air condition MERCEDES-BENZ AMG GT ROADSTER 2018 Owners Manual

Mercedes-Benz Genuine
Parts
+ ENVIRONMENTAL
NOTEEnvironmental
dama gecaused bynot using recycled
re conditioned components Daimler
AGoffers recycled reconditioned
components and pa rts with the same quality
as new parts. The same entitlement from the
implied warranty is valid as for new parts. #
Use recycled reconditioned compo‐
nents and pa rts from Daimler AG.*
NO
TEImpairment of the operating ef fi‐
ciency of there stra int sy stems from
ins talling accessory parts or from repairs
or we lding Airbags and seat belt
tensioners, as well as
control units and sensors forth ere stra int
sy stems, may be ins talled in thefo llowing
areas of your vehicle:
R doors
R door pillars R
door sills
R seats
R cockpit
R instrument clus ter
R centre console
R late ra lro of frame #
Do not ins tall accessory parts such as
audio sy stems in these areas. #
Do not car ryout repairs or welding. #
Have accesso ries retrofitted at a quali‐
fi ed specialist workshop. Yo
u could jeopardise the operating saf ety of your
ve hicle if you use parts, tyres and wheels as well
as accessories releva nt tosaf ety which ha venot
been appr ovedby Mercedes-Benz. Saf ety-re le‐
va nt sy stems, e.g. the brake sy stem, may mal‐
function. Only use Mercedes-Benz Genuine Parts
or parts of equal qualit y.Only use tyres, wheels
and accessories that ha vebeen specifically
appr ovedfo ryo ur vehicle model. Mercedes-Benz
tests original parts and con ver‐
sion parts and accessories that ha vebeen spe‐
cifically appr ovedfo ryo ur vehicle model forth eir
re liability, saf ety and suitabilit y.Despite ongoing
ma rket resear ch, Mercedes-Benz is unable to
assess other parts. Mercedes-Benz therefore
accepts no responsibility forth e use of such
parts in Mercedes-Benz vehicles, even if they
ha ve been of ficially appr oved or independently
appr ovedby ate sting centre.
Cer tain parts are only of ficially appr ovedfor
ins tallation or modification if they comply wi th
legal requirements. All Mercedes-Benz Genuine
Pa rts meet the appr oval requ irements. The use
of non-appr oved parts may in validate theve hi‐
cle's general operating pe rmit.
This is the case in thefo llowing situations:
R theve hicle type is dif fere nt from that for
which theve hicle's general operating pe rmit
wa s granted.
R other road users could be endangered.
R theex haust gas or noise le velge ts wo rse. 20
General no tes

#
When driving on unpa vedro ads or off-
ro ad, regular lych eck theve hicle under‐
side. #
Remo vetrapped plants or other flam‐
mable material, in particular. #
Ifth ere is damage, consult a qualified
specialist workshop immediately. *
NO
TEDama getotheve hicle In
thefo llowing situations, in particular, there
is a risk of damage totheve hicle:
R theve hicle becomes grounded, e.g. on a
high kerb or an unpa vedro ad
R theve hicle is driven toofast over an
obs tacle, e.g. a kerb, speed bump or pot‐
hole
R a heavy object strike sth e underbody or
ch assis components
In situations such as this, the body, the
underbody, chassis components, wheels or
tyres could be damaged without the damage
being visible. Components damaged in this wa
y can unexpec tedly fail or, in the case of
an accident, may not absorb the loads that
arise as intended.
If th e underbody panelling is damaged, flam‐
mable materials such as lea ves, grass or
twigs can collect between the underbody and
th e underbody panelling. These materials
may ignite if they come into contact wi thhot
parts on theex haust sy stem. #
Have theve hicle checked and repaired
immediately at a qualified specialist
wo rkshop.
or #
If driving saf ety is impaired while con‐
tinuing your journe y,pull over and stop
th eve hicle immediately in accordance
with the traf fic conditions, and contact
a qu alified specialist workshop. Declaration of Conformity
Electromagnetic compatibility
The electromagnetic compatibility of
theve hicle
components has been checked and certified
according tothe cur rently valid version of Regu‐
lation UN R10. Wire
lessvehicle comp onents The
following information applies toall compo‐
nents of theve hicle and the information sy stems
and communication devices integrated into the
ve hicle which recei veand/or transmit radio
wav es:
The components of this vehicle that recei ve
and/or transmit radio wav es are compliant with
th e basic requ irements and all other releva nt
conditions of Directi ve2014 /53/EU. You can
obtain fur ther information from a Mercedes-Benz
Service Centre. 22
General no tes

of an accident,
rescue services can use the QR
code toquickly find the appropriate rescue card
fo ryo ur vehicle. The cur rent rescue card con‐
ta ins the most impor tant information about your
ve hicle in a compact form , e.g. thero uting of the
electric lines.
Fu rther information can be obtained at http://
www.mercedes-benz.de/qr-code. Data
storage Electronic control units
Elect
ronic control units are fitted in your vehicle.
Some of these are necessary forth e safe opera‐
tion of your vehicle, while some assist you when
driving (driver assis tance sy stems). In addition,
yo ur vehicle pr ovides com fort and enter tainment
functions, which are also made possible byelec‐
tronic control units.
Elect ronic control units contain da tamemories
which can temp orarily or permanently store
te ch nical information about theve hicle's operat‐
ing state, component loads, main tenance
re qu irements and tech nical events or faults. In
general, this information documents thest ate
of a component part, a module, a sy stem or the
sur roundings such as:
R operating status of sy stem components (e.g.
fi ll le vels, battery status, tyre pressure)
R status messages concerning theve hicle or
its individual components (e.g. number of
wheel revo lutions/speed, longitudinal accel‐
eration, lateral acceleration, display of fas‐
te ned seat belts)
R malfunctions or faults in impor tant sy stem
components (e.g. lights, brakes)
R information on events leading tovehicle
damage
R system reactions in special driving situations
(e.g. airbag deployment, inter vention of sta‐
bility control sy stems)
R ambient conditions (e.g. temp erature, rain
sensor)
In addition toprov iding the actual control unit
function, this data assists the manufacturer in
de tecting and rectifying faults and optimising
ve hicle functions. The majority of this data is te
mp orary and is only processed in theve hicle
itself. Only a small portion of the data is stored
in theeve nt or fault memor y.
When your vehicle is serviced, tech nical da ta
from theve hicle can be read out byservice net‐
wo rkemplo yees (e.g. workshops, manufactur‐
ers) or third parties (e.g. breakdown services).
Services include repair services, maintenance
processes, warranty claims and quality assur‐
ance measures, forex ample. The read out is per‐
fo rm ed via the legally prescribed port forthe
diagnostics connection in theve hicle. The
re spective service network locations or third
parties collect, process and use the data. They
document tech nical statuses of theve hicle,
assist in finding faults and impr oving quality and
are transmitted tothe manufacturer, if neces‐
sar y.Fu rthermore, the manufacturer is subject
to product liability. Forth is, the manufacturer
requ irestech nical da tafrom vehicles.
Fa ult memories in theve hicle can be reset by a
service outlet as part of repair or maintenance
wo rk. 26
General no tes

The co
mponents of there stra int sy stem can
be activated or deplo yed independently of
each other: Component De
tected deploy‐
ment situation
Seat belt tensioner sFrontal impact, rear
impact, side impact,
ro llo ver
Driver's airbag, front
passenger front air‐
bag Fr
ontal impact Knee airbag
Frontal impact Side impact airbag Side impact
Head airbag Side impact, rollo ver,
frontal impact The front passenger front airbag can only be
depl oyed in an accident if thePA SSENGER AIR
BA G OFF indicator lamp is off. If the front
passenger seat is occupied, make sure, bo th
before and during the journe y,that thest atus of th
e front passenger front airbag is cor rect
(/ page 40). &
WARNING Rick of burns from hot airbag
components
The airbag parts are hot af ter an airbag has
been depl oyed. #
Do not touch the airbag parts. #
Have a deplo yed airbag replaced at a
qu alified specialist workshop as soon
as possible. Mercedes-Benz
recommends that you ha vethe
ve hicle towe dto aqu alified specialist workshop
af te r an accident. Take this into account, partic‐
ularly if a seat belt tensioner is trig gered or an
airbag deplo yed.
If th e seat belt tensioners are trig gered or an air‐
bag is deplo yed, you will hear a bang, and a
small amount of powder may also be released:
R The bang will not generally af fect your hear‐
ing.
R Ingeneral, the powder released is not haz‐
ardous tohealth but may cause short-term breathing dif
ficulties topersons suf fering
from as thma or other pulmonary conditions.
Pr ov ided it is safe todo so, lea vetheve hicle
immediately or open the window in order to
pr eve nt brea thing dif ficulties. Seat belts
Pr
otection pr ovided bythe seat belt Alw
aysfast enyour seat belt co rrectly before
st arting a journe y.A seat belt can only pr ovide
th e best le vel of pr otection if it is worncor rectly. &
WARNING Risk of inju ryor death due to
incor rectly fastened seat belt
If th e seat belt is not worncor rectly, it can‐
not per form its intended pr otective function.
In addition, an incor rectly fastened seat belt
can also cause injuries, forex ample, in the
ev ent of an accident or when braking or
ch anging direction sudden ly. Occ
upant saf ety31

#
Never place objects under or behind
th ech ild restra int sy stem, e.g. cush‐
ions. #
Alw ays use child restra int sy stems with
th e original co ver designed forth em. #
Alw aysre place damaged co vers with
ge nuine co vers. &
WARNING Risk of inju ryor death from
unsecured child restra int sy stems in the
ve hicle
If th ech ild restra int sy stem is not cor rectly
ins talled or secured, it could release in the
ev ent of an accident, sudden braking or a
sudden change in direction.
The child restra int sy stem could be flung
around and hit vehicle occupants. #
Alw aysfit ch ild restra int sy stems cor‐
re ctly, even when not in use. #
Alw ays comply with thech ild restra int
sy stem manufacturer's ins tallation
instructions. R
Alw ays obser vethech ild restra int sy stem
manufacturer's ins tallation and operating
instructions as well as theve hicle-specific
information:
- Secure thech ild restra int sy stem with the
seat belt on the front passenger seat
(/ page 54). Obser vethe specific
instructions forth ere ar wa rd-facing and
fo rw ard-facing child restra int sy stems
(/ page 53).
If th e front passenger seat is occupied,
ensure, bo thbefore and during the jour‐
ne y,that thest atus of the front
passenger front airbag is cor rect forthe
cur rent situation (/ page 40).
R Obse rveth ewa rning labels in theve hicle
interior and on thech ild restra int sy stem.
Do not alter thech ild restra int sy stem &
WARNING Risk of inju rydue toaltera‐
tions tothech ild restra int sy stem
The child restra int sy stem may no longer
function as it is supposed toifyo u make alterations or attach objects
toit, e.g. toys or
unsuitable accessories. This poses an
increased risk of injury!
Ne ver alter thech ild restra int sy stem. Only
attach accessories which the manufacturer
of thech ild restra int sy stem has authorised
especially forth is ch ild restra int sy stem. Mercedes‑Benz
recommends Mercedes-Benz
care products for cleaning child restra int sys‐
te ms recommended byMercedes-Benz.
Only use child restra int sy stems which are in
proper working condition &
WARNING Risk of inju ryor death caused
by the use of damaged child restra int
sy stems
Child restra int sy stems or their retaining sys‐
te ms that ha vebeen subjec tedto a load in
an accident may then not be able toper form
th eir intended pr otective function.
The child cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction. Occupant saf
ety45

&
WARNING Risk of accident due to
exc essive speed during the soft-top
opening or closing procedure
If th eve hicle speed exceeds 60 km/h, the
soft topstops during the opening or closing
procedure.
This impairs your view tothere ar. #
Reduce theve hicle speed tobelow
60 km/h or stop theve hicle, paying
attention toroad and traf fic conditions. #
Ope rate the soft-to p switch again in
order toopen or close the soft top full y. The cur
rent procedu reisstopped at a speed
abo ve60 km/h. The Open/close top completely
messa gewill be shown on the multifunction dis‐
pla y. #
Reduce your speed and press or pull the soft-
to p switch 1again.
If th e soft top does not close fully because of
stro ng headwinds, drive more sl owly or stop. Re
locking the soft top &
WARNING Risk of becoming trapped
due tothe soft top lo wering unexpect‐
ed ly
If yo u do not fully open/close the soft top,
th e soft-to phy draulics depressurise af ter a
short time.
This causes the soft topto lowe r unexpect‐
edly and may cause you or others tobe trap‐
ped. #
Alw ays fully open or close the soft top. If
th e soft top has not been comple tely lo cked,
th e multifunction display sho ws theOpen/close
top completely message. In addition, you will
hear a warning tone for up toten seconds while
driving. #
Pull over and stop theve hicle safely as soon
as possible, paying attention toroad and traf‐
fi c conditions. #
Makesure that the ignition is switched on. #
Fully close the soft top using the soft-top
switch. Fi
tting and removing the draught stop &
WARNING Risk of accident and inju ry
due toan incor rectly fitted draught stop
If th e draught stop is not cor rectly fitted it
can come loose du ring the journey and
endanger other road users. #
Fitthe draught stop as described. #
Do not place objects on thefitted
draught stop. *
NO
TEThe draught stop can be damaged
if fitted when the soft top is closed The
vehicle interior or the draught stop can
be damaged if fitted when the soft top
closed. #
Tofit, open the soft top. Fi
tting
The folding draught stop is fitted between the
ro ll bars toprotect against wind when you are
driving with the soft top open. 74
Opening and closing

Overview of climate control sy
stems Note
s on climate control An interior air
filter must alw ays be used so that
th e air conditioning sy stem, pollution le vel moni‐
to ring and the air filtering function workcor‐
re ctly. Ma kesure that thefilter is ins talled cor‐
re ctly and thefilter housing in the engine com‐
partment is closed cor rectly using the cap and
alw ays tightly sealed when in operation. Use fil‐
te rs recommended and appr ovedby Mercedes-
Benz. Alw ays ha veservice workcar ried out at a
qu alified specialist workshop. THERMOTRONIC control panel
overview The indicator lamps in
the buttons Ã,¬,
¤, g,¿and0 indicate that the
cor responding function is activated. 1
w Setsthete mp erature on the driver's
side
2 _ Setsthe air distribution
3 H Setsthe air flow
Switches the climate control on/off
4 Ã Sets climate control toautomatic
mode (/ page110)
5 ¬ Defrosts the windscreen
6 t Calls up the air conditioning menu
7 ¤ Switches there ar wind owheater
on/off
8 0 Activates or deacti vates synchronisa‐
tion (/ page110) 9
g Switches air- recirculation mode on/
off(/ page 111 )
A ¿ Switches the A/C function on/off
(/ page 109)
B w Setsthe front passenger side temp era‐
ture Operating
the clima tecont rol sy stem Switching clima
tecont rol on/off #
Toswitch on: setthe air flow toleve l 1 or
higher using theH button. #
Toswitch off: setthe air flow toleve l 0 using
th eH button.
% If climate control is switched off, the win‐
do ws may mist up more quickl y.Switch off
climate control only brie fly. Switching
the A/C function on or off via the
cont rol panel The A/C function heats, cools and dehumidifies
th
eve hicle's interior air. Climate control
109

&
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 always depress the brake
pedal firm lyand do not accelerate at
th e same time. Limited braking ef
fect on salt-trea tedro ads:
R due tosalt build-up on the brake disks and
brakepads, the braking dis tance can increase
conside rably or result in braking only on one
side
R maintain a much greater safe dis tance tothe
ve hicle in front
To remo vethe la yer of salt:
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 Fu
nction of rear axle steering Depending on
the speed, rear axle steering
adapts the tra ckofthere ar axle tothe position
of the front wheels. Toge ther with thesteering
input of the front wheels, this results in greater
mobility 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. on cur ves
R more direct steering resulting in impr oved
control of theve hicle Tips
for the AMG ce ramic high-pe rformance
composite 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. Driving and pa
rking 117

Situation-dependent braking assistance
Situation-dependent braking assistance may
inter vene at speeds abo veappr oxima tely
7 km/h in thefo llowing situations:
Ve hicles tr avelling in
front Up
toappr ox.
250 km/h
St ationary vehicles Uptoappr ox.
70 km/h Cancelling a brake application of
Active
Brake Assi st
Yo u can cancel a brake application byActive
Brake Assi stat any time by:
R Fully depressing the accelerator pedal or
with kickdown.
R Releasing the brake pedal.
Ac tive Brake Assi stmay cancel the brake appli‐
cation when one of thefo llowing conditions is
fulfilled:
R You manoeuv retoavoid the obs tacle.
R The reis no longer a risk of collision. R
An obs tacle is no longer de tected in front of
yo ur vehicle.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
light conditions.
R Ifth e sensors are dirty, mis ted up, damaged
or co vered.
R Ifth e sensors are impaired due tointer fer‐
ence from other radar sources, e.g. strong
ra dar reflections in multi-s torey car par ks.
R If a loss of tyre pressure or a defective tyre
has been de tected and displ ayed.
R Full sy stem per form ance is not available for a
fe w seconds af ter switching on the ignition
or af ter driving off.
R In complex traf fic situations whe reobjects
cannot always be clearly identified.
R Forve hicles if they mo vequickly into the
sensor de tection range. R
On bends wi tha tight radius. Setting
Active Brake Assi st Multimedia sy
stem:
4 Vehicle 5
k Assistance
5 Active Brake Assist #
Activate or deacti vate the function.
% It is recommended that you alw ays lea ve
Ac tive Brake Assi stactivated.
% IfAc tive Brake Assi stis deactivated, the
æ symbol appears inthest atus bar of the
multifunction displa y. Fu
nction of Adaptive Brake Lights Ad
aptive Brake Lights warnfollowing traf fic in an
emergency braking situation wi th thefo llowing
actions:
R Byflashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds
abo ve50 km/h, the brake lamps flash rapidl y. 14 2
Driving and pa rking

Ac
tive Di stance Assist DISTRO NICFu
nction of Active Di stance Assist
DISTRO NIC Ac
tive Dis tance Assi stDISTRONIC maintains the
set speed on free-flowing roads. If vehicles in
front are de tected, the set dis tance is main‐
ta ined, if necessar y,until theve hicle comes to a
halt. The vehicle accelerates or brakes depend‐
ing on the dis tance totheve hicle in front and
th e set speed. The speed (in thera nge between
30 km/h and 200 km/h) and the dis tance tothe
ve hicle in front are set and sa ved on thesteering
wheel. Other
features of Active Dis tance Assi st
DISTRONIC:
R Adjusts the driving style depending on the
selected drive program (fuel-saving, comfort‐
able or dynamic) (/ page119)
R Initiates ac celerationtothestored speed if
th e turn signal indicator is switched on to
ch ange totheove rtaking lane.
Ac tive Dis tance Assi stDISTRONIC is only an aid.
The driver is responsible forke eping a safe dis‐
ta nce totheve hicle in front, forve hicle speed
and for braking in good time.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R In sno w,rain, 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. Driving and pa
rking 147