2019 MERCEDES-BENZ AMG GT ROADSTER engine

006C
Activates/deactivates synchronization (Y page 106)
006D Activates/deactivates air-recirculation mode manually (Y page 107)
006E Switches cooling with air dehumidification on/off (Y page 104)
006F Sets the temperature, right (Y page 105)Optimum use of dual-zone automatic
climate control
Dual-zone automatic climate control The following contains instructions and recom-
mendations to enable you to get the most out of
your dual-zone automatic climate control:
R Activate climate control using the 0058
rocker switch. The indicator lamp above the
0058 rocker switch lights up. The "Cooling
with air dehumidification" function is not acti- vated automatically in automatic mode. If
necessary, activate this function
(Y page 104).
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" function
briefly until the windshield is clear again.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up,
since no fresh air is drawn into the vehicle in
air-recirculation mode.
ECO start/stop function During automatic engine switch-off, the climate
control system only operates at a reduced capa-
city. If you require the full climate control output, you can switch off the ECO start/stop function
by pressing the ECO button (Y page 114).Operating the climate control sys-
tems Setting climate control
General notes When the climate control is switched off, the air
supply and air circulation are also switched off. The windows could fog up. Therefore, switch off
climate control only briefly
Switch on climate control primarily using the
0058 rocker switch (Y page 105).
Activating/deactivating X
Select key position 0048with the Start/Stop
button (Y page 111).
X To switch on: set the airflow to level 1or
higher using the Hrocker switch.
X To switch off: set the airflow to level 0using
the H rocker switch. Switching cooling with air dehumidi-
fication on/off
General notes If you deactivate the "Cooling with air-dehumid-
ification" function, the air inside the vehicle will
not be cooled. The air inside the vehicle will also
not be dehumidified. The windows can fog up
more quickly. Therefore, deactivate the cooling
with air-dehumidification function only briefly.
The "Cooling with air dehumidification" function is only available when the engine is running. Theair inside the vehicle is cooled and dehumidified
according to the temperature selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc-
tion.
Activating/deactivating X
Press the 005Arocker switch up or down.
The indicator lamp above the 005Arocker
switch lights up or goes out. 104
Operating the climate control systemsClimate control

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 vehicle has 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.
R You should therefore drive at varying vehicle
and engine speeds for the first 1,000 miles
(1,500 km).
R Ideally, for the first 1,000 miles (1,500 km),
drive in program C.
R Do not drive faster than 85 mph (140 km/h)
for the first 1,000 miles (1,500 km).
R Only briefly allow the engine to reach a max-
imum engine speed of 4,500 rpm briefly.
R Avoid heavy loads, e.g. driving at full throttle,
during this period.
R Do not exceed 00C3of the maximum permitted
engine speed for each gear.
R Shift up into manual mode Mand temporary
manual drive program in good time.
R Do not carry out a RACE START.
R Do not manually shift to a lower gear to brake
the vehicle.
R Try 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 maximum per-
missible speed. Driving
Important safety notes
G
WARNING
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. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
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. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off. Driving
109Driving and parking Z

!
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:
R the SmartKey must be in the vehicle
R the vehicle must not be locked with the
SmartKey or KEYLESS-GO (Y page 67)Do not keep the SmartKey:
R with electronic devices, e.g. a mobile phone
or another SmartKey
R with metallic objects, e.g. coins or metal foil
R inside 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:
R you will not be able to switch on the ignition
with the Start/Stop button
R you 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 (Y page 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
(Y page 200).
If Start/Stop button 0043has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
X To switch on the power supply: press
Start/Stop button 0043once.
The power supply is switched on. You can now
activate the windshield wipers, for example. If you press Start/Stop button 0043twice in this 110
DrivingDriving and parking

key position, the power supply is switched off
again.
X To switch on the ignition: press Start/Stop
button 0043twice.
The ignition is switched on.
If you press Start/Stop button 0043once when
in this position, the ignition is deactivated
again. 0043
Start/Stop button USA
0044 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. 005A
To remove the SmartKey
0047 Power supply for some consumers, such as
the windshield wipers
0048 Ignition (power supply for all consumers)
and drive position
0049 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. Starting the engine
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 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. G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases is hazardous to health
and can result in poisoning. There is a risk of
fatal injury. Therefore, never leave the engine running an enclosed space without adequate
ventilation. G
WARNING
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. Driving
111Driving an d parking Z

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 X
Shift the transmission to position 005D
(Y page 117).
The transmission position indicator on the
multifunction display shows 005D
(Y page 119).
You can start the engine in transmission posi-
tion 005Dand 005C.
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.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 110).
The engine starts.
Starting procedure with the SmartKey X
Turn the SmartKey to position 0049in the igni-
tion lock (Y page 111) and release it as soon
as the engine is running.
If the engine will not start: X Remove the SmartKey from the ignition lock.
X Reinsert the SmartKey into the ignition lock
after a short waiting period. X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 111).
The indicator lamps in the instrument cluster light up (Y page 199).
X Turn the SmartKey to position 0049in the igni-
tion lock (Y page 111) and release it as soon
as the engine is running. Pulling away
General notes G
WARNING
If the engine speed is above the idling speed
and you engage transmission position 003A
or 0046, the vehicle could pull away suddenly.
There is a risk of an accident.
When engaging transmission position 003Aor
0046, 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 (Y page 73).
It is only possible to shift the transmission from position 005Dto the desired position if:
R the engine is running and
R you 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 (Y page 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. 112
DrivingDriving and parking

G
WARNING
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:
R you are pulling away on a level road or on a
downhill gradient
R the transmission is in position 005C
R the electric parking brake is applied
R ESP ®
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:
R reduced steering effort and turning circle,
resulting in reduced parking effort.
R improved driving stability, e.g. on curves.
R the 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 G
WARNING
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 0043
ECO start/stop display
If the engine has been switched off automati-
cally by the ECO start/stop function, the 00D6
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:
R the ignition was switched off for more than
four hours or
R the 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:
R the ECO start/stop function is activated
(Y page 114) and
R you brake the vehicle to a standstill in trans-
mission position 005B
The ECO start/stop function is operational
when:
R the indicator lamp in the ECO button is lit
green
R the outside temperature and the atmospheric
air pressure is within the range that is suitable
for the system Driving
113Driving and parking Z

R
the engine and the transmission are at a suf-
ficient temperature for the ECO start/stop
function
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system detects that the windshield is not
fogged up when the air-conditioning system is switched on
R the hood is closed
R the 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:
R you switch off the ECO start/stop function by
pressing the ECO button
R switch to drive program RACE,S+orS
(Y page 116)
R you switch to manual mode M(Y page 121)
R in transmission position 005B, the brake pedal
is released and the HOLD function is not
active
R you depress the accelerator pedal
R you engage reverse gear 005E
R you move the transmission out of position 005D
R you unfasten your seat belt or open the driv-
er's door
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
shield when the air-conditioning system is
switched on
R the battery's condition of charge is too low
Shifting the transmission to position 005Ddoes
not start the engine. Deactivating or activating the ECO
start/stop function
X
To deactivate: press ECO button 0043.
Indicator lamp 0044goes out.
X To activate: press ECO button 0043.
Indicator lamp 0044lights up.
If indicator lamp 0044is 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:
R switch to drive program RACE,S+orS
(Y page 116)
R you switch to manual mode M(Y page 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. 114
DrivingDriving an
d parking

Setting the volume:
X Press button 0043.
If you select the loudest setting, indicator
lamp 0044lights up. You can also adjust the position of the exhaust
flap using the:
R DYNAMIC SELECT controller (Y page 116)
R Multimedia system Problems with the engine
Problem
Possible causes/consequences and
0050 0050Solutions The engine does not
start. The HOLD function or Active Distance Assist DISTRONIC is activated.
X Deactivate the HOLD function (Y page 145) or Active Distance
Assist DISTRONIC (Y page 142).
X Try to start the engine again (Y page 111).The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
Before attempting to start the engine again:
X Press the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
or X Turn the SmartKey back to SmartKey position 0092in the ignition
lock.
X Try to start the engine again (Y page 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: X Consult 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.
X Jump-start the vehicle (Y page 256).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X Try to start the engine again (Y page 111).
If the engine still does not start:
X Consult a qualified specialist workshop. Driving
115Driving and parking Z