2018 MERCEDES-BENZ AMG GT ROADSTER ECU

iIf you accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over-
taking.
Setting a specified minimum distance
You can set the specified minimum distance for
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distance that
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, dependent on vehicle speed. You
can see this distance in the multifunction dis-
play (
Ypage 142).
iMake sure that you maintain the minimum
distance to the vehicle in front as required by
law. Adjust the distance to the vehicle in front
if necessary.
XTo increase: turn control;in direction =.
Distance Pilot DISTRONIC then maintains a
greater distance between your vehicle and
the vehicle in front.
XTo decrease: turn control;in direction :.
Distance Pilot DISTRONIC then maintains a
shorter distance between your vehicle and
the vehicle in front.
Deactivating Distance Pilot DISTRONIC
There are several ways to deactivate Distance
Pilot DISTRONIC:
XBriefly press the cruise control lever for-
wards :.
or
XBrake, unless the vehicle is stationary
When you deactivate Distance Pilot DISTRONIC,
the Distance Pilot Off
message appears in
the multifunction display for approximately five
seconds.
iThe last speed stored remains stored until
you switch off the engine.
iDistance Pilot DISTRONIC is not deactivated
if you depress the accelerator pedal.
Distance Pilot DISTRONIC is automatically deac-
tivated if:
Ryou engage the electric parking brake or if the
vehicle is automatically secured with the elec-
tric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in position j,kori
Ryou pull the cruise control lever towards you
in order to pull away and the front-passenger
door or one of the rear doors is open
Rthe vehicle has skidded
If Distance Pilot DISTRONIC is deactivated, you
will hear a warning tone. You will see the Dis‐
tance Pilot Offmessage on the multifunc-
tion display for approximately five seconds.
Driving systems141
Driving and parking
Z

Distance Pilot DISTRONIC may mistakenly
detect vehicles that are crossing your lane. Acti-
vating Distance Pilot DISTRONIC at, for exam-
ple, a traffic light with crossing traffic, could
cause your vehicle to pull away at the wrong
time.
HOLD
General notes
The HOLD function can assist the driver in the
following situations:
Rwhen pulling away, especially on steep slopes
Rwhen maneuvering on steep slopes
Rwhen waiting in traffic
The vehicle is kept stationary without the driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehicle:
Rif there is a malfunction in the system or in the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
Rif the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with or the battery is disconnected
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away before
you leave it.
!When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations. To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
Deactivate the HOLD function (
Ypage 145).
Activation conditions
You can activate the HOLD function if all of the
following conditions are fulfilled:
Rthe vehicle is stationary.
Rthe engine is running or if it has been auto-
matically switched off by the ECO start/stop
function.
Rthe driver's door is closed or your seat belt is
fastened.
Rthe electric parking brake is released.
Rthe transmission is in position h,kori.
Activating the HOLD function
XMake sure that the activation conditions are
met.
XDepress the brake pedal.
XQuickly depress the brake pedal further until
HOLD: appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
iIf depressing the brake pedal the first time
does not activate the HOLD function, wait
briefly and then try again.
144Driving system s
Driving an d parking

Deactivating theHOL Dfunction
The HOLD function is deactivated if:
Ryou depress th eaccelerator and th etrans -
missio nis in position hork
Ryou shift th etransmissio nto position j
Ryou apply th ebrake sagain wit h acertain
amount of pressure until th eHOL Ddisplay dis -
appears from th emultifunction display
Ryou secure th evehicle usin gth eelectric park-
in g brake
iAfte r atime, th eelectric parking brake
secure sth evehicle and relieves th eservic e
brake .
The electric parking brake secure sth evehicle
automatically if th eHOLD function is activated
when th evehicle is stationary and :
Rthedriver's seat belt is no tfastene dand th e
driver's doo ris ope n
Rtheengin eis switched off, unless it is auto-
matically switched of fby th eEC Ostart/sto p
function
Ra syste mmalfunction occur s
Rthepowe rsupply is no tsufficien t
If th eelectric parking brake is no toperational, a
hor nwill soun dat regular intervals. The HOLD
function mus tthen be deactivated.
If amalfunction occurs, th etransmissio nmay
also be shifted to position jautomatically.
The Brake Immediately
messag emay also
appear in th emultifunction display.
XImmediately depress th ebrake firmly until th e
warnin gmessag ein th emultifunction display
goe sout .
The HOLD function is deactivated. If you turn of f
th eengine, take of fyour seat belt or ope nth e
driver's doo rwhen th eHOLD function is activa-
ted, ahor nwill soun dat regular intervals. The
soundin gof th ehor nalerts you to th efac tthat
th eHOLD function is still activated. If you
attempt to loc kth evehicle, th etone becomes
louder. The vehicle canno tbe locke duntil you
hav edeactivated th eHOLD function .
iAfterswitchin gof fth eengine, it can only be
started again once you hav edeactivated th e
HOLD function .
RACE START
Important safet ynotes
iRAC ESTART mus tno tbe used on normal
roads. RAC ESTART mus tonly be activated
and used on dedicated road circuits, outsid e
of publi croad use.
RAC ESTART enable soptimal acceleration from
a standin gstart .Fo rthis, asuitably high-grip
road surfac eis require dand th evehicle and tires
mus tbe in goo dworking order .
GWARNING
If you use RAC ESTART ,individual tires may
start to spi nand th evehicle could skid.
Dependin gon th eselecte dES P
®mode, there
is an increase dris kof skidding and havin gan
accident. Mak esur ethat no persons, animals
or obstacles are within range of th evehicle.
iObserv eth esafet ynote son drivin gsafet y
systems (Ypage 58).
Be sur eto rea dth esafet ynote sand informa-
tion on ES P
®(Ypage 62).
iObserveth especific servic erequirements
fo rracetrac kmode operation (Ypage 240).
Activation conditions
You can activateRAC ESTART under th efollow -
in g conditions:
Rth edoors are close d
Rtheengin eis running and th eengin eand
transmissio nare at operatin gtemperature .
Thi sis th ecas ewhen th eoil temperature dis -
play in th emultifunction display is shown in
whit e (
Ypage 170).
RESP®is functionin gcorrectl y (Ypage 62 )
Rthesteerin gwhee lis in th estraight-ahead
position
Rth evehicle is stationary and th ebrake peda lis
depressed sufficientl y(lef tfoot )
Rthetransmissio nis in position h
Rdrive program S,S+ orRAC Eis selecte d
(Ypage 116).
Driving systems14 5
Driving an d parking
Z

Display messagesPossible causes/consequences andMSolutions
T!
÷
Inoperative SeeOperator' sManual
EB D(electronic brak eforce distribution), AB Sand ES P®are malfunc -
tioning .
Other drivin gsystems and drivin gsafet ysystems may also malfunc -
tion .
In addition ,th e÷ and! warning lamp sligh tup in th einstru-
men tcluste rand awarning tone sounds.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above. The fron tand rear wheels could therefor eloc k
if you brak ehard, for example.
The steerabilit yand braking characteristics may be severely affected.
The braking distanc ein an emergenc ybraking situation can increase.
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increased ris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
J
Brake Immediately
A malfunction has occurred while th eHOLD function or Distanc ePilo t
DISTRONI Cwas activated.
A tone may also soun dat regular intervals. If you attemp tto loc kth e
vehicle, th etone become slouder.
You canno tstart th eengine.
XPayin gattention to th etraffic situation ,immediately depress th e
brak epedal firmly and hold until th edisplay message disappears.
XSecur eth evehicl eagainst rollin gaway (Ypage 127).
F(USA
only)
!(Canada
only)
Tur nOn the Igni‐
tio ntoReleas etheParkingBrake
The red F(USAonly) or !(Canada only) indicator lamp lights
up.
You attempte dto release th eelectric parking brak ewhile th eignition
was switched off .
XSwitchon th eignition .
F(USA
only)
!(Canada
only)
Please
Releas ePark‐ing Brake
The red F(USAonly) or !(Canada only) indicator lamp flashes
and awarning tone sounds. Acondition for automatic release of th e
electric parking brak eis no tfulfilled (
Ypage 130).
You are drivin gwit hth eelectric parking brak eapplied.
XReleas eth eelectric parking brak emanually.
The red F(USAonly) or !(Canada only) indicator lamp flashes
and awarning tone sounds.
You are usin gth eelectric parking brak efor emergenc ybraking
(
Ypage 129).
Display messages17 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!(Canada
only)
Parkin gBrake See
Operator' sManual
The yellow !warning lamp lights up.
The electric parking brak eis malfunctioning .
To apply :
XSwitchth eignition off .
XPress theelectric parking brak ehandle for at least te nseconds.
XShift th etransmission to position j.
XConsultaqualified specialist workshop .
The yellow!warning lamp and th ered F (USAonly) or !
(Canada only) indicator lamp ligh tup.
The electric parking brak eis malfunctioning .
To release:
XSwitc hoff th eignition and tur nit bac kon .
XReleas eth eelectric parking brak emanually.
or
XReleas eth eelectric parking brak eautomatically (Ypage 130).
If th eelectric parking brak estill canno tbe released:
XDo no tdrive on .
XConsult aqualified specialist workshop .
The redF(USAonly) or !(Canada only) indicator lamp flashes
and th eyellow !warning lamp lights up.
The electric parking brak eis malfunctioning .
To release:
XSwitc hoff th eignition and tur nit bac kon .
XReleas eth eelectric parking brak emanually.
To apply :
XSwitchoff th eignition and tur nit bac kon .
XApply th eelectric parking brak emanually.
If th ered F (USAonly) or !(Canada only) indicator lamp con-
tinue sto flash:
XDo no tdrive on .
XSecureth evehicl eagainst rollin gaway (Ypage 280).
XShift th etransmission to position j.
XTurn thefron twheels toward sth ecurb.
XConsult aqualified specialist workshop .
178Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up and th ered F (USAonly)
or ! (Canada only) indicator lamp flashes .
It is no tpossibl eto apply th eelectric parking brak emanually.
XShift th etransmission to position j.
XVisitaqualified specialist workshop .
$(USAonly)
J(Canada only)
Check Brake Fluid
Level
There is no tenough brak efluid in th ebrak efluid reservoir .
In addition ,th e$ (USAonly) or J(Canada only) warning lamp
lights up in th einstrumen tcluste rand awarning tone sounds.
GWARNIN G
The braking effec tmay be impaired.
There is aris kof an accident.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinu edrivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 127).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrec tth emalfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
US Aonly: th ered $ brakesystem warning lamp also lights up while
th eengin eis running.
XVisit aqualified specialist workshop .
G
Inoperative
Oneor mor emain features of th embrace system are malfunctioning .
XHaveth embrace system checke dimmediately at aqualified spe -
cialist workshop .
ActiveBrakeAssistFunctionsCurrentlyLimitedSee Opera‐tor's Manual
Active Brake Assis tis temporarily inoperative.
Possibl ecauses are:
Rth eradar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sof electromagneti cradiation
Rth esystem is outside th eoperating temperature range
Rth eon-boar dvoltag eis to olow
Whe nth ecauses state dabov eno longer apply, th edisplay message
disappears.
Active Brake Assis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 127).
XRestart th eengine.
180Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
ActiveBrakeAssistFunctions LimitedSee Operator'sMan ‐ual
Active Brake Assis tis unavailable due to amalfunction .Situation -
dependen tbraking assistanc emay also hav efailed.
XVisit aqualified specialist workshop immediately.
PRE-SAFE Inopera‐tiv eSeeOperator' sManual
Importantfunction sof PRE-SAF E®havefailed. Al lother occupant
safet ysystems ,e.g. air bags ,remain available.
XVisit aqualified specialist workshop immediately.
RadarSensor sDirtySee Operator' sMan ‐ual
At least on eof th efollowin gdrivin gsystems or drivin gsafet ysystems
is temporarily restricted or inoperative:
RActive Brake Assis t
Possibl ecauses are:
Rth esensor sin th eradiato rtrim and/o rin th ebumpers are dirty
Rth efunction of th edrivin gsystem or drivin gsafet ysystem is
impaire ddue to heav yrain or snow
A warning tone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay message
disappears. Al ldrivin gsystems or drivin gsafet ysystems are operative
again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 127).
XSwitchoff th eengine.
XClean th esensor sin th efollowin glocation s (Ypage 245):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularly in th ecenter of th erear bumper
XRestart th eengine.
The display message disappears.
6
SRSMalfunctionSer ‐viceRequired
The restrain tsystem is malfunctioning .The 6 warning lamp also
lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
This poses an increased ris kof injury or eve nfatal injury.
XVisit aqualified specialist workshop immediately.
Further information on th erestrain tsystem (
Ypage 40).
Display messages181
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
6
Front LeftMalfunc‐tio nServic eRequiredorFrontRight MalfunctionServic eRequired
The restrain tsystem is malfunctioning at th efron ton th elef tor right .
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
This poses an increased ris kof injury or eve nfatal injury.
XVisit aqualified specialist workshop immediately.
6
Lef tSid eCurtai nAirbag MalfunctionServiceRequiredor
Right Sid eCurtai n
Airbag MalfunctionServiceRequired
The left-han dor right-hand window curtai nair bag is malfunctioning .
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The lef tor right window curtai nair bag may either be triggered unin-
tentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop immediately.
182Display messages
On-board computer and displays