2020 MERCEDES-BENZ AMG GT R-ROADSTER engine

Fu
nction of Emotion Start #
Start theve hicle with thest art/ stop button
(/ page 105) and simultaneously pull one of
th esteering wheel gearshift paddles 1or
2.
R The idle speed is inc reased brief ly when
st arting the engine.
R The exhaust gasflaps are opened (spo rty
ch aracteristic) (/ page112).
St art theve hicle using thekey
Yo u can also start theve hicle with theke y in the
ignition loc k.The ignition lock is in there ar stow‐
age space in the cent reconsole. g
Toremo vethekey
1 Toswitch on the po wer supply
2 Toswitch on the ignition
3 Start engine #
Shift the transmission toposition jori. #
Depress the brake pedal. #
Insert theke y into the ignition lock and turn
to key position 3. #
Ifth eve hicle does not star t:
R switch off consumers that are not
requ ired.
R remo vetheke y from the ignition loc k.
R inse rttheke y into the ignition lock again
af te r a short waiting period.
R turn theke yto key position 2.the indi‐
cator lamps in the instrument clus ter light
up.
R turn theke yto key position 3.
% You can also swit chon the po wer supp lyor
th e ignition with thekey. Additionall y,turn
th eke yto key position 1or2 . Ru
nning-in no tes To
preser vethe engine during thefirs t1, 500 km:
R drive at varying road speeds and engine
speeds.
R do not drive fasterthan 140 km/h. 106
Driving and pa rking

R
allow the engine toreach a maximum engine
speed of 4,500 rpm on lybrief ly.
R drive theve hicle in drive program A.
R change gear before there v counter needle is
Ô ofthewa yto there d area of there v coun‐
te r.
R do not shift down a gear manually in order to
brake.
R avoidoverstra ining theve hicle, e.g. driving at
full thro ttle.
R do not depress the accelera tor pedal past
th e pressure point (kickdown).
R only increase the engine speed gradually and
accelera tetheve hicle tofull speed af ter
1, 500 km.
This also applies when the engine or parts of the
driv etra in ha vebeen replaced.
Please also obser vethefo llowing running-in
no tes:
R in cer tain driving and driving saf ety sy stems,
th e sensors adjust automatically while a cer‐
ta in dis tance is being driven af terth eve hicle
has been delivered or af terre pairs. Full sys‐ te
m ef fectiveness is not reached until the
end of this teach-in process.
R brakepads, brake discs and tyres that are
either new or ha vebeen replaced only ach‐
ie ve optimum braking ef fect and grip af ter
se veral hundred kilom etre s of driving. Com‐
pensate forth ere duced braking ef fect by
applying greaterfo rc eto the brake pedal. Note
s on engine output and engine torq ue %
The actual (maximum) values that can be
achie vedfo r engine output and engine tor‐
qu e may deviate from the certified values
within the count ry-specific guidelines for
permissible tolerances (basis: UN-ECE No.
85 or country -specific guidelines).
Fa ctors that can influence this are, forex am‐
ple:
R sea le vel
R fuel grade
R outside temp erature
R operating temp erature of the engine Unti
lth e engine has reached its operating tem‐
perature, thefo llowing engine operating temp er‐
ature warning lamp is lit: Engine output and engine
torque ha vebeen
re duced. Take this into account foryo ur driving
st yle.
When the engine operating temp erature warning
lamp goes out, full engine output and engine tor‐
qu e are available. Note
s on driving &
WARNING Risk of accident due to
objects in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal.
This jeopardises the operating and road
saf ety of theve hicle. Driving and parking
107

#
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll. #
Alw aysfit th efloor mats securely and
as prescribed in order toensure that
th ere is alw ays suf ficient room forthe
pedals. #
Do not use loose floor mats and do not
place floor mats on top of one ano ther. &
WARNING Risk of accident due toincor‐
re ct foot we ar
Incor rect foot we ar includes, forex ample:
R shoes with plat form soles
R shoes with high heels
R slippers #
Alw ayswe ar suitable foot we ar so that
yo u can operate the pedals safel y. &
WARNING Risk of accident if the ignition
is switched off while driving
If yo u swit choff the ignition while driving,
saf ety functions are restricted or no longer
av ailable.
Yo u will then need, forex ample, touse con‐
siderably more forc eto steer and brake. #
Do not switch off the ignition while driv‐
ing. &
DANG ER Risk of death caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vethe engine or, if present,
th e auxiliary heating running in an
enclosed space wi thout suf ficient venti‐
lation. &
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift down on slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction. #
Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect. &
DANG ER Risk of fata l injury due topoi‐
sonous exhaust gases
If th eta ilpipe is bloc ked or suf ficient ventila‐
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi‐
cle. This is the case when theve hicle
becomes stuck in sn ow,fo rex ample. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. 108
Driving and pa rking

#
Open a window on the side of theve hi‐
cle facing away from the wind toensure
an adequate supply of fresh air. &
WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may over‐
heat.
This increases the braking dis tance and the
brake sy stem may evenfa il. #
Never use the brake pedal as a foot re st. #
Do not depress the brake pedal and the
accelerator pedal at the same time
while driving. &
WARNING Risk of accident due toincor‐
re ct gearshifting
If th e engine speed is higher than the idle
speed and you en gage the transmission posi‐
tion hork, theve hicle may accelerate
sharply. #
Ifyo u en gage the transmission position
h ork when theve hicle is at a
st andstill, alw ays depress the brake
pedal firm lyand do not accelerate at
th e same time. *
NO
TEEngine damage duetoexcessively
high engine speeds The engine will be damaged if
you drive with
th e engine in theov errevving range. #
Do not drive wi th the engine in theove r‐
re vving range. *
NO
TECausing wearto the brake linings
by permanently depressing the brake
pedal #
Do not permanently depress the brake
pedal while driving. #
Touse braking ef fect of the engine,
shift toa lo werge ar in good time. *
NO
TEDama getothe driv etra in and
engine when pulling away #
Do not warm upthe engine while the
ve hicle is stationar y.Pull away immedi‐
atel y. #
Avoid high engine speeds and driving at
full thro ttle until the engine has reached
its operating temp erature. *
NO
TEDama getothe catalytic con verter
due tonon-combu sted fuel The engine is not
running smo othly and is
misfiring.
Non-combus ted fuel may get into the cata‐
lytic con verter. #
Only depress the accelera tor pedal
slightl y. #
Have the cause rectified immediately at
a qu alified specialist workshop. Note
s on driving on salt-treated roads
The braking ef fect is limited on salt-trea ted
ro ads. Driving and parking
109

Therefore, obser
vethefo llowing no tes:
R due tosalt build-up on the brake disks and
brakepads, the braking dis tance can increase
considerably orresult in braking only on one
side
R maintain a much greater safe dis tance tothe
ve hicle in front
To remo vesalt build-up:
R brake occasionally while paying attention to
th e tra ffic conditions
R carefully depress the brake pedal at the end
of the journey and when starting the next
journey
Note s on aquaplaning
Aq uaplaning can take place once a cer tain
amount of water has accumulated on thero ad
sur face.
Obser vethefo llowing no tes during heavy precip‐
itation or in conditions in which aquaplaning may
occur:
R reduce speed
R avoid tyre ruts R
avoid sudden steering mo vements
R brake carefully
% Also obser vethe no tes on regular lych ecking
wheels and tyres (/ page 321).
Note s on driving through water on the road
sur face
Wa ter which has entered into theve hicle can
damage the engine, electrics and transmission.
Wa ter can also enter the air intake of the engine
and cause engine damage.
Obser vethefo llowing if you must drive thro ugh
wate r:
R The water,when calm, may only reach the
lo we r edge of theve hicle body.
R Drive at walking pace at most, otherwise
wate r can enter theve hicle interior or engine
compartment.
R Vehicles tr avelling in front, or oncoming vehi‐
cles, can create waves which may exceed the
maximum permissible dep thofthewa ter.
The braking ef fect of the brakes is reduced af ter
fo rd ing. Brake carefully while paying attention toth
e traf fic conditions until braking po wer has
been fully restored. Fu
nction of rear axle steering The
rear axle steering is an electromechanical
auxiliary steering on there ar axle which adjusts
th esteering of there ar wheels according tothe
position of the front wheels, depending on the
speed. This results in greater manoeuvrability
and impr ovedstabilit y.
Re ar axle steering has thefo llowing characteris‐
tics:
R reduced steering ef fort and turning circle
re sulting in reduced parking ef fort
R impr oved driving stabilit y,e.g. when corner‐
ing
R more direct steering resulting in impr oved
handling of theve hicle
Obser vethe no tes on snow chains
(/ page 321) and on activating sn ow chain
mode. 11 0
Driving and pa rking

Information on
the AMG ceramic high-per‐
fo rm ance comp osite brake sy stem The brake sy
stem is designed for heavy loads.
This may lead tonoise when braking. This ef fect
can also occur af terwa shing theve hicle.
The noise depends on thefo llowing factors:
R speed
R brake force
R environmen tal conditions, e.g. temp erature
and air humidity
% Have the brake sy stem checked at a quali‐
fi ed specialist workshop af ter it has been
subjected toextreme loads. ECO
start/s top function Ope
ration of the ECO start/s top function
The engine is switched off auto matically inthe
fo llowing situations if all vehicle conditions for
an automatic engine stop are me t:
R you brake theve hicle toast andstill in trans‐
mission position hori. If
yo u swit chon the HOLD function in transmis‐
sion position hori, the engine will automati‐
cally stop in thefo llowing situations:
R youstop behind a vehicle that is pulling
aw ay.
R youstop at a stop sign when there is no vehi‐
cle in front of you.
R you turn thesteering wheel hard at a low
speed.
% In transmission position k,the engine is
not switched off automatically even when
th e HOLD function is switched on.
The engine is restar ted automatically if:
R youre lease the brake pedal in transmission
position hwhen the HOLD function is not
active and theve hicle does not start to
mo ve.
R you shift from transmission position j.
R youre lease the brake pedal and theve hicle
st arts tomo veon a gentle downhill gradient
at a speed below 5 km/h.
R you depress the accelera tor pedal. R
you permanently activate manual gearshift‐
ing.
R you pull the left-hand steering wheel gear‐
shift paddle.
R an automatic engine start is requ ired bythe
ve hicle.
If th e engine was switched off bythe ECO start/
st op function and you lea vetheve hicle, a warn‐
ing tone sounds. In addition, the message Vehi-
cle is operational Switch off ignition before exit-
ing appears in the multifunction displa y.Ifyou
do not switch off the ignition, the ignition is
automatically switched off af ter one minute. Driving and parking
111

Ra
cetrack operation Information on
racetrack operation %
Racetrack opera tion is understood as the
operation of theve hicle in extreme situa‐
tions when it is used on race trac ksor
closed-off trac ks.
Yo ur vehicle may be used on bo thpublic roads
and race trac ks. The vehicle operating loads dif‐
fe r depending on use, which require dif fering
maintenance inter vals.
When theve hicle is operated on a racetrac k,the
component pa rts are subject tohigher loads
th an on thero ad.
To account forth ese loads, thefo llowing meas‐
ures in particular are take n as pa rtof the main‐
te nance inter vals:
R Checking and replacing individual compo‐
nents
R Overhauling comple teassemblies af ter spe‐
cific periods of use Ad
ditional checks must alw ays be car ried out on
th eve hicle before and af ter each use on a race‐
trac k.
* NO
TEDama getocomponent pa rts
th ro ugh a rise in temp erature af ter oper‐
ation on a racetrack Switching
theve hicle off directly af ter opera‐
tion on a racetrack can lead toa continued
te mp erature increase of the component
parts as a result of heating while theve hicle
is stationar y.
The component parts may thereby be perma‐
nently damaged in exceptional cases. #
Do not switch off theve hicle immedi‐
atel y.Car ryout cool down laps at low
speed with minimal brake application.
Assemblies under stra in, such as the
engine and the braking sy stem, cool
down fasterthis wa y. #
Alw ays allow a Trac k-Check tobe car‐
ri ed out at a Mercedes-Benz Service
Centre before and af ter use on the
ra cetrac k. Mo
torsport equipment, e.g. six-point seat belts,
are only intended for use where road traf fic re g‐
ulations do not appl y.This also applies tomodifi‐
cations toboth th e suspension and aerodynamic
component parts.
Yo u can obtain fur ther information on servicing
yo ur vehicle from a Mercedes-Benz Service
Centre. Note
s onthech aracteristics of individual
ve hicle assemblies Due
tospecific vehicle operating loads in race‐
track ope ration, additional requirements must
be obser ved.
The following vehicle assemblies are af fected in
pa rticular:
R brake sy stem
R wheels and tyres
R suspension
R aerodynamic components Driving and parking
11 3

Obser
vethe additional information on the func‐
tion of the active aerodynamics profile
(/ page 149).
St ationary rear wing
% Only vehicles with the AMG Aerodynamic
pac kage are fitted wi thast ationary rear
wing.
The vehicle is delivered exworks with theflat
wing position. Toimpr overear axle po wer out‐
put, there ar wing can be mo vedto the inclined
position forra cetrack mode.
Obser vethe information about adjusting there ar
wing and the permitted tightening torque
(/ page 149). Note
s on engine oil Check
the engine oil le vel before operating in
ra cetrack mode. DY
NA MIC SELECT switch Fu
nction of theDY NA MIC SELECT switch Use
theDY NA MIC SELECT switch tochange
between thefo llowing drive programs:
R o (Slippery): optimised pulling away and
driving characteristics in wint ryand slippe ry
ro ad conditions
R = (Individual): individual settings
R A (Comfort): comfortable and economi‐
cal driving style
R C (Sport): sporty driving style
R B (Sport Plus): particularly sporty driving
st yle
R I (RACE): driving like on a race track
The I (RACE) drive program may not be
used on normal roads. I (RACE) must on ly
be activated and used on dedicated race cir‐
cuits, not on public roads.
Mercedes-AMG recommends selecting the drive
prog ram A when in city traf fic or stop-and-go
traf fic. Depending on
the drive program selected, the
fo llowing vehicle characteristics will change:
R drive
- engine and transmission management
- Active Dis tance Assi stDISTRONIC
R AMG Dynamics
- thefo ur agility functions Basic, Advanced,
Pro and Ma ster are automatically selec‐
te d depending on the drive prog ram.
- thesteering, shift timing point and stabili‐
sation functions are adap tedto the selec‐
te d drive prog ram.
- when ESP ®
is activated, agility function
Pro is selected in drive program I
RACE. The Mas ter function is auto mati‐
cally selected when ESP ®
is deactivated.
R position of theex haust gasflaps
R Suspension
R steering
R availability of Glide mode
R The I(R ACE)drive program has thefo l‐
lowing properties: Driving and parking
117