MERCEDES-BENZ AMG GT ROADSTER 2018 Owner's Manual

Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehiclehas been delivered or after repairs. Full system
effectiveness is not reached until the end of this
teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal.
The first 1,000 miles (1,500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its per-
formance in the future.
RYou should therefore drive at varying vehicle
and engine speeds for the first 1,000 miles
(1,500 km).
RIdeally, for the first 1,000 miles (1,500 km),
drive in program C.
RDo not drive faster than 85 mph (140 km/h)
for the first 1,000 miles (1,500 km).
ROnly briefly allow the engine to reach a max-
imum engine speed of 4,500 rpm briefly.
RAvoid heavy loads, e.g. driving at full throttle,
during this period.
RDo not exceed Ôof the maximum permitted
engine speed for each gear.
RShift up into manual mode Mand temporary
manual drive program in good time.
RDo not carry out a RACE START.
RDo not manually shift to a lower gear to brake
the vehicle.
RTry to avoid depressing the accelerator pedal
beyond the pressure point (kickdown).
After 1,000 mile s(1,500 km), you can increase
the engine speed gradually and accelerate the
vehicle to full speed.
You should also observe these notes on break-
ing in if the engine or parts of the drive train on
your vehicle have been replaced.
Always observe the respective maximu m per-
missibl

e speed.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
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!Do not warm up the engine while stationary.
Pull away immediately. Avoid high engine
speeds and full throttle until the engine has
reached its operating temperature.
In vehicles with automatic transmission,
engage positions P and R only when the vehi-
cle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
!During a cold start with low engine oil tem-
peratures (below 32 ‡) (0 †), the maximum
engine speed is restricted in order to protect
the engine. To protect the engine and main-
tain smooth engine operation, avoid driving at
full throttle when the engine is cold.
Key positions
Start/Stop button
General notes
All vehicles are equipped with a Start/Stop but-
ton.
The Start/Stop button is located in the center
console and is illuminated when the vehicle is
unlocked.
The SmartKey must be in the vehicle.
Pressing the Start/Stop button several times in
succession corresponds to the different Smart-
Key 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, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
If there is a SmartKey in the ignition lock, this
takes precedence over the KEYLESS-GO start
function.
To start the vehicle without actively using the
SmartKey:
Rthe SmartKey must be in the vehicle
Rthe vehicle must not be locked with the
SmartKey or KEYLESS-GO (Ypage 67) Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phone
or another SmartKey
Rwith metallic objects, e.g. coins or metal foil
Rinside metallic objects, e.g. a metal case
This can affect the functionality of the Smart-
Key.
If you lock the vehicle with the SmartKey remote control or with KEYLESS-GO, after a short time:
Ryou will not be able to switch on the ignition
with the Start/Stop button
Ryou will no longer be able to start the engine
with the Start/Stop button until the vehicle is
unlocked again
If you lock the vehicle centrally using the button
on the driver's door (
Ypage 72), you can con-
tinue to start the engine with the Start/Stop
button.
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 the Start/Stop button
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Further information on situations where an
indicator lamp either fails to go out after starting
the engine or lights up while driving
(
Ypage 199).
If Start/Stop button :has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
XTo switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now
activate the windshield wipers, for example. If you press Start/Stop button :twice in this
110Driving
Driving and parking

key position, the power supply is switched off
again.
XTo switch on the ignition:press Start/Stop
button :twice.
The ignition is switched on.
If you press Start/Stop button :once when
in this position, the ignition is deactivated
again.
:Start/Stop button USA
;Start/Stop button Canada
SmartKey
You can also start the vehicle with the SmartKey
in the ignition lock.
The ignition lock is located in the rear stowage
space of the center console.
gTo remove the SmartKey
1Power supply for some consumers, such as
the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe 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.
Starting the engine
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk 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.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
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General notes
The catalytic converter is preheated for up to
30 seconds after a cold start. The sound of the
engine may change during this time.
AMG SPEEDSHIFT DCT 7-speed sport
transmission
XShift the transmission to positionj
(Ypage 117).
The transmission position indicator on the
multifunction display shows j
(
Ypage 119).
You can start the engine in transmission posi-
tion jand i.
Starting procedure with the Start/Stop
button
The Start/Stop button can be used to start the
vehicle manually without inserting the SmartKey
into the ignition lock. You merely need to carry
the SmartKey on your person. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start func-
tion.
You can start the engine if a valid SmartKey is in
the vehicle. Switch off the engine and always
take the SmartKey with you when leaving the
vehicle, even if you only leave it for a short time.
Pay attention to the important safety notes.
XDepress the brake pedal and keep it
depressed.
XPress the Start/Stop button once
(Ypage 110).
The engine starts.
Starting procedure with the SmartKey
XTurn the SmartKey to position 3in the igni-
tion lock (Ypage 111) and release it as soon
as the engine is running.
If the engine will not start:
XRemove the SmartKey from the ignition lock.
XReinsert the SmartKey into the ignition lock
after a short waiting period.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 111).
The indicator lamps in the instrument cluster
light up (
Ypage 198).
XTurn the SmartKey to position 3in the igni-
tion lock (Ypage 111) and release it as soon
as the engine is running.
Pulling away
General notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you 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 (
Ypage 72).
It is only possible to shift the transmission from
position jto the desired position if:
Rthe engine is running and
Ryou depress the brake pedal
If you do not depress the brake pedal, the E-
SELECT lever can still be moved but the parking
lock remains engaged.
Information on the automatic release of the
electric parking brake (
Ypage 130).
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.
112Driving
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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
Rear axle steering
General notes
Depending on the speed, rear axle steering
adapts the track of the rear axle to the position
of the front wheels. Together with the steering
angle of the front wheels, this results in greater
mobility and stability than on vehicles without
rear axle steering.
Rear axle steering has the following character-
istics:
Rreduced steering effort and turning circle,
resulting in reduced parking effort.
Rimproved driving stability, e.g. on curves.
Rthe vehicle has more direct steering. Control
of the vehicle is thereby increased.
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
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.
The ECO start/stop function is only available in drive program C.
The ECO start/stop function is activated when-
ever you switch on the engine using the Smart-
Key or the Start/Stop button. This is the case if:
Rthe ignition was switched off for more than
four hours or
Rthe ECO start/stop function had been activa-
ted before the engine was switched off
Automatic engine switch-off
The ECO start/stop function switches the
engine off automatically if:
Rthe ECO start/stop function is activated
(Ypage 114) and
Ryou brake the vehicle to a standstill in trans-
mission position h
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green
Rthe outside temperature and the atmospheric
air pressure is within the range that is suitable
for the system
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Rthe engine and the transmission are at a suf-
ficient temperature for the ECO start/stop
function
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 isswitched 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.
The HOLD function can also be activated if the
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function by pressing the ECO button
Rswitch to drive program RACE,S+ orS
(Ypage 116)
Ryou switch to manual mode M(Ypage 121)
Rin transmission position h, the brake pedal
is released and the HOLD function is not
active
Ryou depress the accelerator pedal
Ryou engage reverse gear k
Ryou move the transmission out of position j
Ryou unfasten your seat belt or open the driv-
er's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position jdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
XTo deactivate: press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator 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 will then
not be switched off automatically when the vehi- cle stops.
The ECO start/stop function is deactivated, if:
Rswitch to drive program RACE,S+ orS
(Ypage 116)
Ryou switch to manual mode M(Ypage 121)
AMG sports exhaust system
You can choose between different AMG sports
exhaust system volumes using the position of
the exhaust flap.
Each time you start the engine with the Smart-
Key or the Start/Stop button, the quietest set-
ting is activated.
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Setting the volume:
XPress button:.
If you select the loudest setting, indicator
lamp ;lights up. You can also adjust the position of the exhaust
flap using the:RDYNAMIC SELECT controller (Ypage 116)
RMultimedia system
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 145) or Distance Pilot
DISTRONIC (Ypage 141).
XTry to start the engine again (Ypage 111).
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:
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
or
XTurn the SmartKey back to SmartKey position uin the ignition
lock.
XTry to start the engine again (Ypage 111). 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 254).
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.
XTry to start the engine again (Ypage 111).
If the engine still does not start:
XConsult a qualified specialist workshop.
Driving115
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ProblemPossible causes/consequences andMSolutions
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.
The coolant temperature
display shows a value
above 248 ‡ (120 †).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 238). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT controller
General information
Select the drive program using the DYNAMIC
SELECT controller.
Available drive programs:
C ComfortComfort-oriented, optimum-
economy engine and trans-
mission settings
SSportSporty engine and transmis-
sion settings
S+ Sport PlusEspecially sporty engine and
transmission settings
RACE
(AMG GT C
Roadster)Maximum sportiness and
engine and transmission
settings suitable for the
racetrack
IIndividualIndividual settings
In urban traffic and stop-start traffic, drive pro-
gram Cis recommended.
Depending on the drive program selected the
following vehicle characteristics will change:
Rthe drive (engine management)
Rthe transmission management
RESP®(Ypage 62)
Rthe suspension (Ypage 147)
Rthe position of the exhaust flap
(Ypage 114)
Rthe availability of the ECO start/stop function (Ypage 113)
Rthe availability of gliding mode
(Ypage 120)
Further information for automatic drive program
characteristics (
Ypage 122).
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. Further information about starting
the engine (
Ypage 111).
Selecting the drive program
XTurn DYNAMIC SELECT controller :until the
desired drive program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
116DYNAMIC SELECT controller
Driving and parking

display goes out and the symbol of the selec-
ted drive program appears.
The drive program indicator on DYNAMIC
SELECT controller:lights up in red.
In addition, the current drive program settings
are displayed in the multimedia system dis-
play.
Additional settings
:Manual mode (Ypage 123)
;ECO start/stop function (Ypage 113)
=Position of the exhaust flap (Ypage 114)
?Suspension (Ypage 147)
AESP®(Ypage 62)
When you press buttons :-A the corre-
sponding setting is selected. The DYNAMIC
SELECT controller setting is overwritten.
These settings will also be maintained for man-
ual mode and ESP
®if you switch to drive pro-
gram RACE (AMG GT C Roadster), S+,S or C
using the DYNAMIC SELECT controller.
If you switch to drive program I, all stored char-
acteristics will be accepted. This is also the case
if you have previously pressed one of buttons :
- A. If you then change the drive program using
the DYNAMIC SELECT controller, the standard
setting for the drive program is selected.
AMG SPEEDSHIFT DCT 7-speed sports
transmission
Important safety notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate.
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
E-SELECT selector lever
General notes
!If the engine speed is too high or the vehicle
is in motion, do not shift the automatic trans- mission directly from htok, from ktoh
or directly to j.
Do not open the driver's door while the vehi-
cle is in motion. At low speeds in transmission
position hork, otherwise park position j
is engaged automatically.
The transmission could be damaged.
!If you want to engage a transmission posi-
tion or to exit park position j, the engine
must be running.
The E-SELECT lever always returns to its original
position.
The current transmission position j,k, ior
h is shown in the transmission position display
in the multifunction display.
AMG SPEEDSHIFT DCT 7-speed sports transmission117
Driving and parking
Z

Overview of transmission positions
jPark position with parking lock
kReverse gear
iNeutral
hDrive
Engaging park position P
XMake sure that the vehicle is stationary.
XDepress the brake pedal and keep it
depressed.
XPress button:on the center console.
If you depress the brake pedal and push the
E ‑SELECT lever forwards or pull it backwards to
the first point of resistance, park position jis
disengaged. The transmission shifts to neutral
i.
Engaging park position P automatically
Park position jis engaged automatically in the
following circumstances:
Rif you switch off the engine using the Start/
Stop button and open the driver's or front-
passenger door.
Rif you remove the SmartKey from the ignition
lock.
Rif you open the driver's door while traveling at
low speeds in transmission 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 144) and
on Distance Pilot DISTRONIC (Ypage 140).
Engaging reverse gear R
XMake sure that the vehicle is stationary.
XDepress the brake pedal and keep it
depressed.
XPush the E-SELECT lever forwards past the
first point of resistance.
The transmission position kis engaged.
If you engage reverse gear, the engine starts
automatically (
Ypage 114).
Shifting to neutral N
XStart the engine (Ypage 112).
XMake sure that the vehicle is stationary.
XDepress the brake pedal and keep it
depressed.
XPush the E-SELECT lever forwards or pull it
back to the first point of resistance, depend-
ing on the current transmission position.
If you move the E-SELECT lever to ibefore
switching off the engine, the transmission
remains in ifor approximately 30 minutes. If
you open the driver's or front-passenger door
during this period, the transmission automati-
cally shifts to park position j.
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:
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
118AMG SPEEDSHIFT DCT 7-speed sports transmission
Driving and parking