2018 MERCEDES-BENZ SL ROADSTER stop start

iUpshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake (
Ypage 143).
Hill start assist
Hill start assist helps you when pulling away
forward or in reverse on an uphill gradient. It
holds the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and to
depress it before the vehicle begins to roll.
GWARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling away on a level road or on a
downhill gradient
Rthe transmission is in position i
Rthe electric parking brake is applied
RESP®is malfunctioning
ECO start/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
The engine starts automatically when the driver
wants to pull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle.
Important safety notes
GWARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
:ECO start/stop display
The ECO start/stop function is activated when- ever you switch on the engine using the Smart-
Key or the Start/Stop button.
If the engine has been switched off automati-
cally by the ECO start/stop function, the è
ECO symbol is shown in the multifunction dis-
play.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive program C.
Automatic engine switch-off
If the vehicle is braked to a standstill with the
transmission inhori, the ECO start/stop
function switches off the engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green
Rthe outside temperature is within the range
that is suitable for the system
Rthe engine is at normal operating temperature
Rthe set temperature for the vehicle interior
has been reached
Rthe battery is sufficiently charged
Rthe system detects that the windshield is not
fogged up when the air-conditioning system is switched on
Rthe hood is closed
Rthe driver's door is closed and the driver's
seat belt is fastened
All of the vehicle's systems remain active when
the engine is stopped automatically.
Driving125
Driving and parking
Z

All vehicles (except Mercedes-AMG vehi-
cles):automat icengine switch-off can take
plac e a maximum of four times ina row (initial
stop, then three subsequent stops).
Mercedes-AMG vehicles: the number of con-
secutive automat icengine switch-offs isunlimi-
te d.
The HOLD function can beactivated ifthe
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automat icstop phase. When
you depr ess the accelerator pedal,the engine
starts automatically and the braking effect of
the HOLD function isdeactivate d.
Automatic engine start
The engine starts automatically if:
Ryouswitch off the ECO start /stop function by
pressing the ECO button
Rin transmission position hori, the brake
pedal isreleased and the HOLD function isnot
active
Ryou depr ess the accelerator pedal
Ryou engage reverse gear k
Ryou move the transmission out of position j
Ryouswitch to drive program S+
Ryouswitch to drive program Sor M
(Mercedes-AMG veh icles)
Ryou unfasten your seat beltor open the driv-
er's door
Rthe veh iclestarts to roll
Rthe brake system requires th is
Rthe temperatureinthe veh icleinterior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
swit ched on
Rthe battery's condition of charge istoo low
Sh ifting the transmission to position jdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
All vehicles (except Mercedes-AMG vehi-
cles)
XTo deactivate: press ECO button :.
In dicator lamp ;goes out.
XTo activate: press ECO button :.
In dicator lamp ;lights up.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine willthen
not be switched off automatically when the vehi-
cle stops.
Mercedes-AMG vehicles
XTo deactivate: indrive program C, press ECO
button :.
or
XSwit ch to drive program S,S+ orM
(Ypage 129).
In dicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
126Driving
Driving and parking

If drive programS,S+ orMis active, the auto-
matic transmission switches to drive program
C.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as the result of a malfunction. The engine will then
not be switched off automatically when the vehi-
cle stops.
Problems with the engine
ProblemPossible causes/consequences and
MSolutions
The engine does not
start.The HOLD function or Distance Pilot DISTRONIC is activated.
XDeactivate the HOLD function (Ypage 159) or Distance Pilot
DISTRONIC (Ypage 156).
XTry to start the engine again.
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position uin the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
XTry to start the engine again (Ypage 123). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 278).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XAllow the starter motor to cool down for approximately two minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at a qualified specialist work-
shop.
Driving127
Driving and parking
Z

ProblemPossible causes/consequences andMSolutions
The coolant temperature
gauge shows a value
above 248 ‡ (120 †).
The coolant warning
lamp may also be on and
a warning tone may
sound.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 260). Observe the warning notes
as you do so and add coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled sufficiently.
XAt coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic.
DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
will change:
Rthe drive (engine and transmission manage-
ment)
Rthe suspension
Rthe steering
Rthe curve tilting function (vehicles with Active
Body Control)
Rthe control thresholds of ESP®
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 123).
XPress DYNAMIC SELECT button :as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After a short period of
time, the display goes out and the symbol for the selected drive program appears.
In addition, the current drive program settings
are displayed briefly in the multimedia systemdisplay.
iIn a few 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 any
drive program, regardless of the display in the
multimedia system display.
Available drive programs:
C ComfortComfortable and economi-
cal driving characteristics
SSportSporty driving characteris-
tics
S+ Sport PlusParticularly sporty driving
characteristics
IIndividualIndividual settings
128DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking

EEconomy
(vehicles with
adjustable
damping)Particularly economical
driving characteristics
CV CURVE
(vehicles with
Active Body
Control)Particularly economical
driving characteristics with
cornering function
Additional information for drive programs
(Ypage 134).
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
General information
Select the drive program using the DYNAMIC
SELECT controller.
Available drive programs:
I IndividualIndividual settings
C ComfortComfort-oriented, opti-
mum-economy engine and
transmission settings
SSportSporty engine and trans-
mission settings
S+ Sport PlusParticularly sporty trans-
mission settings
RaceMaximum sportiness and
engine and transmission
settings suitable for the
racetrack
Depending on the drive program selected the
following vehicle characteristics will change:
Rthe drive (engine management)
Rthe transmission management
RESP®
Rthe suspension
Rthe steering
Rthe availability of the ECO start/stop function
Rthe driver assistance systems
Rthe availability of gliding mode
Further information for automatic drive program
characteristics (
Ypage 134). Additionally, in drive program
Iyou can config-
ure the respective vehicle characteristics using
the multimedia system. You can find informa-
tion about this in the Digital Operator's Manual.
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 123).
Selecting the drive program
XTurn DYNAMIC SELECT controller :as many
times as necessary until the desired drive
program is selected.
The symbol of the selected drive program is
shown in the multifunction display.
In addition, the current drive program settings
are displayed briefly in the multimedia system
display.
The drive program indicator on DYNAMIC
SELECT controller :lights up in red.
Additional information for drive programs
(
Ypage 134).
DYNAMIC SELEC T controller (Mercedes-AMG vehicles)129
Driving and parking
Z

Additional settings
:ECO start/stopfunction (Ypage 125)
;ESP®(Ypage 65 )
=Suspension (Ypage 166)
?Permanentactivation of manual gearshifting
(Ypage 136)
When you press buttons :-? thecorre-
sponding setting is selected. The DYNAMIC
SELECT controller setting is overwritten.
These setting swill also be maintaine dif you
switch to drive program RACE,S+, Sor Cwit h
th eDYNAMIC SELECT controller .
If you switch to drive program I,all store dchar-
acteristics will be accepted. This is also th ecas e
if you hav epreviously presse dbuttons :-?.
Aut oma tic trans mission
Import ant safety notes
GWARNIN G
If th eengin espee dis abov eth eidlin gspee d
and you engage transmission position Dor R,
th evehicl ecould pull away suddenly. There is
a ris kof an accident.
When engagin gtransmission position Dor R,
always firmly depress th ebrak epedal and do
no tsimultaneously accelerate .
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off th eengine.
The vehicl emay rol laway. There is aris kof an
accident.
Afte rswitching off th eengine, always switch
to parking position P.Preven tth eparked vehi-
cle from rollin gaway by applyin gth eparking
brake.
Selector lever
Overview oftrans mission positions
All vehicles (excep tMercedes-AM G vehi-
cles)
!If th eengin espee dis to ohigh or th evehicl e
is in motion ,do no tshif tth eautomatic trans -
mission directl yfrom htok, from ktoh
or directl yto j.
Do no topen th edriver's door while th evehi-
cle is in motion .At low speeds in transmission
position hork, otherwise park position j
is engage dautomatically.
The transmission could be damaged.
jPark position
kReverse gear
iNeutral
hDrive
The selector lever always return sto it soriginal
position .The curren ttransmission position j,
k, iorh is shown in th etransmission posi-
tion display in th emultifunction display.
Mercedes-AM G vehicles
!If theengin espee dis to ohigh or th evehicl e
is in motion ,do no tshif tth eautomatic trans -
mission directl yfrom htok, from ktoh
or directl yto j.
Do no topen th edriver's door while th evehi-
cle is in motion .At low speeds in transmission
position hork, otherwise park position j
is engage dautomatically.
The transmission could be damaged.
130Automatic transmission
Driving an d parking

Engaging park position P automatically
Park positionjis automatically engaged if:
Ryou switch off the engine using the SmartKey
and remove the SmartKey
Ryou switch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Ryou open the driver's door when the vehicle is
stationary or when driving at a very low speed
and the transmission is in position hork
Under certain conditions, the automatic trans-
mission shifts automatically to transmission
position jif the HOLD function or Distance
Pilot DISTRONIC is activated. Observe the infor-
mation on the HOLD function (
Ypage 160) and
on Distance Pilot DISTRONIC (Ypage 154).
Engaging reverse gear R
!Only move the automatic transmission to
k when the vehicle is stationary.
XDepress the brake and keep it pressed.
XPush the selector lever forwards past the first
point of resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further informa-
tion on the ECO start/stop function
(
Ypage 125).
Shifting to neutral N
GWARNING
If children are left unsupervised in the vehicle,
they could:
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of park
position P
Rstart the engine
There is a risk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
When leaving the vehicle, always take 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.
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the selector lever forwards or back to
the first point of resistance.
If you switch the engine off with the transmis-
sion in position korh, the automatic trans-
mission shifts to iautomatically.
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 jautomatically.
With KEYLESS-GO: if you then open the driver's
or front-passenger door, the automatic trans-
mission shifts to jautomatically.
If you want the automatic transmission to
remain in neutral i, e.g. when having the vehi-
cle cleaned in an automatic car wash with a
towing system:
XVehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock.
XInsert the SmartKey into the ignition lock.
XAll vehicles: switch the ignition on.
XDepress the brake pedal and keep it
depressed.
XEngage neutral i.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Engaging drive position D
XWhen the vehicle is stationary, depress the
brake pedal.
XPush the selector lever back past the first
point of resistance.
132Automatic transmission
Driving and parking

Vehicles with adaptive adjustable damp-
ing: drive program E (Economy)
Drive programEis characterized by the follow-
ing:
Rthe vehicle exhibits comfortable, economical
handling characteristics.
Rthe vehicle pulls away more gently in forward
and reverse gears, unless the accelerator
pedal is depressed fully.
Roptimal fuel consumption resulting from the
automatic transmission shifting up sooner.
The vehicle is driven in the low engine speed
range and the wheels are less likely to spin.
Rthe suspension exhibits comfortable damping
settings.
Rthe steering exhibits a comfortable steering
curve.
Rduring deceleration, the engine is disconnec- ted from the drive train. The vehicle uses
kinetic energy and consumes less fuel (coast-
ing mode).
RESP®provides the optimum compromise
between traction and stability. For further
information about ESP
®, see (Ypage 66).
Vehicles with Active Body Control: drive
program CURVE
CURVE drive program is characterized by the
following:
Rincreased driving comfort on bends.
Rthe vehicle tilts actively into the bend. Further
information on the cornering function
(
Ypage 164).
Rthe vehicle exhibits comfortable, economical
handling characteristics.
Rthe vehicle pulls away more gently in forward
and reverse gears, unless the accelerator
ped
al is depressed fully.
Rcomfortable suspension setting.
Rthe steering exhibits a comfortable steering
curve.
Roptimal fuel consumption resulting from the
automatic transmission shifting up sooner.
Rthe automatic transmission shifting up
sooner. This results in the vehicle being driven
at lower engine speeds and the wheels being
less likely to spin.
Rduring deceleration, the engine is disconnec-
ted from the drive train. The vehicle uses kinetic energy and consumes less fuel (coast-
ing mode).
RESP®provides the optimum compromise
between traction and stability. For further
information about ESP
®, see (Ypage 66).
Mercedes-AMG vehicles
RACE drive program
The RACE drive program is characterized by the
following:
Rthe vehicle exhibits driving characteristics
suitable for the racetrack.
Rall vehicle systems are set for maximum
sportiness.
Rthe gearshift recommendation gives you
information for slowly warming up the drive
assemblies and for adopting a fuel-efficient
driving style (
Ypage 136). You can follow the
gearshift recommendations at all times and
shift gear accordingly using the steering
wheel paddle shifters. On the basis of the
gearshift recommendation, using the steering
wheel paddle shifters, you can optimize the
drive train and engine operating mode at any
time.
Rif you have selected a gear manually, this will
be maintained until the vehicle speed increa-
ses or decreases dramatically.
Rthe vehicle pulls away in first gear.
Rthe automatic transmission shifts up later, the
fuel consumption possibly being higher as a
result of the later automatic transmission
shift points.
Rthe suspension exhibits particularly firm
damping settings.
Rgliding mode is not available.
Rthe ECO start/stop function is not available.
RESP®switches to SPORT handling mode. The
M SPORT handling mode warning lamp in
the instrument cluster lights up. The SPORT
HandlingModemessage appears in the mul-
tifunction display. Observe the important
safety notes for the SPORT handling mode
(
Ypage 67).
RESP®only improves driving stability to a limi-
ted degree. The engine's torque is only
restricted to a limited degree and the drive
wheels can spin. For further information
about ESP
®, see (Ypage 67).
Automatic transmission135
Driving and parking
Z