2018 MERCEDES-BENZ SL CLASS start stop button

Where possible, avoid spinnin gt he drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
Key positions
SmartKey
Z
To remove the SmartKeyG
Power supply for some consumers, such as
the windshield wipersH
Ignition (power supply for all consumers)
and drive positionI
To start the engine
i The SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
KEYLESS-GO
General notes Vehicles with KEYLESS-GO are equipped with a
SmartKey featuring an integrated KEYLESS-GO
start function and ad etachable Start/Stop but-
ton.
The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the differen tk ey
positions in the ignition lock. This is only the
case if you are not depressing the brake pedal. If you depress the brake pedal and press the
Start/Stop button ,t he engine start si mmedi-
ately.
Ac heck which periodically establishes ar adio
connection between the vehicle and the Smart-
Key determines whether av alid SmartKey is in
the vehicle. This occurs ,f or example, when
starting the engine.
To start the vehicle without actively using the
SmartKey: R
the Start/Stop button must be inserted in the
ignition lock. R
the SmartKey must be in the vehicle. R
the vehicle must not be locked with the
SmartKey or KEYLESS-GO ( Y
page 65).
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 impair the functionality of the KEY-
LESS-GO key.
If you lock the vehicle with the SmartKey's
remot ec ontrol or with KEYLESS-GO, after a
short time: R
you will not be able to switch on the ignition
with the Start/Stop button. R
you will not be able to start the engine with the
Start/Stop button until the vehicle is
unlocked again.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with KEYLESS-GO
C
Start/Stop button
D
Ignition lock116
Driving
Driving and parking

As soo na st he ignition is switched on, al lt he
indicator lamps in the instrument cluster light
up .F urther informatio nons it uations where an
indicator lamp either fails to go ou ta fte rs tarting
the engine or lights up whil ed riving
( Y
page 204).
If Start/Stop button C ha sn ot ye tb ee n
pressed, thi sc orrespond stot he key being
remove df rom the ignition.X
To switc hont he power supply: press
Start/Stop button C once.
The powe rs uppl yiss wi tched on. Yo uc an now
activate the windshield wipers, for example.
The powe rs uppl yiss wi tched off agai ni f:R
the driver's door is opene da ndR
yo up ress Start/Stop button C twice when
in thi sp ositionX
To switc hont he ignition: press Start/Stop
button C twice.
The ignition is switched on.
If yo up ress Start/Stop button C once when
in thi sp osit ion, the ignition is switched off
again.
Removing the Start/Sto pb uttonYo uc an remove the Start/Stop button from the
ignition lock and start the vehicl easn ormal
using the SmartKey. X
Remove Start/Stop button C from ignition
lock D .
Yo udon ot have to remove the Start/Stop but-
ton from the ignition lock when yo ul eave the
vehicle. Yo us hould, however, always take the
SmartKe yw it hy ou when leaving the vehicle. As
long as the Sma rtKe y isint h
e vehicle:R
the vehicl ec an be started using the Start/
Stop button R
the electrically powered equipment can be
operated
Starting the engine
Important safety notes
G WARNING
If children ar el ef tu nsupervised in the vehicle,
they could: R
operate the vehicle's equipment. Additionally, children could set the vehicl ei n
motion if, for example, they: R
release the parking brake R
shift the automatic transmission ou tofp ar k
position P R
start the engine
There is ar is kofana ccident and injury.
Never leav ec hildren or animals unattended in
the vehicle.
Whe nl eavi ng the vehicle, always take the
SmartKe yw it hy ou and lock the vehicle. This
also applie stom obil ep hones if the "Digital
Ca rK ey in smartphone "f un ctio ni sa ctivated
via the Mercedes me connect we ba pp .
G WARNING
Combustion engine se mi tp oiso nou se xhaust
gases such as carbo nm onoxide. Inhaling
thes ee xhaus tg as es lead stop oiso ning. There
is ar is koff ata li njury .T herefore neve rl eave
the engine running in enclose ds paces with-
ou ts uf ficient ventilation.
G WARNING
Flammabl em at erial si ntroduced through
environmenta li nfluence or by animals can
ignite if in contact with the exhaus ts ys tem or
parts of the engine tha th ea tu p. There is ar isk
of fire.
Carry ou tr egular checks to make sure that
ther ea re no flammabl ef oreig nm at erial si n
the engine compartment or in the exhaust
system.
During ac ol ds tart, the engine runs at higher
speed stoe nabl et he catalytic converter to
reach its operating temperature .T he sound of
the engine ma yc hange during thi st ime.
Automati ct ransmission X
Depres st he brake peda la nd kee pi t
depressed. X
Shift the transmission to position ] .
Transmission positio nd is play ] is shown in
the multifunctio nd is play.Driving 117
Driving an dp arking Z

i You can star tt he engin eint ra nsmission
position ] and \\ .
Starting procedur ew ith th eS martKeyTo star tt he engin eu sing the SmartKey instead
of KEYLESS-GO, pull the Start/Stop button out
of the ignition lock. X
Turn the SmartKey to position I in the igni-
tion lock ( Y
page 116 )a nd release it as soon
as the engin eisr unning.
Using KEYLESS-GO to start th ee ngineThe Start/Stop button can be used to star tt he
vehicle manually without insertin gt he SmartKey
int ot he ignition lock .T he Start/Stop button
must be inserted in the ignition lock and the
SmartKey must be in the vehicle. This mode for
startin gt he engin eo perates independently of
the ECO start/sto pa utomatic engin es tar tf unc-
tion. X
Depress the brak ep edal and keep it
depressed. X
Press the Start/Stop button once
( Y
page 116).
The engin es tarts.
Pulling away
Genera ln otes
G WARNING
If the engin es peed is above the idling speed
and you engage transmission position D or R ,
the vehicle could pull away suddenly. There is
ar isk of an accident.
When engagin gt ra nsmission position D or R ,
always firmly depres st he brak ep edal and do
not simultaneously accelerate.
! Change gear in good tim ea nd avoid spin-
nin gt he wheels. You could otherwise damage
the vehicle.
Depress the accelerator carefully when pulling
away.
The vehicle lock sc entrally onc ey ou have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the inside at any
time. You can also deactivate the automatic locking
feature ( Y
page 173).
It is only possible to shift the transmission from
position ] to the desired position if you
depres st he brak ep edal. Only the nist he shift
lock released.
i Upshifts tak ep lace at higher engin es peeds
afte rac old start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brak e( Y
page 133).
Hill start assist Hill star ta ssist helps you when pulling away
forwar dorinr everse on an uphill gradient. It
holds the vehicle for as hor tt im ea fte ry ou have
removed your foot from the brak ep edal. This
gives you enough tim etom ove your foot from
the brak ep edal to the accelerator pedal and to
depres sitb efor et he vehicle begins to roll.
G WARNING
After as hor tt ime, hill star ta ssist will no lon-
ger brak ey our vehicle and it could roll away.
There is ar isk of an accident and injury.
Therefore, quickly move your foot from the
brak ep edal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill star ta ssist is not active if: R
you are pulling away on al evel road or on a
downhill gradient R
the transmission is in position \\R
the electric parking brak eisa ppliedR
ESP ®
is malfunctioning
ECO start/stop function
Introduction
The ECO start/sto pf unction switches the
engin eo ff automatically if the vehicle is stopped
under certain conditions.
The engin es tarts automatically when the driver
want stop ull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle.118
Driving
Driving and parking

Problem
Possible causes/consequences and P Solutions
The engine is not running
smoothly and is misfir-
ing. There is am alfunction in the engine electronics or in am echanical
componen toft he engine management system.X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. X
Have the cause rectified immediately at aq ualified specialist work-
shop.
The coolant temperature
gauge shows av alue
above 248 ‡( 120 †).
The coolant warning
lamp may also be on and
aw arning tone may
sound. The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 235). Observe the warning notes
as you do so and add coolant if necessary.
If the coolant level is correct ,t he engine radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled sufficiently. X
At coolant temperatures below 248 ‡( 120 †), drive to the nearest
qualified specialist workshop. X
Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainou st errai na nd stop-and-go traffic.
DYNAMIC SELEC Tb uttonUse the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
wil lc hange: R
the drive (engine and transmission manage-
ment) R
the suspensio nort he adaptive adjustable
damping (only on vehicles with AMG RIDE
CONTROL sports suspension) R
the sound of the exhaust system (vehicles
with sports exhaust system) R
the steering R
the availability of the ECO start/stop function
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program C is
activated. For further information about starting
the engine, see ( Y
pag e1 17). X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
progra miss elected.
The selected drive progra ma ppears in the
multifunction display. After as hort period of
time, the displa yg oes out and the symbol for
the selected drive progra ma ppears.
In addition, the current drive progra ms ettings
are displayed briefly in the multimedi as ystem
display.
i In af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade. In this case, the ECO
start/stop function is not available in anyDYNAMI CS ELEC Tb utton 121
Driving and parking Z

The current transmission position and drive pro-
gram appear in the multifunction display.
Mercedes-AMG SLC 43
C
Transmission positionD
Drive program
The current transmission position and drive pro-
gram appear in the multifunction display.
Engaging par kp osition P
X
When the vehicle is stationary, depress the
brake pedal. X
Press button C .
Engaging par kp osition Pa utomaticallyPark position ] is automatically engaged if:R
you switch off the engine using the SmartKey
and remove the SmartKey R
you switch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door R
you open the driver's door when the vehicle is
stationary or when driving at av ery low speed
and the transmission is in position [ or ^
Under certain conditions, the automatic trans-
mission shifts automatically to transmission
position ] if the HOLD function or Distance
Pilot DISTRONIC is activated. Observe the infor-
mation on the HOLD function ( Y
page 148) and
on Distance Pilot DISTRONIC ( Y
page 144). Engaging reverse gear R
! Only move the automatic transmission to
^ when the vehicle is stationary. X
Depress the brake and keep it pressed. X
Push the selector lever forwards past the first
point of resistance.
The ECO start/sto pf unction is not available
when reverse gear is engaged. Further informa-
tion on the ECO start/sto pf unction
( Y
page 119).
Shifting to neutral N
G WARNING
If children are left unsupervised in the vehicle,
they could: R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake R
shift the automatic transmission out of park
position P R
start the engine
There is ar isk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
When leaving the vehicle, alway st ake the
SmartKey with you and lock the vehicle. This
also applies to mobile phones if the "Digital
Car Key in smartphone" function is activated
via the Mercedes me connect web app. X
When the vehicle is stationary, depress the
brake pedal. X
Push the selector lever forwards or back to
the first point of resistance.
If you switch the engine off with the transmis-
sion in position ^ or [ ,t he automatic trans-
mission shifts to \\ automatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove
the SmartKey from the ignition, the automatic
transmission shifts to ] automatically.
With KEYLESS-GO: if you then open the driver's
or front-passenger door, the automatic trans-
mission shifts to ] automatically.Automatic transmission 123
Driving and parking Z

If you want the automatic transmission to
remain in neutral \\ ,e .g. when having the vehi-
cle cleaned in an automatic car wash with a
towing system: X
Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock. X
Insert the SmartKey into the ignition lock. X
All vehicles: switch the ignition on.X
Depress the brake peda la nd keep it
depressed. X
Engage neutral \\ .X
Release the brake pedal. X
Release the electric parking brake. X
Switch off the ignition and leave the SmartKey
in the ignition lock.
Engaging drive positio nDX
When the vehicle is stationary ,d epres st he
brake pedal. X
Push the selector lever back past the first
point of resistance. Transmission positions E Park position
This prevents the vehicle from rolling
awa yw hen stopped.
Only shift the transmission into posi-
tion E ( Y
page 122) when the
vehicle is stationary .T he parking lock
shoul dn ot be used as ab rake when
parking. Alway sa ppl yt he electronic
parking brake in addition to the park-
ing lock in order to secure the vehi-
cle.
If the SmartKey is removed from the
ignition lock, the transmission is
locked.
The automatic transmission shifts to
E automatically: R
when the SmartKey is removed
from the ignition lock R
when the engine is switched off
with the transmission in position
F or : and one of the doors
is opened
In the event of am alfunction of the
vehicle's electronics, the transmis-
sion may lock in position E .H ave
the vehicle electronics checked
immediately at aq ualifie ds pecialist
workshop.
F Reverse gear
Only shift the transmission into posi-
tion F when the vehicle is sta-
tionary.124
Automatic transmission
Driving and parking

When the HOLD function is activated, the trans-
mission is automatically shifted to position ]
if: R
the driver's seat belt is not fastened and the
driver's door is open. R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
The electric parking brake secures the vehicle
automatically if the HOLD function is activated
when the vehicle is stationary and: R
as ystem malfunction occurs. R
the power supply is not sufficient.
If am alfunction in the electric parking brake
occurs ,t he transmission may also be shifted
into position ] automatically.
Adaptive damping system
General notes
i Mercedes-AMG SLC 43: the adaptive
damping system is called AMG RIDE CON-
TROL sports suspension.
As uspension with the adaptive damping system
provides improved driving comfort and contin-
uously controls the calibration of the dampers.
The damping characteristic sa dapt to the cur-
rent operating and driving situation.
The damping is tuned individually to each wheel
and depends on: R
your driving style, e.g. sporty R
the road surface conditions R
the selected drive program ( Y
page 121).
Selecting the Comfort or Economy drive
programs In the Comfort and Economy drive programs,
the driving characteristic sofy our vehicle are
more comfortable. Select one of these drive
programs if you favor am ore comfortable driv-
ing style. Also select these drive programs when
driving fast on straight roads, e.g. on straight
stretches of highway.
In urban traffic and stop-start traffic, drive pro-
gram C is recommended. X
Press DYNAMIC SELECT button C repeat-
edly until the Comfort or Economy drive pro-
gram is selected.
Selecting Sport mode The firmer setting of the suspension tunin gi n
the Sport drive program ensures even better
contact with the road. Select this drive program
when employing as porty driving style, e.g. on
winding country roads. X
Press DYNAMIC SELECT button C as many
times as necessary until the Sport drive pro-
gram is selected.
Selecting Sport Plus mode The firmer suspension settings in the Sport
Plus drive program ensure even better contact
with the road. Select this mode when employing
as porty driving style, e.g. on winding country
roads or, ideally ,w hen driving on closed race
circuits. X
Press DYNAMIC SELECT button C repeat-
edly until the Sport Plus drive program is
selected.
Parking Assist PARKTRONIC
Important safety notes Parking Assist PARKTRONIC is an electronic
parking aid with ultrasound. It monitors the area
around your vehicle using six sensor sint he
fron tb umper and four sensor sint he rear
bumper. Parking Assist PARKTRONIC visually
and audibly indicates the distanc eb etween your
vehicle and an object.
Parking Assist PARKTRONIC is only an aid. It is
not ar eplacemen tf or your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking and
exitin gap arking space. Make sure that thereDriving systems 149
Driving and parking Z

Workin gint he engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the component sd escribed in the
following.
G WARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is ar isk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
Example X
Park the vehicle on al evel surface.
Only check the coolant level when the vehicle
is on al evel surface and the engine has cooled
down. X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 116).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice ( Y
page 116).X
Check the coolant temperature gage in the
multifunction display.
The coolant temperature must be below
158 ‡( 70 †).X
Turn the SmartKey to position