2018 MERCEDES-BENZ AMG GT ROADSTER snow chains

Anti-lock braking systemsee ABS (Anti-lock Braking System)
Anti-skid chains
see Snow chains
Anti-theft ala rmsystem
see ATA (Anti-Theft Alarm system)
Asht ray.............................................. .220
Assistance display (on-board com-
puter) ..................................................1 67
Assistance menu (on-board com-
puter) ..................................................1 68
Assistance system
see Driving systems
ASSYST PLUS
Displaying a service message ........2 40
Hiding a service message .............. 239
Resetting the service interval dis-
play ................................................ 240
Service message ............................ 239
Special service requirements ......... 240
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 64
Function ...........................................6 4
Switching off the alarm .................... 64
ATTENTION ASSIST
Activating/deactivating ................. 168
Display message ............................ 188
Function/notes ............................. 153
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 185
see Lights
Automatic car wash (care) ............... 241
Automatic engine start (ECO start/
stop function) .................................... 114
Automatic engine switch-off (ECO
start/stop function) .......................... 113
Automatic headlamp mode ................ 96
Automatic transmission
Accelerator pedal position ............. 120
Automatic drive program ............... 122
Changing gear ............................... 120
Display message ............................ 193
Double-clutch function .................. 120Dri
ve program display .................... 119
Driving tips .................................... 120
Emergency running mode .............. 125
Engaging neutral ............................ 118
Engaging park position automati-
cally ............................................... 118
Engaging reverse gear ................... 118
Engaging the park position ............ 118
Gearshift recommendation ............ 123
Gliding mode ................................. 120
Important safety notes .................. 117
Kickdown ....................................... 120
Manual drive program .................... 122
Manual mode ................................. 123
Oil temperature (on-board com-
puter) ............................................. 170
Overview ........................................ 117
Problem (malfunction) ................... 125
Pulling away ................................... 112
Rocking the vehicle free ................ 120
Shift override ................................. 124
Starting the engine ........................ 112
Steering wheel paddle shifters ...... 121
Transmission position display ........ 119
Transmission positions .................. 119
Automatic transmission emer-
gency mode ....................................... 125
B
Back button ....................................... 209
BAS (Brake Assist System) ................. 59
Basic settings
see Settings
Battery (SmartKey)
Checking .......................................... 69
Important safety notes .................... 68
Replacing ......................................... 69
Battery (vehicle)
Charging ........................................ 254
Display message ............................ 187
Important safety notes .................. 253
Jump starting ................................. 254
Belt
see Seat belts
Belt warning ......................................... 44
Index5

Driver's door
see Doors
Driver's sea t
see Seat
Driving
Importan tsafet ynote s.................. 10 9
Driving abroad
Mercedes-Ben zService ................ .240
Driving on flooded roads .................. 134
Driving safety system
Active Brake Assist .......................... 59
Braking assistance appropriate to
the situation ..................................... 61
Driving safety systems
ABS (Anti-lock Braking System) ....... 58
ADAPTIVE BRAKE .............................6 4
BAS (Brake Assist System) .............. 59
Distance warning function ............... 60
EBD (electronic brake force distri-
bution) ............................................. 64
ESP
®(Electronic Stability Pro-
gram) ............................................... 62
Important safety information ........... 58
Overview .......................................... 58
Driving system
Distance Pilot DISTRONIC ............. 136
Parking assist PARKTRONIC .......... 147
Driving systems
AMG adaptive sport suspension
system ........................................... 147
ATTENTION ASSIST ........................ 153
Blind Spot Assist ............................ 155
Cruise control ................................ 134
Display message ............................ 188
HOLD function ............................... 144
Lane Keeping Assist ...................... 157
Lane Tracking package .................. 155
RACE START .................................. 145
Rear view camera .......................... 150
Driving tips
AMG high-performance and
ceramic brakes .............................. 133
Automatic transmission ................. 120
Brakes ........................................... 132
Break-in period .............................. 109
Distance Pilot DISTRONIC ............. 142
Downhill gradient ........................... 132
Drinking and driving ....................... 131 Driving in winter ............................. 134
Driving on flooded roads ................ 134
Driving on wet roads ...................... 134
Exhaust check ............................... 131
Fuel ................................................ 131
General .......................................... 131
Hydroplaning .................................
134
Icy ro

ad surfaces ........................... 134
Important safety notes .................. 109
Limited braking efficiency on sal-
ted roads ....................................... 132
Snow chains .................................. 263
Subjecting brakes to a load ........... 132
The first 1000 miles (1500 km) ..... 109
Wet road surface ........................... 132
DVD video
Operating (on-board computer) ..... 166
see also Digital Operator's Man-
ual .................................................. 208
DYNAMIC SELECT controller ............ 116
E
E-SELECT lever................................... 117
EASY-ENTRY feature
Function/notes ................................ 90
EASY-EXIT feature
Function/notes ................................ 90
EBD (electronic brake force distri-
bution)
Display message ............................ 177
Function/notes ................................ 64
ECO start/stop function
Automatic engine switch-off .......... 113
Deactivating/activating ................. 114
General information ....................... 113
Important safety notes .................. 113
Introduction ................................... 113
Electronic brake force distribution
see EBD (electronic brake force
distribution)
Electronic Stability Program
see ESP
®(Electronic Stability Program)
Electronic Traction System
see ETS (Electronic Traction System)
Emergency
Automatic measures after an acci-
dent ................................................. 55
Index9

Important safety guidelines .............42
Introduction .....................................4 1
Releasin g ......................................... 44
Warning lamp ................................. 198
Warning lamp (function) ................... 44
Seat function
see Seat
Seats
Adjusting (electrically) ..................... 86
Adjusting (manually) ........................ 85
Adjusting (Performance Seat) .......... 87
Adjusting lumbar support ................ 86
Adjusting the head restraint ............ 86
Calling up a stored setting (mem-
ory function) .................................... 95
Cleaning the cover ......................... 246
Important safety notes .................... 84
Seat heating problem ...................... 88
Seat ventilation problem .................. 88
Storing settings (memory func-
tion) ................................................. 94
Switching AIRSCARF on/off ............ 89
Switching seat heating on/off ......... 87
Switching seat ventilation on/off .... 88
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 246
Positions ........................................ 117
Sensors (cleaning instructions) ....... 245
Service Center
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 168
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 289
Coolant (engine) ............................ 290
Engine oil ....................................... 289
Fuel ................................................ 286
Important safety notes .................. 286
Refrigerant (air-conditioning sys-
tem) ............................................... 291
Washer fluid ................................... 290
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 208 Setting the language
see also Digital Operator's Man-
ual .................................................. 208
Setting the time
see also Digital Operator's Man-
ual .................................................. 208
Settings
Factory (on-board compu
ter) ......... 170
On-board computer ....................... 168
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 171
Side impact air bag ............................. 47
Side marker lamp (display mes-
sage) ................................................... 185
Side windows
Cleaning ......................................... 243
Convenience closing feature ............ 78
Convenience opening feature .......... 78
Important safety information ........... 76
Opening/closing .............................. 77
Problem (malfunction) ..................... 79
Resetting ......................................... 78
Reversing feature ............................. 77
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 208
SmartKey
Changing the battery ....................... 69
Changing the programming ............. 67
Checking the battery ....................... 69
Convenience closing feature ............ 78
Convenience opening feature .......... 78
Display message ............................ 196
Door central locking/unlocking ....... 66
Important safety notes .................... 66
KEYLESS-GO start function .............. 67
Loss ................................................. 70
Mechanical key ................................ 68
Opening/closing soft top ................. 81
Overview .......................................... 66
Positions (ignition lock) ................. 111
Problem (malfunction) ..................... 70
Starting the engine ........................ 112
SMS
see also Digital Operator's Man-
ual .................................................. 208
Snow chains ...................................... 263
Index17

Wheel chock...................................... 280
Wheels
Changing a wheel .......................... 279
Checking ........................................ 262
Cleaning ......................................... 243
Important safety notes .................. 261
Information on driving .................... 261
Interchanging/changing ................ 279
Mounting a new wheel ...................2 82
Mounting a wheel .......................... 280
Notes on sport tires ....................... 261
Removing a wheel .......................... 282
Storing ...........................................2 80
Tightening torque ........................... 283
Wheel size/tire size ....................... 283
Wind screen ......................................... 82
Window curtain air bag
Display message ............................ 182
Windows
see Side windows
Windshield
Defrosting ...................................... 106
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 239
Important safety notes .................. 290
Windshield wipers
Problem (malfunction) ................... 102
Replacing the wiper blades ............ 101
Switching on/off ........................... 100
Winter driving
Slippery road surfaces ................... 134
Snow chains .................................. 263
Winter operation
General notes ................................ 263
Summer tires ................................. 263
Winter tires
M+S tires ....................................... 263
Wiper blades
Cleaning ......................................... 244
Important safety notes .................. 101
Replacing ....................................... 101
Replacing (windshield) ................... 101
Workshop
see Qualified specialist workshop
22Index

Pets in the vehicle
GWARNING
If you leave animals unattended or unsecured
in the vehicle, they could press buttons or
switches, for example.
As a result, they could:
Ractivate vehicle equipment and become
trapped, for example
Ractivate or deactivate systems, thereby
endangering other road users
Unsecured animals could also be flung around
the vehicle in the event of an accident or sud-
den steering or braking, thereby injuring vehi-
cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
RABS (Anti-lock BrakingSystem)
(Ypage 58)
RBAS ( Brake Assist System) (Ypage 59)
RActive Brake Assist (Ypage 59)
RESP®(Electronic StabilityProgram)
(Ypage 62)
REBD ( Electronic Brake force Distribution)
(Ypage 64)
RADAPTIVE BRAKE (Ypage 64)
Important safety notes
If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Please pay special attention to the
notes on tires, recommended minimum tire
tread depths, etc. (
Ypage 261).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 58).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (
Ypage 200) and dis-
58Driving safety systems
Safety

GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
GWARNING
When SPORT handling mode is activated,
there is a greater risk of skidding and acci-
dents.
Only activate SPORT handling mode in the sit-
uations described in the following.
In the following situations, it may be better to
activate SPORT handling mode or deactivate
ESP
®:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Ron specially designated roads when the vehi-
cle's own oversteering and understeering
characteristics are desired
Driving in SPORT handling mode or without
ESP
®requires an extremely qualified and expe-
rienced driver.
Activate ESP
®as soon as the situations descri-
bed above no longer apply. ESP®will otherwise
not be able to stabilize the vehicle if the vehicle
starts to skid or a wheel starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated. You
could otherwise damage the drivetrain.
Deactivating/activating ESP®
XTo activate SPORT handling mode: briefly
press button :.
The M handling mode warning lamp in the
instrument cluster lights up. The SPORT
han‐dling modemessage appears on the multi-
function display.
XTo deactivate SPORT handling mode:
briefly press button :.
The M handling mode warning lamp in the
instrument cluster goes out. ESP
®is activa-
ted
XTo deactivate ESP®: press button :.
The å ESP®OFF warning lamp in the
instrument cluster lights up. The ÷OFF
message appears on the multifunction dis-
play.
XTo activate ESP®:when SPORT handling
mode is activated or ESP®is deactivated,
press button :.
The å ESP
®OFF warning lamp in the
instrument cluster goes out. The ÷ON
message appears on the multifunction dis-
play.
Characteristics of activated SPORT han-
dling mode
If SPORT handling mode is activated and one or
more wheels start to spin, the ÷ESP®warn-
ing lamp in the instrument cluster flashes. ESP®
only stabilizes the vehicle to a limited degree.
When SPORT handling mode is activated:
RESP®only improves driving stability to a limi-
ted degree
Rtraction control is still activated
Rengine torque is no longer limited and the
drive wheels are able to spin
The spinning of the wheels results in a cut for
better traction on loose surfaces.
RESP®still provides support when you brake
firmly
Characteristics when ESP®is deactivated
If ESP®is deactivated and one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster flashes. In such situations,
ESP
®will not stabilize the vehicle.
If you deactivate ESP®:
RESP®no longer improves driving stability
Rengine torque is no longer limited and the
drive wheels are able to spin
Driving safety systems63
Safety
Z

Exception: it is permissible to mount a differ-
ent type or make in the event of a flat tire.
ROnly mount tires of the correct size onto the
wheels.
RBreak in new tires at moderate speeds for the
first 60 miles (100 km). The new tires only
reach their full performance after this dis-
tance.
RDo not drive with tires which have too little
tread depth. This significantly reduces the
traction on wet roads (hydroplaning).
RReplace the tires after six years at the latest,
regardless of wear.
Winter operation
General notes
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section (
Ypage 279).
Driving with summer tires
At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your vehicle
to M+S tire s. Usingsu mmer tires at very cold
temperatures could cause cracks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
M+S tires
GWARNING
M+S tires with a tire tread depth of less than
ã in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than ãin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use winter
tires or all-season tires. Both types of tire are
identified by the M+S marking.
Only winter tires bearing the isnowflake
symbol in addition to the M+S marking provide the best possible grip in wintry road conditions.
Only these tires will allow driving safety systems
such as ABS and ESP
®to function optimally in
winter. These tires have been developed specif-
ically for driving in snow.
Use M+S tires of the same make and tread on all
wheels to maintain safe handling characteris-
tics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
When you have mounted the M+S tires:
XCheck the tire pressures (Ypage 264).
XRestart the tire pressure monitor
(Ypage 269).
Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specially approved for your vehicle by
Mercedes-Benz, or are of a corresponding
standard of quality. For more information,
please contact a qualified specialist workshop.
If you intend to mount snow chains, please bear
the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel/tire combinations (
Ypage 283).
ROnly use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to a road that is not snow-covered.
Winter operation263
Wheels and tires
Z

RLocal regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains.
Rdo not exceed the maximum permissible
speed of 31 mph (50 km/h).
You may wish to deactivate ESP
®(Ypage 63)
when pulling away with snow chains mounted.
You can thereby allow the wheels to spin in a
controlled manner, achieving an increased driv-
ing force (cutting action).
Tire pressure
Tire pressure specifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
The data on the Tire and Loading Information
placard and tire pressure table shown here are
examples. Tire pressure specifications are vehi-
cle-specific and may deviate from the data
shown here. The tire pressure specifications
that are valid for your vehicle can be found on
the Tire and Loading Information placard and
tire pressure table on the vehicle.
General notes
The recommended tire pressures for the tires
mounted at the factory can be found on the
labels described here.
Further information on tire pressures can be
obtained at a qualified specialist workshop.
Tire and Loading Information placard
:Recommended tire pressures
The Tire and Loading Information placard is on
the B-pillar on the driver's side (
Ypage 269).
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires. The recommended tire pressures are valid
for the maximum permissible load and up to the
maximum permissible vehicle speed.
Tire pressure table
The tire pressure table is on the inside of the fuel
filler flap. It shows the tire pressure for all tires
permitted at the factory for this vehicle; see
illustration (example).
If a tire size precedes a tire pressure, the tire
pressure information following is only valid for
that tire size.
264Tire pressure
Wheels and tires