MERCEDES-BENZ AMG GT COUPE 2018 Owner's Manual

GWARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a tire
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached
GWARNING
A tire temporarily sealed with tire sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed the specified maximum speed with a tire that
has been repaired using tire sealant.
The maximum permissible speed for a tire
sealed with tire sealant is 50 mph (80 km/h).
The upper part of the TIREFIT sticker must be
affixed to the instrument cluster in the driver's
field of vision.
!Residue from the tire sealant may come out
of the filler hose after use. This could cause
stains.
Therefore, place the filler hose in the plastic
bag which contained the TIREFIT kit.
HEnvironmental note
Have the used tire sealant bottle disposed of
professionally, e.g. at a qualified specialist
workshop.
If a tire pressure of 180 kPa (1.8 bar/26 psi) has
been attained after five minutes:
XSwitch off the tire inflation compressor.
XUnscrew the filler hose from the valve of the
faulty tire.
Tire sealant may escape when the filler hose is
unscrewed.
XStow the tire sealant bottle and the tire infla-
tion compressor.
XPull away immediately.
XStop after driving for approximately ten
minutes and check the tire pressure with the
tire inflation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi).
GWARNING
If the required tire pressure is not reached
after driving for a short period, the tire is too
badly damaged. The tire sealant cannot repair
the tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
iIn cases such as the one mentioned above,
contact an authorized Mercedes-Benz Cen-
ter. Or call 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada).
XCorrect the tire pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the Tire and
Loading Information placard on the driver's
side B-pillar or the tire pressure table in the
fuel filler flap for values.
XTo increase the tire pressure: switch on the
tire inflation compressor.
XTo reduce the tire pressure: depress pres-
sure release button :next to pressure
gauge ;.
XWhen the tire pressure is correct, unscrew the
filler hose from the valve of the sealed tire.
Tire sealant may escape when the filler hose is
unscrewed.
XScrew the valve cap onto the tire valve of the
sealed tire.
Flat tire249
Breakdown assistance
Z

XPull the tire sealant bottle out of the tire infla-
tion compressor.
The filler hose remains attached to the tire
sealant bottle.
XDrive to the nearest qualified specialist work-
shop and have the tire changed there.
XHave the tire sealant bottle replaced as soonas possible at a qualified specialist workshop.
XHave the tire sealant bottle replaced every
four years at a qualified specialist workshop.
Battery (vehicle)
Important safety notes
Special tools and expert knowledge are required
when working on the battery, e.g. removal and
installation. You should therefore have all work
involving the battery carried out at a qualified
specialist workshop.
GWARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g. the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP
®(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted.
You could lose control of the vehicle, for
example:
Rwhen braking
Rin the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar inci-
dent, contact a qualified specialist workshop
immediately. Do not drive any further. You
should have all work involving the battery car- ried out at a qualified specialist workshop.
For further information about ABS (
Ypage 57)
and ESP®(Ypage 61).
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
!Have the battery regularly checked at a
qualified specialist workshop.
For more information, please contact a quali-
fied specialist workshop.
!Always have work on batteries carried out at
a qualified specialist workshop.
Should it, in exceptional circumstances, be
absolutely necessary to disconnect the 12-
volt battery yourself, please observe the fol-
lowing:
RSecure the vehicle to prevent it from rolling
away.
RSwitch off the ignition.
RDisconnect the negative terminal first and
then the positive terminal.
The transmission is locked in position j
after disconnecting the battery.
After the work has been done, install the bat-
tery and replace the cover of the positive ter-
minal clamp firmly.
Comply with safety precautions and take pro-
tective measures when handling batteries.
Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the bat-
tery. Avoid creating sparks.
250Battery (vehicle)
Breakdown assistance

The electrolyte of the battery is cor-
rosive. Avoid contact with skin, eyes
or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Immediately rinse electrolyte
splashes off with clean water. Con-
tact a physician if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehicle
occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum
possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle.
In this case, have the battery disconnected at a
qualified specialist workshop. You can also
charge the battery with a special charger rec-
ommended by Mercedes-Benz. Contact a quali- fied specialist workshop for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly for
short trips or if you leave it standing idle for a
lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked for a long period of time.
When you use the SmartKey in the ignition and
you park the car, remove the SmartKey if you do not require any electrical consumers. The vehi-
cle will then use very little energy, thus conserv-
ing battery power.
If the power supply has been interrupted, e.g. if
you reconnect the battery, you will have to:
Rreset the function for automatically folding
the exterior mirrors in/out by folding the mir-
rors out once (
Ypage 87)
Rreset the side windows, see (Ypage 77)
Charging the battery
!
Only use battery chargers with a maximum
charging voltage of 14.4 V.
!Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment (
Ypage 251).
XOpen the hood.
XConnect the battery charger to the positive
terminal and ground point in the same order
as when connecting the donor battery in the
jump-starting procedure (
Ypage 251).
Keep away from fire and open flames. Do not
lean over a battery. Never charge the battery if it
is still installed in the vehicle, unless you use a
battery charger which has been tested and
approved by Mercedes-Benz. A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. It permits the
charging of the battery in its installed position.
Contact an authorized Mercedes-Benz Center
for further information and availability. Read the
battery charger's operating instructions before
charging the battery.
Do not charge a battery which has been
removed at low temperatures with a battery
charger. Allow the battery to warm up gently
first, if necessary. Otherwise, the service life can
be shortened and the starting characteristics
impaired, especially at low temperatures.
Jump-starting
XFor the jump-starting procedure, use only the jump-starting connection point in the engine com- partment, consisting of a positive terminal and a ground point.
Jump-starting251
Breakdown assistance
Z

!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
XDo not start the vehicle using a rapid charging device.
If your vehicle's battery is discharged, the engine can be jump-started from another vehicle or
from a donor battery using jumper cables.
The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-start
the vehicle using a donor battery or a jump-starting device.
Observe the following during the jump-starting procedure:
Rthe jumper cables must not come into contact with parts that can move when the engine is
running, such as the V-belt pulley or the fan.
Rnon-insulated parts of the terminal clamps must not come into contact with other metal parts
while the jumper cables are connected to the battery and the jump-starting connection point.
Ronly use jumper cables that are not damaged and have a sufficient cross-section and insulated
terminal clamps.
Rjump-starting may be performed only using batteries with a nominal voltage of 12 V.
Ryou may only jump-start the vehicle when the engine and exhaust system are cold.
Rthe vehicles must not touch each other.
RIf the battery is fully discharged, leave the battery that is being used to jump-start connected for
a few minutes before attempting to start. This charges the battery slightly.
XSecure the vehicle by applying the electric parking brake.
XShift the transmission to position j.
XMake sure the ignition and all electrical consumers are switched off.
All indicator lamps in the instrument cluster must be off. When using the SmartKey, turn the
SmartKey to positionuin the ignition lock and remove it (
Ypage 106).
XOpen the hood.
iRight-hand-drive vehicle: the jump-starting connection points may be located on the other
side of the vehicle.
Vehicles with a carbon-fiber engine cover
XTo remove the cover: turn fasteners:aÕ turn and remove.
252Jump-starting
Breakdown assistance

All vehicles:
XSlide cover Aof positive terminal :inthe direction of the arrow.
XConnect positive terminal :on your veh icleto positive terminal ;of donor battery Busing the
jumper cable. Always begin with positive terminal :on your own vehicle first.
XStart the engine of the donor veh icleand run itat idling speed.
XConnect negative terminal =of donor battery Bto ground point ?of your vehicle using the
jumper cable. Beg in with donor battery Bfirst.
XStart the engine of your own veh icle.
XLet the engines run for several minutes.
XBefore disconnecting the jumper cables, switch on an electrical consumer inyour own vehicle,
e.g. the rear window heating or the lighting.
XWhen the jump-starting procedu reis finished: first, remove the jumper cables from ground
poin t? and from negative terminal =of the donor battery, and then from positive terminal :
and positive terminal ;of the donor battery. Begin each time at the contacts on your own vehicle
first.
XAfter removing the jumper cables, close cover Aof positive terminal :.
XOnly for vehicles with a carbon-fiber engine cover: insert the cover of the jump-starting
connection point. Make sure all mountings for the fasteners are positioned precisely behind the
corresponding recesses inthe cover.
Press the fasteners into the mountings. Turn the fasteners by Õof a turn to engage.
XHave the battery checked at a qualified specialist workshop.
Jump-starting isnot cons idered to bea normal operating condition.
iJumper cables and further information regarding jump-starting can be obtained at a qualified
specialist workshop.
Jump-starting253
Breakdown assistance
Z

Towing and tow-starting
Important safety notes
GWARNING
The rear axle locks when:
Rthe engine is not running
Rthe engine stalls while the vehicle is being
towed
Rthere is a malfunction in the power supply
or the vehicle's electrical system
There is a risk of an accident.
In the event of a breakdown, you should
always have the vehicle transported.
GWARNING
If the brake system or power steering is mal-
functioning and your vehicle is then towed
away, significantly more effort may be
required to steer and brake than is normally
required. There is a risk of an accident.
In such cases, use a tow bar. Before towing,
make sure that the steering moves freely.
GWARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible
gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
Details on the permissible gross vehicle weight
of your vehicle can be found on the vehicle iden-
tification plate (
Ypage 282).
!Use the SmartKey instead of the Start/Stop
button when towing the vehicle.
Start the engine and keep it running. The
SmartKey is in position 2in the ignition lock.
Set the transmission to iusing the E-
SELECT selector lever. Make sure that you
then leave the SmartKey in position 2.Check the transmission position in the instru-
ment cluster.
!Make sure that the electric parking brake is
released. If the electric parking brake is faulty,
visit a qualified specialist workshop.
!Secure the tow rope or tow bar to the towing
eye only. Otherwise, the vehicle could
become damaged.
!When Active Brake Assist, Distance Pilot
DISTR ONIC or the HOLD function is activated,
the vehicle brakes automatically in certain
situations.
To avoid damage to the vehicle, deactivate
these systems in the following or similar sit-
uations:
Rwhen towing the vehicle
Rin the car wash
!Do not use the towing eyes for recovery pur-
poses as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
!When towing, pull away slowly and
smoothly. If the tractive power is too high, the
vehicles could be damaged.
!Shift the automatic transmission to position
i and do not open the driver's or front-
passenger door when towing the vehicle
away. Otherwise, the automatic transmission
may shift to position jwhich can cause
damage to both vehicles.
!Do not tow with sling-type equipment. This
could damage the vehicle.
!The vehicle can be towed a maximum of
30 miles (50km). The towing speed of 30 mph
(50 km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the entire vehicle must be
raised and transported.
!Observe the transmission fluid temperature
(AMG menu) in the on-board computer when
towing. The transmission fluid temperature
must not exceed 250 ‡ (
120 †). If this
occurs, you must stop towing immediately.
!Tow-starting the vehicle is not permitted.
The transmission may otherwise be damaged.
254Towing and tow-starting
Breakdown assistance

Also observe the following notes:
RIf the engine does not start, try jump-starting
it (Ypage 251). Tow-starting the vehicle is not
permitted.
RIf it is not possible to jump-start the vehicle,
have it transported to the nearest qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
If the vehicle can no longer be driven because of
an accident or breakdown, you have the follow-
ing options:
Rtransporting the vehicle
As a rule, you should have the vehicle trans-
ported.
Rtowing the vehicle with a tow rope or tow bar
Only tow the vehicle in exceptional cases. The
engine must be running if you tow the vehicle
with a tow rope or tow bar.
If the vehicle has suffered transmission damage,
have it transported on a transporter or trailer.
Observe the display messages in the instrument
cluster.
The battery must be connected and charged.
Otherwise, you:
Rwill not be able to switch on the ignition with
the Start/Stop button
Rcannot start the engine
Rcannot release the electric parking brake
Rcannot shift the automatic transmission to
position i
Disarm the automatic locking feature before the
vehicle is towed (
Ypage 72). You could other-
wise be locked out when pushing or towing the
ve
hicle.
Installing/removing the towing eye
Installing the towing eye
The bracket for the screw-in towing eye is
behind the radiator trim.
XRemove the towing eye from the vehicle tool
kit (Ypage 245).
XPull out cover :.
XScrew in the towing eye clockwise to the stop.
Removing the towing eye
XLoosen the towing eye and unscrew it.
XFully reinsert cover :.
XPut the towing eye back into the vehicle tool
kit.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle
(
Ypage 254).
The automatic transmission automatically shifts
to position jwhen you open the driver's or
front-passenger door or when you remove the
SmartKey from the ignition lock. In order to
ensure that the automatic transmission stays in
position iwhen towing away the vehicle, you
must observe the following points:
XInsert the SmartKey into the ignition lock. You
must use the SmartKey instead of the Start/
Stop button (
Ypage 106).
XStart the engine and leave it running during
the entire towing procedure.
XDepress and hold the brake pedal.
XMove the transmission to position iwith the
E-SELECT lever.
XCheck the transmission position using the
indicator in the multifunction display
(
Ypage 114).
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch on the hazard warning lamps
(Ypage 93).
Towing and tow-starting255
Breakdo wn assis tance
Z

In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch
as usual. In this case, only the indicator lamps
for the direction of travel flash. After resetting
the combination switch, the hazard warning
lamp starts flashing again.
Transporting the vehicle
!When the vehicle is loaded for transport, the
front and rear axles must be stationary and on the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
!You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur- poses.
XInsert the SmartKey into the ignition lock. You
must use the SmartKey instead of the Start/
Stop button (
Ypage 106).
XStart the engine and leave it running during
the entire loading operation.
XMove the transmission to position iwith the
E-SELECT lever.
XCheck the transmission position using the
indicator in the multifunction display
(
Ypage 114).
As soon as the vehicle has been loaded:
XPrevent the vehicle from rolling away by
applying the electric parking brake.
XShift the automatic transmission to position
j.
XTurn the SmartKey to key position uin the
ignition lock and remove it.
XSecure the vehicle.
Tow-starting (emergency engine
starting)
!
Vehicles with automatic transmission must
not be tow-started. You could otherwise dam-
age the automatic transmission.
iYou can find information on "Jump-starting"
under (Ypage 251).
Fuses
Important safety notes
GWARNING
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher amper- age, the electric cables could be overloaded.
This could result in a fire. There is a risk of an
accident and injury.
Always replace faulty fuses with the specified
new fuses having the correct amperage.
Blown fuses must be replaced with fuses of the
same rating, which you can recognize by the
color and value. The fuse ratings are listed in the
fuse allocation chart.
The fuse allocation chart is on the fuse box in the
cargo compartment (
Ypage 257).
If a newly inserted fuse also blows, have the
cause traced and rectified at a qualified special-
ist workshop, e.g. an authorized Mercedes-Benz Center.
!Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the system concerned.
Otherwise, components or systems could be
damaged.
!Make sure that no moisture can enter the
fuse box when the cover is open.
!When closing the cover, make sure that it is
lying correctly on the fuse box. Moisture seep-
ing in or dirt could otherwise impair the oper-
ation of the fuses.
256Fuses
Breakdown assistance

The fuses in your vehicle serve to close down
faulty circuits. If a fuse blows, all the compo-
nents on the circuit and their functions stop
operating.
Before changing a fuse
XSwitch off the engine.
XSwitch off all electrical consumers.
XOpen the driver's door.
The on-board electronics are now in key posi-
tionu. This is the same as the key having
been removed.
or, if the SmartKey is inserted in the ignition
lock:
XRemove the SmartKey from the ignition lock.
XSecure the vehicle against rolling away
(Ypage 122).
All indicator lamps in the instrument cluster
must be off.
Fuse box in the front-passenger foot-
well
!
The floor panel must be installed properly,
otherwise moisture or dirt could impair the
function of the fuses.
XOpen the front-passenger door.
XTo open: remove the carpet over the footrest.
XLoosen screws :on the floor panel using a
suitable tool.
XRemove the floor panel.
XTo close: install the floor panel again.
XScrew in and tighten screws :.
XPut in the carpet and press to secure.
Fuse box in the cargo compartment
XOpen the tailgate.
XTo open:turn fastener ;on the service flap
counter-clockwise.
XOpen service flap :.
iThe fuse allocation chart is located in a
recess at the side of the fuse box. You can find
the corresponding fuse rating and fuse type
on the fuse allocation chart.
Fuses257
Breakdown assistance
Z

Important safety notes
GWARNING
If wheels and tires of th ewrong siz eare used,
th ewhee lbrakes or suspension component s
may be damaged. Ther eis aris kof an acci-
dent.
Always replace wheels and tires wit hthose
that fulfill th especification sof th eoriginal
part .
When replacing wheels, mak esur eto use th e
correct:
Rdesignation
Rmodel
When replacing tires ,mak esur eto use th e
correct:
Rdesignation
Rmanufacturer
Rmodel
GWARNIN G
A flat tire severely impairs th edriving ,steer -
ing and braking characteristics of th evehicle.
Ther eis aris kof accident.
Tires without run-flat characteristics :
Rdo notdriv ewit h a flat tire.
Rimmediately replace th eflat tire wit hyour
emergenc yspar ewhee lor spar ewheel, or
consult aqualified specialist workshop.
Tires wit hrun-flat characteristics :
Rpay attention to theinformation and warn -
ing notice son MOExtended tires (tire swit h
run-flat characteristics).
Accessories that are no tapprove dfor your vehi-
cle by Mercedes-Ben zor are no tbein gused cor-
rectl ycan impair th eoperating safety.
Before purchasing and usin gnon-approve d
accessories, visit aqualified specialist work-
sho pand inquire about :
Rsuitability
Rlegal stipulation s
Rfactory recommendation sInformation on th
esizes and types of wheels and
tires for your vehicl ecan be foun dunder
"Wheel/tire combinations" (
Ypage 280).
Tir epressur einformation can be found:
Ron th eTir eand Loading Information placard
on th eB-pillar on th edriver' sside
(
Ypage 266)
Rin th etire pressur etable in th efuel filler flap
(Ypage 121)
Rin th e"Tir epressure" section
Operation
Information on driving
Chec kth etire pressur ewhen th evehicl eis
heavily laden and adjust prio rto atrip.
While driving ,pay attention to vibrations, noises
and unusual handlin gcharacteristics ,e.g. pull-
ing to on eside .This may indicat ethat th e
wheels or tires are damaged. If you suspec tthat
a tire is defective, reduce your spee dimmedi-
ately. Stop th evehicl eas soo nas possible to
chec kth ewheels and tires for damage. Hidden
tire damag ecould also be causing th eunusual
handlin gcharacteristics .If you fin dno sign sof
damage, hav eth etires and wheels checke dat a
qualified specialist workshop.
When parking your vehicle, mak esur ethat th e
tires do no tget deformed by th ecur bor other
obstacles. If they canno tbe avoided, driv eove r
obstacles suc has curbs slowly and at an obtuse
angle. Otherwise, you may damag eth ewheels
or tires .
Notes on high performance tires
GWARNIN G
Due to th especial tire tread in combination
wit hth eoptimized rubber compound ,there is
an increased ris kof hydroplaning and skid-
din gon damp or wet road surfaces. In addi-
tion ,tire traction is significantly reduce dat
low outside temperatures and low tire-oper -
ating temperatures .Ther eis aris kof an acci-
dent.
Activat eES P
®and adapt your driving style. At
outside temperatures belo w50 ‡(10 †), use
M+S tires.
258Operation
Wheels and tires