ignition MERCEDES-BENZ AMG GT COUPE 2018 Service Manual

#
Affix pa rt1 ofthe TIREFIT sticke rto the
instrument clus ter within the driver's field of
vision. #
Affix pa rt2 ofthe TIREFIT sticke r near the
va lve on the wheel with the defective tyre. #
Pull plug 4with the cable and hose 5out
of the tyre inflation compressor housing. #
Push the plug of hose 5into flange 6of
tyre sealant bottle 1until the plug engages. #
Place tyre sealant bottle 1head down wards
into recess 2ofthe tyre inflation compres‐
sor. #
Remo vetheva lve cap from valve 7 onthe
fa ulty tyre. #
Screw filling hose 8onto valve 7. #
Insert plug 4into a 12V soc ket in your
ve hicle. #
Switch on the ignition. #
Press on and off switch 3onthe tyre infla‐
tion compressor.
The tyre inflation compressor is switched on.
The tyre is inflated. Fir st, tyre sealant is pum‐
ped into the tyre. The pressure may brief ly
ri se toappr oximately 500 kPa (5 bar/73 psi).
Do not switch off the ty reinflation compres‐
sor during this phase! #
Let the tyre inflation compressor runfo r a
maximum of ten minu tes.
The tyre should then ha veattained a tyre
pressure of at least 200 kPa (2.0 bar/
29 psi).
If tyre sealant leaks out, make sure you clean the
af fected area as quickly as possible. It is prefera‐
ble touse clear water.
If yo uge t tyre sealant on your clo thing, ha veit
cleaned as soon as possible with per chloroe thy‐
lene. Breakdown assi
stance 323

All
vehicles
* NO
TEDama gecaused bynumerous or
ex tended attem ptsto start the engine Nume
rous or extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting
assis tance and when charging the battery:
R Only use undamaged jump lead/charging
cables with a suf ficient cross-section and
insula tedte rm inal clamps.
R Non- insulated parts of thete rm inal clamps
must not come into con tact wi thother me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-s tart connec‐
tion point.
R The jump lead/charging cable must not
come into contact wi thany parts which may
mo vewhen the engine is running. R
Alw ays make sure that nei ther you nor the
battery is elect rostatically charge d.
R Keep away from fire and naked flames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the battery:
R Only use battery charge rs tested and
appr oved for Mercedes-Benz.
R Read the battery charge r's operating instruc‐
tions before charging the batter y.
Obser vethe additional following points during
st arting assis tance:
R Starting assis tance may only be pr ovided
using batteries with a nominal voltage of
12 V.
R The vehicles must not touch.
R Petrol engine: only acceptstarting assis‐
ta nce if the engine and exhaust sy stem are
cold. St
arting assi stance and charging the12 V
battery Re
quirements:
R The vehicle is secured with the electric park‐
ing brake.
R Vehicles with automatic transmission: the
transmission is in position j.
R The ignition and all electrical consumers are
switched off.
R The bonnet is open. Breakdown assi
stance 329

only guaranteed with an
AGM battery or lith‐
ium-ion batter y.Fo r saf etyre asons,
Mercedes-Benz recommends that you on ly
use bat teries which ha vebeen tested and
appr ovedfo ryo ur vehicle byMercedes-Benz.
R Carryove r de tach able parts, such as vent
hoses, elbow fittings or term inal co vers from
th e battery being replaced.
R Make sure that theve nt hose is al ways con‐
nected tothe original opening on the side of
th e batter y.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape. R
Make sure that de tach able parts are recon‐
nected in the same way. To
w- starting or towing away Pe
rm itted towing me thods Mercedes-Benz
recommends transporting your
ve hicle in the case of a breakdown, rath er than
to wing it away.
Fo rto wing, use a tow rope or tow bar with bo th
axles on the ground. Do not use tow bar sys‐
te ms. &
WARNING Risk of accident when towing
with steering wheel lock
Yo u will no lon ger be able tosteer theve hicle
if th esteering wheel lock is engaged. #
Alw ays switch on the ignition when tow‐
ing theve hicle with a tow cable or a tow
bar. *
NO
TEDama getotheve hicle due to tow‐
ing away incor rectly #
Obser vethe instructions and no tes on
to wing away. Pe
rm itted towing me thods Bo
th axles on thegr ound Fr
ont axle raised Re
ar axle raised
Ye s, maximum 50 km at 50 km/h No No Breakdown assis
tance 331

#
Do not acti vate the HOLD function. #
Deactivate tow- aw ay protection
(/ page 72). #
Deactivate Active Brake Assi st
( / page 137). #
Vehicles with automatic transmission:
shift the automatic transmission toposition
i. #
Release the electric parking brake. &
WARNING Risk of accident due tolimi‐
te d saf ety-re lated functions during the
to wing process
Saf ety-re lated functions are limited or no lon‐
ge rav ailable in thefo llowing situations:
R the ignition is switched off.
R the brake sy stem or po werst eering sys‐
te m is malfunctioning.
R the energy supply or the on-board electri‐
cal sy stem is malfunctioning. When
your vehicle is then towe daw ay, signif‐
icantly more ef fort may be requ ired tosteer
and brake than is no rmally requ ired. #
Use a tow bar. #
Make sure that thesteering wheel can
mo vefreely, before towing theve hicle
aw ay. *
NO
TEDama gedue toexcessive tracti ve
po wer If
yo u pull away sharpl y,the tractive po wer
may be too high and theve hicles could be
damaged. #
Pull away slowly and smoo thly. Loading the
vehicle for transport #
Obser vethe no tes on towing away
( / page 332). #
Connect theto w bar totheto wing eye in
order toload theve hicle. #
Shift the automatic transmission toposition
i.
% The automatic transmission may be loc ked
in position jintheeve nt of dama getothe
electrics. Toshift toi , pr ovide the on-
board electrical sy stem with po wer
( / page 329). #
Load theve hicle onto the transpor ter. #
Shift the automatic transmission toposition
j. #
Use the electric parking brake tosecure the
ve hicle against rolling away. #
Only secure theve hicle bythe wheels.
Ve hicles with ADS PLUS (Adaptive Damping
Sy stem PLUS) &
WARNING Risk of an accident when
transporting vehicles with Adaptive
Damping Sy stem PLUS
The reduced damping forc es on theve hicle
being transpor ted can cause theve hicle/
trailer combination tostart toswing. Breakdown assis
tance 333

Blown fuses must be
replaced with fuses of the
same rating, which you can recognise bythe col‐
our and fuse rating. The fuse ratings and fu rther
information tobe obser ved are lis ted in the fuse
assignment diagram.
Fu se assignment diag ram: onthe fuse box in
th e load compartment .
* NO
TEDama geor malfunctions caused
by moisture Moisture may cause dama
getothe electrical
sy stem or cause it tomalfunction. #
When the fuse box is open, make sure
th at no moisture can enter the fuse
box. #
When closing the fuse box, make sure
th at the seal of the lid is positioned cor‐
re ctly on the fuse box. If
th e newly inser ted fuse also blo ws, ha vethe
cause traced and rectified at a qualified special‐
ist workshop, e.g. a Mercedes-Benz Service
Centre. Ensure
thefo llowing before replacing a fuse:
R The vehicle is secured against rolling away.
R All electrical consumers are switched off.
R The ignition is switched off.
The electrical fuses are located in various fuse
bo xes:
R Fuse box in the front passenger foot we ll
(/ page 336)
R Fuse box in the load compartment on the
left-hand side of theve hicle, when vie wed in
th e direction of tr avel Opening and closing
the fuse box in the front
passenger foot we ll Obser
vethe no tes on electrical fuses
(/ page 335). Opening #
Remo vecarpet 1over thefo ot re st. 336
Breakdown assis tance

New tyre pressure sensors, e.g. in winter tyres,
are automatically
taught-in during thefirs t jour‐
ney they are used.
The tyre pressure and the tyre temp erature
appear in the multifunction display
(/ page 341).
If th ere is a subs tantial pressure loss or if the
tyre temp erature is excessive, you will be
wa rned in thefo llowing ways:
R via display messa ges
( / page
398)
R viatheh warning lamp in the instrument
clus ter (/ page 423)
The tyre pressu remonitoring sy stem is only an
aid. It is the driver's responsibility toset the tyre
pressure tothere commended cold tyre pressure
suitable forth e operating situation. Set the tyre
pressure for cold tyres using a tyre pressu re
ga uge. Notethat the cor rect tyre pressure for
th e cur rent operating situation mu stfirs t be
tau ght-in tothe tyre pressure monitoring sys‐
te m. In most cases,
the tyre pressure monitoring sys‐
te m will auto matically update the new refere nce
va lues af teryo u ha vechanged the tyre pressure.
Yo u can, ho wever,also update there fere nce val‐
ues byrestarting the tyre pressure monitoring
sy stem manually (/ page 342).
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
R ifth e tyre pressure is set incor rectly
R ifth ere is a sudden pressure loss caused, for
ex ample, byafo re ign object penetrating the
tyre
R ifth ere is a malfunction caused byano ther
ra dio signal source
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R notes on tyre pressure (/ page 339)
Checking the ty repressure with the tyre
pressure moni toring sy stem
Requ irements:
R The ignition is switched on. On-board computer:
4 Service 5
Tyres
One of thefo llowing displa ysappears:
R Cur rent tyre pressure and tyre temp erature
of the individual wheels: R
Tyre pressures will be displayed after a few
minutes of driving
R Tyre pressure monitor active: thete ach-in
process of the sy stem is not yet compl ete.
The tyre pressures are already being moni‐
to re d. #
Compare the tyre pressure with there com‐
mended tyre pressure forth e cur rent operat‐ Wheels and tyres
341

Operating
fluids include thefo llowing:
R fuels
R lubricants
R coolant
R brake fluid
R windsc reen washer fluid
R climate cont rol sy stem refrigerant
Only use products app rove dby Mercedes-Benz.
Damage caused bythe use of products that ha ve
not been appr oved is not co veredby the
Mercedes-Benz warranty or goodwill gestures.
Yo u can identify operating fluids appr ovedby
Mercedes-Benz bythefo llowing insc ript ions on
th e conta iner:
R MB- Freigabe (e.g. MB-Fr eigabe 229.51 )
R MB-Appr oval (e.g. MB-App rova l 229.51)
Fu rther information on appr oved operating fluids
is available at thefo llowing locations:
R inthe Mercedes-Benz Specifications for
Operating Fluids byentering the designation
- at http://be vo.mercedes-benz.com -
inthe Mercedes-Benz BeVo App
R at a qualified specialist workshop &
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. #
Fire, naked flames, smoking and crea‐
tion of spar ksmust be avoided. #
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fuelling theve hicle. &
WARNING Risk of inju ryfrom fuels
Fu els are poisonous and hazardous to your
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed du ring
th ere fuelling process. If
yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediately rinse fuel off your skin with
soap and water. #
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. #
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. #
Change immediately out of clo thing that
has come into con tact wi thfuel. Fu
el Information on fuel
grades forve hicles with
petrol engines
Obser vethe no tes on operating fluids
(/ page 360). Te
ch nical da ta361

*
NO
TEDama gecaused bythe wrong fuel Even small amounts of
the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem. #
Only refuel using unleaded, sulphu r-free
fuel that con form sto European EN 228,
or an equi valent specification.
Fu el of this specification may con tain up to
10 vol. % ethanol. Your vehicle is suitable for
use with E10 fuel.
Ne verre fuel using:
R diesel
R regular petrol with an octane number
lo we rth an 91 RON
R petrol with more than 10 vol. % ethanol
e.g. E15, E20, E85, E100
R petrol with more than 3 vol. % me thanol
e.g. M15, M30
R petrol with additives con taining me tal
If yo u acciden tally refuel with the wrong fuel: #
do not switch the ignition on. #
consult a qualified specialist workshop. The
following compatibility indications for fuel
apply to yourvehicle: 1
For petrol with maximum 5% ethanol byvol‐
ume
2 For petrol with maximum 10%ethanol by vol‐
ume
Ac cording toEuropean standard EN 1694 2you
can find the compatibility indications at thefo l‐
lowing locations:
R onthe instruction label on the fuel filler flap R
onthe fuel pump or pump nozzle suitable for
yo ur vehicle thro ughout Europe
If th eav ailable fuel is not suf ficiently low in sul‐
phu r,th is can produce unpleasant odours.
Obser vethe information on sulphur conte nt on
th e instruction label in the fuel filler flap: *
NO
TEDama getothe emission control
sy stem caused byfuel with a too high
sulphur content #
Only use sulphur-free fuel (sulphur con‐
tent ≤ 10ppm). 362
Tech nical da ta

Saf
ety sy stems Display messages
Possible causes/consequences and M
MSolutions
÷ currently unavailable See
Owner's Manual *
ESP ®
is temp orarily una vailable.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. #
Carefully drive on a suitable stre tch of road, making slight steering mo vements at a speed abo ve30 km/h. #
Ifth e display message does not disappear, consult a qualified specialist workshop immediately. Drive carefully.
!
Turn on the ignition to
release the parking brake *
The red! indicator lamp is lit.
Yo u ha veattem ptedto release the electric parking brake with the ignition switched off. #
Switch the ignition on. 37 0
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
! Parking brake See Owner's
Manual *
The yellow ! indicator lamp is lit. The elect ric pa rking brake is malfunctioning.
To appl y: #
Switch off the ignition and switch it back on. #
Apply the electric parking brake manually (/ page129).
If it is not possible toapply the electric parking brake: #
Consult a qualified specialist workshop. #
Where necessar y,also safeguard the par kedve hicle against rolling away.
The yellow ! indicator lamp and there d! indicator lamp are lit. The elect ric pa rking brake is malfunction‐
ing.
To release: #
Swit choff the ignition and switch it back on. #
Release the electric parking brake manually (/ page129).
or #
Release the electric parking brake automatically (/ page128).
If it is still not possible torelease the electric parking brake: #
Do not continue driving under any circums tances. Consult a qualified specialist workshop.
The yellow ! indicator lamp is lit and there d! indicator lamp is flashing. The electric parking brake is mal‐
functioning.
The electric parking brake could not be applied or released. Display messages and
warning/indicator lamps 371