2020 MERCEDES-BENZ AMG GT R-ROADSTER Owners Manual

The
stored speed is shown along with the per‐
manent status display and highlighted on the
speedome ter.When Active Dis tance Assi st
DISTRONIC is passi ve,th e speed is gr eyed out.
% On mo torw ays or high-speed major roads,
th e green çvehicle symbol is displa yed
cyclically when theve hicle is ready topull
aw ay.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Dis tance Assi st
DISTRONIC, the sy stem is switched topas‐
sive mode. The çsuspended message
appears in the multifunction displa y.
Display on the speedome ter
The stored speed is highlighted on the speedom‐
et er. If the speed of theve hicle in front is less
th an thestored speed, the segments in the
speedome ter light up. The deactivation of Active
Dis tance Assi stDISTRONIC, as well as altera‐
tions tothestored speed and the dis tance tobe
maintained, are displa yed in the control feed‐
back of the multifunction display on a single line. Sy
stem limits
The sy stem may be impaired or may not function
in thefo llowing situations, forex ample:
R In sn ow,ra in, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R The windsc reen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi- stor ey car pa rks or on roads with
st eep uphill or downhill gradients.
R Ifth ere are nar rowvehicles in front, such as
bicycles or mo torcyc les.
In addition, on slippery roads, braking or accel‐
erating can cause one or se veral wheels tolose
traction and theve hicle could then skid.
Do not use Active Dis tance Assi stDISTRONIC in
th ese situations. &
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC.
R Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. #
Take into account the tra ffic situation
before calling up thestored speed. 14 2
Driving and pa rking

&
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50% of the possible
deceleration. If this decele ration is not su ffi‐
cient, Active Dis tance Assi stDISTRONIC
alerts you with a visual and acoustic warning. #
Adjust your speed and main tain a suita‐
ble dis tance from theve hicle in front. #
Brake theve hicle yourself and/or take
ev asive action. &
WARNING Risk of accident if de tection
function of Active Dis tance Assi st
DISTRONIC is impaired
Ac tive Dis tance Assi stDISTRONIC does not
re act or has a limited reaction:
R when driving on a dif fere nt lane or when
ch anging lanes R
topedestrians, animals, bicycles or sta‐
tionary vehicles, or unexpected obs tacles
R tocompl extraf fic conditions
R tooncoming vehicles and crossing traf fic
As a result, Active Dis tance Assi st
DISTRONIC may nei ther give warnings nor
inter vene in su chsituations. #
Alw ays obser vethe tra ffic conditions
carefully and react accordin gly. Operating
Active Di stance Assist DIST RONIC
Re quirements:
R The elect ric pa rking brake is released.
R ESP ®
is activated and is not inter vening.
R The transmission is in position h.
R The driver's door is closed.
R Check of thera dar sensor sy stem has been
successfully comple ted.
R Parking Assist PARKTRONIC is not being
used topark theve hicle or toexit from a
parking space. #
Tooperate Active Di stance Assist
DISTRO NIC:press thero ck er switch on the
st eering wheel control unit up or down tothe
desired position.
Switching between Active Di stance Assist
DISTRO NIC and the limiter #
Press theI button. Driving and parking
14 3

Ac
tivating the variable limi ter or Active Dis‐
tance Assi stDISTRONIC #
Toactivate with out astored speed: press
rock er switch 1upM or down N, or
select Jwiththe left rocker switch.
or #
Toactivate with ast ored speed: select
J withthe left rocker switch. #
Active Di stance Assist DISTRO NIC:remo ve
yo ur foot from the accelerator pedal.
The cur rent vehicle speed is stored and
maintained (Active Dis tance Assi st
DISTRONIC) or limited (variable limiter) by
th eve hicle.
Pulling away with Active Di stance Assist
DISTRO NIC #
Activate Active Dis tance Assi stDISTRONIC
and remo veyour foot from the brake pedal. #
Select Jwiththe left rock er switch.
or #
Depress the accelerator pedal briefly and
fi rm ly.
The functions of Active Dis tance Assi st
DISTRONIC continue tobe car ried out.
Deactivating Active Di stance Assist
DISTRO NIC &
WARNING Risk of accident due toActive
Dis tance Assi stDISTRONIC still being
activated when you lea vethe driver's
seat
If yo u lea vethe driver's seat while theve hicle
is being braked byActive Dis tance Assi st
DISTRONIC only, theve hicle can rollaw ay. #
Alw ays deactivate Active Dis tance
Assi stDISTRONIC and secure theve hi‐
cle topreve nt it from rolling away
before you lea vethe driver's seat. #
Select Owiththe left rock er switch.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter venes, Active Dis tance Assi st
DISTRONIC is deacti vated.
Increasing/decreasing thesto red speed #
1 km/h: press rocker switch 1upM or
down Ntothe pressure point, or press
and hold (increments of 1 km/h).
or #
10km/h: press rock er switch 1upM or
down Nbeyond the pressure point, or
press and hold (increments of 10km/h).
or #
Accelerate theve hicle tothe desired speed
and press rocker switch 1upM.
Changing the specified distance totheve hi‐
cle in front #
Toreduce the speci fied distance: press
th eright rock er switch up (Ñ). #
Toincrease the specified distance: press
th eright rock er switch down (Ò). Fu
nction of Hill Start Assist Hill
Start Assist holds theve hicle for a short
time when pulling away on a hill under thefo l‐
lowing conditions:
R The transmission is in position hork. 14 4
Driving and pa rking

R
The electric parking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelera tor pedal
and depress it before theve hicle begins toroll
aw ay. &
WARNING Risk of accident and inju ry
due totheve hicle rolling away
Af ter a short time, Hill Start Assist no lon ger
holds theve hicle. #
Swiftly mo veyour foot from the brake
pedal tothe accelera tor pedal. Do not
lea vetheve hicle when it is being held
by Hill Start Assist. HOLD function
HOLD function
The HOLD function holds
theve hicle at a stand‐
st ill without requ iring youto depress the brake
pedal, e.g. while waiting in traf fic.
The HOLD function is only an aid. The responsi‐
bility forth eve hicle safely standing still remains
with the driver. Sy
stem limits
The HOLD function is only intended toprov ide
assis tance when driving and is not a su fficient
means of safeguarding theve hicle against rolling
aw ay when stationar y.
R The incline must not be greater than 30%.
Ac tivating/deactivating the HOLD function &
WARNING Risk of an accident due tothe
HOLD function being active when you
lea vetheve hicle
If th eve hicle is only braked with the HOLD
function it could, in thefo llowing situations,
ro llaw ay:
R Ifth ere is a malfunction in the sy stem or
in the po wer supp ly.
R Ifth e HOLD function is deactivated by
depressing the accelera tor pedal or brake
pedal, e.g. byave hicle occupant. #
Alw ays secure theve hicle against roll‐
ing away before you lea veit. Re
quirements: R
The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened.
R The engine is running or has been au tomati‐
cally switched off bythe ECO start/ stop
function.
R The electric parking brake is released.
R Active Dis tance Assi stDISTRONIC is deacti‐
va ted.
R The transmission is in position h,kori.
Ac tivating the HOLD function #
Dep ress the brake pedal, and af ter a short
time quickly depress fur ther until theë
display appears in the multifunction displa y. #
Release the brake pedal.
Deactivating the HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until theë dis‐
play disappears from the multifunction dis‐
pla y. Driving and pa
rking 14 5

The HOLD function is deactivated in
thefo llow‐
ing situations:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
R The transmission is shif tedto position j.
R The vehicle is secured with the electric park‐
ing brake.
In thefo llowing situations, theve hicle is held by
transmission position jand/or bythe electric
parking brake:
R The seat belt is unfas tened and the driver's
door is opened.
R The vehicle is switched off.
R There is a malfunction in the sy stem or the
po we r supp lyis insuf ficient. RACE
START Fu
nction of RACE START
RACE START enables optimal vehicle accelera‐
tion from a standstill. Forth is, a suitably high-
gr ip road sur face is required, the tyres and vehi‐
cle must also be in good condition. %
RACE START is only available af terth eve hi‐
cle has been run in (/ page 106).
% RACE START may not be used on normal
ro ads. RACE START mu stonly be activated
and used on dedicated race circuits, not on
public roads.
Be sure toread the saf ety no tes and infor‐
mation on ESP ®
(/ page 133). &
WARNING Risk of skidding and having
an accident from wheels spinning
If yo u use RACE STAR T,depending on the
ESP ®
mode selected, there is an increased
ri sk of skidding and having an accident. #
Make sure that no persons or obstacles
are in the close vicinity of your vehicle. Ac
tivating RACE START
Re quirements:
R the driver's door is closed.
R the engine is running and the transmission
and engine are at normal operating temp era‐
ture. R
the front wheel is in thest ra ight-ahead posi‐
tion.
R theve hicle is on le velground.
R theve hicle is stationar y,the brake pedal is
depressed (left foot ) and the parking brake is
re leased.
R the transmission is in position h.
R one of the drive programs C,Bor
I is selected (/ page117). #
Rapidly depress the accelerator pedal full y.
The engine speed increases.
% Ifth e activation conditions are not fulfilled,
RACE START cannot be acti vated. The RACE
START not possible See Owner's Manual
message appears in the multifunction dis‐
pla y. #
The RACE START Release brake to start mes‐
sage appears in the multifunction displa y.14 6
Driving and pa rking

%
Inthis phase you can adjust RACE START
depending on thero ad conditions: you can
va ry the engine speed bypulling on one of
th esteering wheel gearshift paddles. The
segments in the multifunction display flic ker
ra pidly.
% Ifth e brake pedal is not released af ter a
short while, RACE START is cancelled. The
RACE START cancelled messageappears in
th e multifunction displa y.#
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera‐
tion. The RACE START active message
appears in the multifunction displa y.
RACE START is deacti vated immediately if you
re lease the accelerator pedal during RACE
ST ART or if any of the activation conditions are
no longer fulfilled. The RACE START cancelled
message appears in the multifunction displa y.
% After using it se veral times in short succes‐
sion, RACE START is una vailable until a cer‐
ta in dis tance has been driven. Tr
action control Fu
nction of traction control &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilisation. #
ESP ®
should on lybe deactivated in the
fo llowing situations. Ad
jus table traction control is used toenhance
per form ance on a race track and is only acti va‐
te d when ESP ®
is deactivated. You can adjust
th e le vel of assis tance from traction control and,
in doing so, adjust the balance between stability
and agility gradually while accelerating.
Tr action control suppo rts yo u on ly in me tering
th e engine output. As ESP ®
is deactivated, ESP ®
does not stabilise theve hicle if theve hicle starts
to skid.
% Deactivating ESP ®
and using adjus table trac‐
tion control requires a highly qualified and
ex perienced driver. Ad
jus table traction control may not be used
on normal roads. Adjus table traction control
may only be activated and used on dedica‐
te dra ce circuits, not on public roads.
Be sure toobser vethe saf ety no tes and
information on ESP ®
(/ page 133).
Ad justing traction control
Requ irements:
R ESP ®
is deactivated. The åandESP OFF
wa rning lamps light up in the instrument
clus ter (/ page135).
Yo u can adjust the le vel of assis tance from trac‐
tion control and, in doing so, adjust the balance
between stability and agility gradually while
accelerating.
Ta ke thefo llowing parame ters into account:
R current road conditions
R type of tyre used
R road characteristics
R tyre condition, such as temp erature or wear
R personal driving style Driving and pa
rking 147

#
Toinc rease or reduce the le vel of assis tance
from traction control, turn control wi thLED
segment display 1clockwise or anti-clock‐
wise.
If yo u turn the control all thewa y anti-clo ck‐
wise (OFF), traction control is deactivated
and all the LEDs light up.
If yo u activate ESP ®
,th e le vel of assis tance from
traction control is controlled auto matically. Fu
nction of the AMG steering-wheel but tons The AMG
steering-wheel buttons are two addi‐
tional control elements on thesteering wheel.
Yo u can assign two vehicle functions of your
ch oice tothe left control element. You can
ch ange between theav ailable functions by
pressing the display buttons 2repeatedl y.The
cur rently selected functions are displ ayed in the
display buttons 2.
The following functions are available:
R ESP ®
(/ page 133)
R AMG RIDE CONTROL(/ page150) R
AMG Performance exhaust sy stem
(/ page 112)
R ECO start/ stop function (/ page111 )
R manual gearshifting (/ page121)
R AMG Dynamics( /page 117)
R active ae rodynamics profile(/ page149)
R front and reve rsing camera (/ page154)
If yo u ha veassigned a function toone of the dis‐
play buttons 2,you can operate this function
with the cor responding button 1.
The assignment of the display button 2
re mains stored even af ter a new engine start,
but the operating status of there spective func‐
tion is reset tothe basic setting.
Yo u can change between the drive prog rams
with thest abiliser bar actuator 3. The selected
drive program appears in the display button 4.
By pressing the display button 4,you can
direct lyaccess the drive prog ram = (Individ‐
ual) (/page 117). 14 8
Driving and pa rking

Re
ar wing Ad
justing the stationary rear wing
Re quirements:
R There is a soc ket wrench available forthe
re ar wing's bolts.
R There is a releasable, medium- stre ngth bolt
lo ck tohand.
The rear wing impr ovesth ere ar axle output and,
th erefore, theve hicle's driving stabilit y.Yo u can
mo vethere ar wing into an inclined and a flat
position.
When you mo vethere ar wing into the inclined
position, there ar axle output and the air resist‐
ance increase. #
Unscr ew the bolts 1with a soc ket wrench. #
Tilt th ere ar wing as far as it will go, upwards
into an inclined position, or down wards into a
fl at position. #
Equip the bolts 1with a releasable,
medium- stre ngth bolt lo ckand tighten them.
Specified tightening torq ue: 10Nm. Ac
tive aerodynamics profile Fu
nction of the active aerodynamics profile
The active aerodynamics profile is located on the
underbody of the front section and, toget her
with thest ationary rear spoiler, optimizes the
ve hicle's aerodynamics. Depending on
the drive prog ram selected and
th e driving speed, the active aerodynamics pro‐
fi le will automatically extend or retract.
Yo u can also extend and retract the active aero‐
dynamics profile manually for cleaning
(/ page 149).
Extending and retracting the acti veaerody‐
namics profile for cleaning &
WARNING Risk of becoming trapped
when you manually retract the active aer‐
odynamics profile
Pa rts of the body could become trapped. #
Ensure that there is no one in the
sweep of the active aerodynamics pro‐
fi le when youre tract the active aerody‐
namics profile. #
If someone does become trapped when
youre tract it, press the display switch
again immediately.
The active aerodynamics profile will
th en extend once more. Re
quirements: Driving and parking
14 9