
The alarm is switched off.
or X
Insert the SmartKey into the ignition lock.
The alarm is switched off. X
To sto pt he alarm using KEYLESS-GO:
grasp the outsid ed oo rh an dle. The SmartKey
must be outsid et he vehicle.
The alarm is switched off.
or X
Press the Start/Stop button on the dash-
board .T he SmartKey must be insid et he vehi-
cle.
The alarm is switched off.
The alarm is not switched off, eve nify ou close
the open door tha tt riggered it, for example.
i If the alarm continue sf or more than
30 seconds ,t he mbrace emergency cal ls ys -
tem automaticall yn otifie st he Customer
Assistance Center. Thi sisd on ee it her by text
message or data connection. The emergency
cal ls ys tem send st he message or data provi-
de dt hat: R
yo uh av es ub scribed to the mbrace service.R
the mbrace service ha sb ee na ctivated
properly. R
the necessary mobil ep hone network is
available.62
Protectio na gains tt heft
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

Locking/unlockin gc entrallyYou can start ,l oc koru nlock th ev ehicle using
KEYLESS-GO .Todot hi s, you onl yn ee dc arry the
SmartKey with you. You can combine th ef unc-
tions of KEYLESS-GO with those of ac onven-
tional SmartKey. Unloc kt he vehicle by using
KEYLESS-GO ,f or instance, and loc kitu sin gt he
7 button on th eS ma rtKey.
The driver' sd oor and th ed oor at whic ht he han-
dle is used, must bot hbec losed. The SmartKey
must be outside th ev ehicle .W hen locking or
unlocking with KEYLESS-GO ,t he distance
between th ek ey and th ec orresponding door
handle must not be greater than 3ft(1m ).
Ac heck whic hp eriodicall ye stablishe sar adio
connectio nb etween th ev ehicle and th eS ma rt-
Key determine sw hether av alid SmartKey is in
th ev ehicle .T his occurs, for example:R
when starting th ee ngineR
while driving R
when th ee xternal door handles are touched
X
To unlock th ev ehicle: touch th ei nner sur-
fac eoft he door handle.X
To lock th ev ehicle: touch sensor surface C
or D .
Mak es ure that you do not touch th ei nner
surface of th ed oor handle.X
Convenience closing feature: touch
recesse ds ensor surface D for an extended
period.
Further informatio nont he convenience clos-
ing feature ( Y
page 74).
Deactivating and activating
If you do not intend to use aS ma rtKey for an
extended perio doft ime, you can deactivate the
KEYLESS-GO function of th ek ey. The SmartKey
will then use ver yl ittle power ,t he reb yc onserv- ing battery power .F or th ep urposes of activa-
tion/deactivation, th ev ehicle must not be
nearby. X
To deactivate: pres st he 7 button on the
SmartKey twic einr apid succession.
The battery check lamp ( Y
page 66 )oft he
SmartKey flashes twic eb riefly and light su p
once, then KEYLESS-GO is deactivated. X
To activate: pres sa ny button on th eS ma rt-
Key.
or X
Inser tt he SmartKey int ot he ignitio nl ock.
KEYLESS-GO and all of its associate df eatures
are available again.
Changing th es ettings of th el ocking
system You can change th es ettings of th el ockin gs ys-
tem .T his mean so nl yt he driver' sd oor ,t he lock-
able stowage compartments in th ev ehicle inte-
rior and th ef uel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone. X
To change th es etting: pres sa nd hold down
the 6 and 7 buttons simultaneously
for about six second su ntil th eb attery indica-
to rl amp ( Y
page 66 )f lashes twice.
If th es ettin goft he lockin gs ystem is changed
within th es ignal range of th ev ehicle ,p ressing
the 7 or 6 button: R
locks or R
unlock st he vehicle
The SmartKey now function sasf ollows:X
To unlock: pres st he 6 button once.X
To unlock centrally: pres st he 6 button
twice. X
To lock centrally: pres st he 7 button.
The KEYLESS-GO function is changed as fol-
lows: X
To unlock th ed ri ver's door: touch th ei nner
surface of th ed oor handle on th ed river's
door. X
To unlock centrally: touch th ei nner surface
of th ed river or front-passenger door handle. X
To lock centrally: touch th eo uter sensor
surface on one of th ed oor handles.64
SmartKey
Opening and closing

X
To restore the factory settings: press and
hol dd ow nt he 6 and 7 buttons simul-
taneousl yf or approximatel ys ix seconds until
the battery check lamp ( Y
page 66 )f lashes
twice.
Mechanical key
General notes If the vehicl ec an no longer be locked or
unlocke dw it ht he SmartKey or with KEYLESS-
GO ,u se the mechanical key.
If yo uu se the mechanical key to unlock and
open the driver's door or the trunk lid, the anti-
thef ta la rm system will be triggered .S witch off
the alarm ( Y
page 61).
Removing the mechanical key
X
Push release catch C in the direction of the
arrow and at the same time remove mechan-
ica lk ey D from the SmartKey.
For further informatio na bout :R
unlocking the driver's door ( Y
page 70)R
unlocking the trunk ( Y
page 71)R
locking the vehicl e( Y
page 70)
Insertin gt he mechanical keyX
Push mechanical key D completel yi nto the
SmartKey unti lite ngages and release
catch C is back in its basi cp osition. SmartKey battery
Important safety notes
G WARNING
Batterie sc ontain toxi ca nd corrosive substan-
ces. If batteries are swallowed, it can resul ti n
severe health problems .T here is ar is koff atal
injury.
Kee pb at teries ou toft he reach of children. If
ab at tery is swallowed, see km edica la ttention
immediately.
H Environmental note
Batterie sc ontain dangerous
substances. It is against the
la wtod is pose of them with
the househol dr ubbish .T hey
must be collected separately
and recycle dtop rotect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to aq uali fied spe-
cialist workshop or as pecial
collectio np oi nt for used bat-
teries.
The SmartKey batteries contain perchlorate
material ,w hi ch ma yr equire specia lh an dling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia ,s ee www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Mercedes-Benz recommends tha ty ou have the
batteries replaced at aq uali fied specialist work-
shop. SmartKey 65
Opening and closing Z

Checking th eb atteryX
Press the 7 or 6 button.
The battery is working properl yifb attery
check lamp C light supb riefly.
The battery is discharged if battery check
lamp C does no tl ight up briefly.X
Change th eb attery ( Y
page 66).
If th eS ma rtKey battery is checked within the
signal reception range of th ev ehicle ,p ressing
the 7 or 6 button:R
locks or R
unlock st he vehicle
i You can get ab attery at any qualified spe-
cialist workshop.
Replacin gt he batteryYou require aCR2 02 53V cel lb attery.X
Tak et he mechanical ke yo ut of th eS ma rtKey
( Y
page 65).
X
Press mechanical key D int ot he SmartKey
opening in th ed irection of th ea rrow until bat-
tery compartmen tc over C opens. Do not
hold battery compartmen tc over C closed
while doin gs o.X
Remove battery compartmen tc over C . X
Repeatedly tap th eS ma rtKey against your
palm until battery

Problems with the SmartKey Problem
Possible causes/consequences and P Solutions
You can no longer lock or
unlock the vehicle using
the SmartKey. The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 66) and replace it if necessary
( Y
page 66).
If this does not work: X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key.
There is interference from ap owerful source of radio waves.X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key.
The SmartKey is faulty. X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key. X
Have the SmartKey checked at aq ualified specialist workshop.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO was deactivated. X
Reactivate KEYLESS-GO ( Y
page 63).
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 66) and replace it if necessary
( Y
page 66).
If this does not work: X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key.
There is interference from ap owerful source of radio waves.X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning. X
Lock/unlock the vehicle using the remote control function of the
SmartKey. X
Have the vehicle and SmartKey checked at aq ualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function: X
Unlock ( Y
page 70) or lock ( Y
page 70) the vehicle using the
mechanical key. X
Have the vehicle and SmartKey checked at aq ualified specialist
workshop. SmartKey 67
Opening and closing Z

Problem
Possible causes/consequences and P Solutions
The engine cannot be
started using the Smart-
Key. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary ( Y
page 248).
or X
Jump-start the vehicle ( Y
page 249).
or X
Consult aq ualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. The vehicle is locked. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 66) and replace it if necessary
( Y
page 66).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from ap owerful source of radio waves.X
Start your vehicle with the SmartKey in the ignition lock.
You have lost aS mart-
Key. X
Have the SmartKey deactivated at aq ualified specialist workshop.X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
Doors
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 P R
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.68
Doors
Opening and closing