2016 MERCEDES-BENZ AMG GT ROADSTER brake

Do not open the driver's door while the vehi-
cle is in motion. At low speeds in transmission
position Dor R, park position Pis otherwise
engaged automatically.
The transmission could be damaged.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is safeguarded
against rolling away unintentionally:
R the electric parking brake must be applied.
R the transmission must be in position P.
R the key must be turned to position 0in the
ignition lock and then removed from the igni-
tion lock or the Start/Stop button must be
pressed
R the front wheels must be turned towards the
kerb on steep uphill or downhill gradients
R the empty vehicle must be secured at the
front axle with a wheel chock or similar
object, for example, on uphill or downhill gra- dients
R a laden vehicle must also be secured at the
rear axle with a wheel chock or similar object,
for example, on uphill or downhill gradients Switching off the engine
Important safety notes G
WARNING
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.
AMG SPEEDSHIFT DCT 7-speed sport
transmission !
Do not remove the key while the vehicle is in
motion. Otherwise, at low speeds, parking
lock Pwill be activated automatically. Do not open the driver's door while the vehi-
cle is in motion. At low speeds, transmission
position
Pis engaged automatically.
This could cause damage to the transmission
and the parking lock.
X Apply the electric parking brake.
X Shift the transmission to Pusing the button
on the centre console.
Using the Start/Stop button X Press the Start/Stop button (Y page 102).
The engine stops and all the indicator lamps
on the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to key position 1. When the driver's
door is open, this corresponds to key position
0: "key removed".
If you switch the engine off with the trans-
mission in position Ror D, the transmission
automatically shifts to N.
If you move the E-SELECT lever to Nbefore
switching off the engine, the transmission
remains in Nfor approximately 30 minute s.
If you open the driver's or front-passenger
door during this period, the transmission
automatically shifts to P.
The engine can be switched off while the vehi-
cle is in motion by pressing and holding the
Start/Stop button for about three seconds.
This function operates independently of the
ECO start/stop automatic engine switch-off
function.
Using the key X Turn the key to position 0in the ignition lock
and remove it.
The immobiliser is activated.
If you move the E-SELECT lever to Nbefore
switching off the engine, the transmission
remains in Nfor approximately 30 minutes. If
you open the driver's or front-passenger door
during this period, the transmission automat- ically shifts to P.
The transmission remains in Nif:
R the key is in the ignition lock and
R you use the E‑SELECT lever to shift the
transmission to Nbefore switching the
engine off
This still applies if you open the driver's or
front-passenger door. 120
ParkingDriving an
d parking

Further information on transmission position
N when operating with a key is available under
"Car wash" (Y page 238). Electric parking brake
General notes G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to 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
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or the system is malfunc-
tioning, it may not be possible to apply the
released parking brake.
X If this is the case, park the vehicle only on
level ground and secure it to prevent it from
rolling away.
X Shift the automatic transmission to position
P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or if there is a malfunction in the system. Contact a
qualified specialist workshop.
The electric parking brake carries out a function
check at regular intervals when the engine is
switched off. Noises that occur are normal. Applying or releasing manually X
To apply: push handle :.
When the electric parking brake is applied,
the red !indicator lamp lights up on the
instrument cluster.
The electric parking brake can also be applied when the key is in position 0.
X To release: pull handle:.
The red !indicator lamp on the instru-
ment cluster goes out.
The electric parking brake can only be released if:
R the ignition was switched on using the Start/
Stop button or
R the key is in position 1or 2in the ignition lock
(Y page 103)
Applying automatically The electric parking brake is automatically
applied when the transmission is in position P
and:
R the engine is switched off or
R the driver is not wearing a seat belt and the
driver's door is opened
To prevent the electric parking brake from being
automatically applied, pull handle :.
The electric parking brake is also applied auto-
matically if:
R DISTRONIC PLUS brings the vehicle to a
standstill or
R the HOLD function is keeping the vehicle sta-
tionary Parking
121Driving and parking Z

In addition, at least one of the following condi-
tions must be fulfilled:
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
The red !indicator lamp in the instrument
cluster lights up.
The electric parking brake is not automatically
applied if the engine is switched off by the ECO start/stop function.
Releasing automatically The electric parking brake of your vehicle is
released automatically when all the following
conditions are fulfilled:
R the engine is running
R the transmission is in position Dor R
R the seat belt is fastened
R you depress the accelerator pedal
If the transmission is in position R, the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled for the electric park- ing brake to be released automatically:
R the driver's door is closed
R you are shifting from transmission position P
or you have previously driven at speeds
greater than 3 km/h
Ensure that you do not depress the accelerator
pedal unintentionally. Otherwise, the parking
brake will be released and the vehicle will start
to move.
Emergency braking The vehicle can also be braked during an emer-
gency by using the electric parking brake.
X While driving, push handle :of the electric
parking brake (Y page 121).
The vehicle is braked as long as you keep
handle :of the electric parking brake
pressed. The longer electric parking brake
handle :is depressed, the greater the brak-
ing force. During braking:
R a warning tone sounds
R the Release parking brake
Release parking brake display mes-
sage appears
R the red !indicator lamp on the instrument
cluster flashes
When the vehicle has been braked to a stand-
still, the electric parking brake is applied. Parking up the vehicle
General notes If you leave the vehicle parked up for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer than
six weeks, it may suffer from lack of use.
X Contact a qualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop.
Charge retention of the on-board elec-
trical system battery The battery may drain if the vehicle is left sta-
tionary for long periods. In this case, Mercedes- Benz recommends attaching the trickle charger
to the 12 V socket in the luggage compartment. A trickle charger can be obtained from a
Mercedes-Benz Service Centre, for example.
X Switch the ignition off.
X Open the tailgate. 122
ParkingDriving and parking

X
Connect the cable provided in the luggage
compartment to the trickle charger.
X Connect the trickle charger to 12 V socket :.
Consult the manufacturer's operating instruc- tions on how to do so.
The tailgate can be closed, even if a trickle
charger is connected. Make sure that the con-
nector for both the connector cables is outside
of the vehicle.
The connector can then separate if the vehicle is
moved, even if you forget to disconnect the con- nector cables. This prevents damaging the
cables and the trickle charger.
A trickle charger connected to 12 V socket :
only maintains the current charge level of the
vehicle's electrical system battery. If the vehi-
cle's electrical system battery is discharged, it
needs to be charged with a battery charger. Driving tips
General driving tips
Important safety notes 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.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tyres should always be inflated to the rec-
ommended tyre pressure.
X Remove unnecessary loads.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out as
indicated by the service intervals in the Ser-
vice Booklet or by the service interval display.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic, on short jour- neys and in hilly terrain. Brakes
Important safety notes G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients Shift to a lower gear in good time on long and
steep downhill gradients. Take particular note of
this when driving a laden vehicle.
This also applies if cruise control, DISTRONIC
PLUS or SPEEDTRONIC are activated.
This will use the braking effect of the engine, so less braking will be required to maintain the
vehicle speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly.
Heavy and light loads G
WARNING
The braking system can overheat if you leave your foot on the brake pedal while driving.
This increases the braking distance and could
even cause the braking system to fail. There is
a risk of an accident.
Never use the brake pedal as a footrest. Do
not simultaneously depress both the brake
pedal and the accelerator pedal while driving.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If heavy demands are made on the brakes, do
not park the vehicle immediately. Drive on for a
short while. This allows the airflow to cool the
brakes more quickly.
If the brakes have been used only moderately,
you should occasionally test their effectiveness.
To do this, brake more firmly from a higher
speed while paying attention to the traffic con-
ditions. This improves the grip of the brakes. Driving tips
123Driving and parking Z

Wet road surfaces
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after a car wash or
after driving through deep water.
You will have to depress the brake pedal more
firmly. Maintain a greater distance to the vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads If you drive on salt-treated roads, a layer of salt
may form on the brake discs and pads. This can
increase the braking distance considerably.
Observe the following rules when driving on salt- treated roads:
R in order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions.
R carefully depress the brake pedal at the end
of the journey and when starting the next
journey.
R maintain a much greater distance to the vehi-
cle in front.
New brake discs and brake pads/
linings Brake pads/linings and discs that are either new
or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal.
For safety reasons, Mercedes-Benz recom-
mends only fitting the following brake discs and
brake pads/linings:
R brake discs that have been approved by
Mercedes-Benz
R brake pads/linings that have been approved
by Mercedes-Benz or that are of an equivalent
standard of quality
Other brake discs or brake pads/linings can
compromise the safety of your vehicle. Always replace all brake discs and brake pads/
linings on an axle at the same time. Always fit
new brake pads/linings when replacing brake
discs.
The vehicle is equipped with lightweight brake
discs to which the wheel assembly with rim and threaded connection is matched.
The use of brake discs other than those
approved by Mercedes-Benz may alter track
width and is subject to approval, if applicable.
Shock-type loads when handling the brake
discs, such as when changing wheels, can lead
to a reduction in comfort when driving with light-
weight brake discs. Avoid shock-type loads on
the lightweight brake discs, particularly on the
brake plate.
AMG high-performance and ceramic
brakes The AMG brake systems are designed for heavy
loads. This may lead to noise when braking. This
is dependent on:
R speed
R braking force
R environmental conditions, such as tempera-
ture and humidity
The wear of individual brake system compo-
nents such as the brake pads/linings or brake
discs depends on individual driving style and
operating conditions.
For this reason, it is impossible to state a mile-
age (service life) that will be valid under all cir-
cumstances. An aggressive driving style will
lead to high wear. You can obtain more infor-
mation on this from a qualified specialist work-
shop.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. Always be aware of this and adapt your
driving and braking accordingly during the run-
ning-in period.
Excessive heavy braking results in correspond-
ingly high brake wear. Observe the brake wear
warning lamp in the instrument cluster and note
any brake status messages in the multifunction
display. If you regularly drive at high speeds, it is particularly important to have the brake system
checked and maintained regularly. 124
Driving tipsDriving and parking

Driving on wet roads
Aquaplaning If water has accumulated to a certain depth on
the road surface, there is a danger of aquaplan- ing occurring, even if:
R you are driving at low speeds
R the tyres have adequate tread depth
For this reason, drive in the following manner in the event of heavy rain or in conditions in which
aquaplaning can occur:
R lower your speed
R avoid tyre ruts
R avoid sudden steering movements
R brake carefully
Driving on flooded roads !
Bear in mind that vehicles travelling in front
or in the opposite direction create waves. This may cause the maximum permissible water
depth to be exceeded.
These notes must be observed under all cir-
cumstances. You could otherwise damage
the engine, the electronics or the transmis-
sion.
If you must drive on stretches of road on which
water has collected, please bear in mind that:
R in the case of standing water, the water level
must be no higher than the lower edge of the
vehicle body
R you should drive no faster than walking pace Winter driving
G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden acceleration,
steering and braking manoeuvres. Do not use
cruise control.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
X Try to bring the vehicle under control by using
corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in wooded areas or on bridges. The vehicle could
skid if you fail to adapt your driving style. Always
adapt your driving style and drive at a speed to
suit the prevailing weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Further information on driving with snow chains (Y page 263).
Further information on driving with summer
tyres (Y page 263).
Observe the notes in the "Winter operation" sec-
tion (Y page 263). Driving tips
125Driving and pa rking Z

Driving systems
Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. Change into a lower
gear in good time on long and steep downhill
gradients. Take particular note of this when driv-
ing a laden vehicle. By doing so, you will make
use of the braking effect of the engine. This
relieves the load on the brake system and pre-
vents the brakes from overheating and wearing too quickly.
Use cruise control only if road and traffic con-
ditions are appropriate for maintaining a steady speed for a prolonged period. You can store anyroad speed above 30 km/h.
Cruise control lever :
To store the current speed or a higher speed
; LIM indicator lamp
= To store the current speed or re-calling the
last stored speed
? To store the current speed or a lower speed
A To switch between cruise control and varia-
ble SPEEDTRONIC
B To deactivate cruise control
You can operate cruise control and variable
SPEEDTRONIC with the cruise control lever.
The LIM indicator lamp on the cruise control
lever indicates which system you have selected:
R LIM indicator lamp off: cruise control is
selected.
R LIM indicator lamp on: variable SPEED-
TRONIC is selected.
When you activate cruise control, the stored
speed is shown in the multifunction display for five seconds. In addition, the
ésymbol
appears in the multifunction display. In the
speedometer, the segments between the stored
speed and the maximum speed light up.
Selecting cruise control X
Check whether LIM indicator lamp :is off.
If it is off, cruise control is already selected.
If it is not, press the cruise control lever in the direction of arrow ;.
LIM indicator lamp :in the cruise control
lever goes out. Cruise control is selected.
Storing and maintaining the current
speed You can store the current speed if you are driv-
ing faster than 30 km/h.
X Accelerate the vehicle to the desired speed.
X Briefly press the cruise control lever up :or
down ;.
X Remove your foot from the accelerator pedal.
Cruise control is activated. The vehicle auto-
matically maintains the speed.
i Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient 126
Driving syste
msDriving and parking

evens out. Cruise control maintains the
stored speed on downhill gradients by auto-
matically braking the vehicle.
Storing, maintaining and calling up a
speed G
WARNING
If you call up the stored speed and it is lower
than the current speed, the vehicle deceler-
ates. If you do not know the stored speed, the vehicle could decelerate unexpectedly. There
is a risk of an accident.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you do not know the stored speed, store the
desired speed again. X
Briefly pull the cruise control lever towards
you :.
X Remove your foot from the accelerator pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously stored
speed.
Setting a speed Bear in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the set speed.
X Press the cruise control lever up :for a
higher speed or down ;for a lower speed.
X Keep the cruise control lever pressed until the
desired speed is reached.
X Release the cruise control lever.
The new speed is stored.
X To adjust the set speed in1 km/hincre-
ments:
briefly press the cruise control lever
up : or down ;to the pressure point.
The last stored speed increases or decreases
in 1 km/h increments.
X To adjust the set speed in10 km/hincre-
ments: briefly press the cruise control lever
up : or down ;beyond the pressure point.
The last stored speed increases or decreases
in 10 km/h increments.
i Cruise control is not deactivated if you
depress the accelerator pedal. If you acceler-
ate to overtake, cruise control adjusts the
vehicle's speed to the last speed stored after
you have finished overtaking.
Deactivating cruise control There are several ways to deactivate cruise con-
trol:
X Briefly press the cruise control lever forwards
=.
or
X Brake.
or
X Briefly move the cruise control lever in the
direction of arrow ;.
Variable SPEEDTRONIC is selected. LIM indi-
cator lamp :in the cruise control lever is lit. Driving systems
127Driving and parking Z