2018 MERCEDES-BENZ AMG GT ROADSTER engine

This pr
ovides traf fic tr ave lling behind you with an
eve n more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica‐
tion, the hazard warning lights switch on once
th eve hicle is stationar y.When you pull away
again, the hazard warning lights will switch off
automatically at appr oximately 10km/h. Yo u
can also switch off the hazard warning lights
using the hazard warning button. Cruise control and limiter
Fu
nction of cruise control
Cruise cont rolre gulates the speed totheva lue
selec tedby the driver.
If yo u accelerate toove rtake, forex ample, the
st ored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal af terove rtaking,
cruise control will resume speed regulation back
to thestored speed.
Cruise contro l is operated using the cor respond‐
ing steering wheel buttons. You can store any
speed abo ve30 km/h up tothe maximum speed
or up tothe set winter tyre limit. If
yo ufa ilto adapt your driving style, cruise con‐
trol can neither reduce therisk of an accident
nor override the la wsof ph ysics. It cannot take
into account road, weather or traf fic conditions.
Cruise control is only an aid. You are responsible
fo r maintaining a safe dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane.
Displa yson the multifunction display
The status of cruise control and thestored
speed are shown in the multifunction displa y. 1
Cruise cont rol is selec ted
2 Speed is sa ved, cruise control is deactivated
3 Speed is sa ved, cruise control is activated %
The segments extending from the cur rent
st ored speed tothe end of the scale, or to
th e set winter tyre limit, light up in the
speedome ter.
Sy stem limitations
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lo werge ar in good time on long
and steep downhill gradients. Take particular
no te ofthis when driving a laden vehicle. By
doing so, you will make use of the engine's brak‐
ing ef fect. This relie vesth e load on the brake
sy stem and pr events the brakes from overheat‐
ing and wearing tooqu ickl y.
Do not use cruise control in thefo llowing situa‐
tions:
R In traf fic situations whi chrequ ire frequent
ch anges of speed, e.g. in heavy traf fic, on
winding roads.
R On slippe ryroads. Accelerating can cause
th e drive wheels tolose traction and the
ve hicle could then skid.
R Ifyo u are driving when visibility is poor. Driving and parking
14 3

Ac
tivating/deactivating the HOLD function &
WARNING Risk of an accident due tothe
HOLD function being activated when you
lea vetheve hicle
If yo u lea vetheve hicle while only the HOLD
function is braking theve hicle, theve hicle
can rollaw ay inthefo llowing situations:
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 deactivate the HOLD function
and secure theve hicle against rolling
aw ay before leaving theve hicle. *
NO
TEDama gefrom auto matic braking If one of
thefo llowing functions is switched
on, theve hicle brakes automatically in cer‐
ta in situations:
R Active Brake Assi st
R Active Dis tance Assi stDISTRONIC
R HOLD function
R Active Parking Assist
To avo id damage totheve hicle, deactivate
th ese sy stems in thefo llowing or similar sit‐
uations: #
During towing #
In a car wash 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.
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 switched toposition j. 15 2
Driving and pa rking

R
The vehicle is secured with the electric park‐
ing brake.
In thefo llowing situations, theve hicle is held by
th e transmission position jorby the electric
parking brake:
R The seat belt is unfas tened and the driver's
door is opened.
R The drive sy stem is switched off.
R There is a malfunction in the sy stem or the
po we r supply is insuf ficient. RACE
START Fu
nction of RACE START
RACE START enables optimal vehicle accelera‐
tion from a standstill. Forth is, a suitably high-
grip road sur face is requ ired, 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 114).
% 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 137). &
WARNING Risk of skidding and having
an accident from wheels spinning
When you use RACE STAR T,individual wheels
could spin and you could lose cont rol of the
ve hicle.
Depending on the ESP ®
mode selected, there
is an increased risk 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 doors, the bonn etand theta ilgate are
closed.
R the engine is running and the transmission
and engine are at normal operating temp era‐
ture. R
thesteering wheel is in thest ra ight-ahead
position.
R theve hicle is on le vel ground.
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 prog rams C, Bor
I is selected (/ page119). #
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. Driving and pa
rking 15 3

%
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 when theve hicle rea‐
ch es a speed of appr oximately 50 km/h.
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. Fu
nction of the AMG DRIVE UNIT The AMG Drive
Unit consists of two additional
control elements on thesteering wheel.
Using the display buttons 2,you can decide
which two functions youwo uld like tooperate
with the left-hand AMG DRIVE UNIT control ele‐
ment. You can change between theav ailable
functions bypressing there spective display but‐
to n. Yo
u can select between thefo llowing functions:
R ESP ®
(/ page 137)
R AMG RIDE CONTROL (/ page156)
R AMG Performance exhaust sy stem
(/ page 119)
R ECO start/ stop function (/ page118)
R manual gearshifting (/ page124)
R rear wing (/ page155)
R fron t and reve rsing camera (/ page159)
The selected functions are displa yed in the dis‐
play buttons 2.
By pressing button 1,you can operate the
selected functions.
The selected functions remain stored even af ter
a new engine start but are reset totheir basic
setting.
Yo u can change between the drive programs
with thero tary adjus ter3. The selected drive
program appears in the display button 4. By
pressing the display button 4,you can direct ly
access the drive program =(Individual)
(/ page 119). 15 4
Driving and pa rking

If
AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended messageappears.
If AT TENTION ASSIST is deactivated, theé
symbol appears in the assis tance graphic in the
instrument display when the engine is running.
AT TENTION ASSIST is activated automatically
when the engine is re-sta rted. The last selected
sensitivity le velre mains stored.
Sy stem limitations
AT TENTION ASSIST is active in the 60 km/h to
200 km/h speed range.
The functionality of ATTENTION ASSIST is
re stricted, and warnings may be dela yed or not
occur at all in thefo llowing situations:
R Ifyo u ha vebeen driving for less than appr ox‐
imately 30 minutes.
R Ifth ero ad condition is poor (une venro ad
sur face or po tholes).
R Ifth ere is a strong side wind.
R Ifyo u adopt a sporty driving style (high cor‐
nering speeds or high rates of acceleration).
R Ifth e time has been set incor rectl y. R
In active driving situations, if youch ange
lanes and vary your speed frequentl y.
The ATTENTION ASSIST tiredness or alertness
assessment is dele ted and restar ted when con‐
tinuing the journey in thefo llowing situations:
R Ifyo u swit choff the engine.
R Ifyo u unfas tenyo ur seat belt and open the
driver's door (e.g. changing drivers or taking
a break).
Setting ATTENTION ASSI ST
Multimedia sy stem:
4 Vehicle 5
k Assistance
5 ATTENTION ASSIST
Setting options #
Select Standard, SensitiveorOff.
Suggesting a rest area #
Select Suggest rest area . #
Activate Oor deacti vate the function ª.
If AT TENTION ASSIST de tects fatigue or
increasing la ckof attention, it suggests a
re st area in the vicinit y. #
Select a sugges tedre st area: you are gui‐
ded tothe selected rest area. Blind Spot Assist
Fu
nction of Blind Spot Assist
Blind Spot Assist uses two lateral, rear-facing
ra dar sensors tomonitor the area up to3 m
behind and next toyour vehicle.
If a vehicle is de tected at speeds ab ove appr ox‐
imately 30 km/h and this vehicle subsequently
enters the monitoring range next to yourvehicle,
th ewa rning lamp in the outside mir ror lights up
re d.
If a vehicle is de tected close tothe side of your
ve hicle, there dwa rning lamp in the outside mir‐
ro rflashes. If you swit chon the turn signal indi‐
cator in the cor responding direction, a warning
to ne sounds once. If the turn signal indicator
re mains switched on, all other de tected vehicles
are indicated only bytheflashing of thered
wa rning lamp.
If yo uove rtake a vehicle quickl y,no warning is
given. 16 2
Driving and pa rking

Instrument display
overview &
WARNING Risk of accident due toan
instrument display malfunction
If th e Instrument Display has failed or mal‐
functioned, you may not recognise function
re strictions applying tosaf etyre leva nt sys‐
te ms.
The operating saf ety of your vehicle may be
impaired. #
Drive on carefull y.#
Have theve hicle checked immediately
at a qualified specialist workshop. If
th e operating saf ety of your vehicle is
impaired, park theve hicle safely as soon as pos‐
sible. Contact a qualified specialist workshop. Instrument display in
the widescreen cockpit 1
Speedome ter
2 Multifunction display
3 Example: area for additional values
4 Coolant temp erature display
5 Fuel le vel and fuel filler flap location indica‐
tor
% Further display content can be shown on dis‐
play 3for additional values (/ page169).
The segments on speedome ter1 indica tethe
sy stem status forth efo llowing:
R Cruise control (/ page143) R
Speed limiter (/ page 144)
R Active Dis tance Assi stDISTRONIC
(/ page 147)
* NO
TEEngine dama gedue toexc essively
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. The fuel supply is inter
rupted toprotect the
engine when there d mark on there v counter 3
(o ve rrev ving range) is reached.
During no rmal operating conditions, the coolant
te mp erature display 4may rise to120 °C. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. 16 6
Instrument Display and on-board computer

#
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. Overview of
the but tons on thest eering
wheel 1
¤ Back/Home button (press and hold),
on-board computer
2 Touch Control, on-board co mputer 3
Control panel for cruise control/limiter or
Ac tive Dis tance Assi stDISTRONIC
4 Control panel for multimedia sy stem:
£ Voice control sy stem
ß Displa ysfavo urites
VO L: control knob, adjusts thevo lume or
switches the sound off 8(press)
6 Makes/accepts a call
~ Rejects/ends a call
5 ò Calls up the home screen
6 Touch Control multimedia sy stem
7 % Back button (press and hold) Operating
the on-boa rdcompu ter &
WARNING Risk of di stra ction from infor‐
mation sy stems and communications
equipment
If yo u operate information and communica‐
tion equipment integ rated in theve hicle
when driving, you will be distracted from the
traf fic situation. This could also cause youto
lose control of theve hicle. #
Only operate this equipment when the
traf fic situation permits. #
Ifyo u cannot be sure of this, stop the
ve hicle whilst paying attention toroad
and traf fic conditions and ope rate the
equipment with theve hicle stationar y. Obser
vethe legal requ irements forth e count ry
in which you are cur rently driving when you
operate the on-board computer.
% The on-board computer displa ysappear on
th e multifunction display (/ page170). In
stru ment Display and on-board computer 167

Setting
the design
On-board computer: 4 Design
The following designs can be selec ted:
R Supersport
R Sport
R Classic #
Toselect a design: swipe upwards or down‐
wa rds on the left-hand Touch Control. #
Press the left-hand Touch Control.
The instrument displ ayis shown in the selec‐
te d design. Setting
the additional value range Example: G-me
ter
1 Additional value range
2 Index points #
Toselect display content: swipetothe
ri ght on the left-hand Touch Control. #
Swipe upwards or down wards on the left-
hand Touch Control toselect display content.
When display content is selected, the addi‐
tional value range 1will brie fly be highligh‐
te d.
The index points 2will display the selected
list item. The
following con tent can be displ ayed in
Mercedes-AMG vehicles:
R Rev counter / date
R G-me ter
R Engine da ta
R AMG TR ACKPA CE
R Warm-up
R Trip computer Instrument Display and on-board computer
16 9