2019 MERCEDES-BENZ AMG GT ROADSTER snow chains

Alarm system
see ATA (Anti-Theft Alarm system)
AMG
Adaptive sport suspension sys-
tem ................................................ 147
E-SELECT lever .............................. 117
Menu (on-board computer) ............ 170
Performance Seat ............................ 87
SPEEDSHIFT DCT 7-gear sport
transmission .................................. 117
AMG ceramic brakes .........................133
AMG high-performance and
ceramic brakes .................................. 133
AMG sports exhaust system ............ 114
Animals
see Pets in the vehicle
Anti-entrapment function
see Reversing feature
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-skid chains
see Snow chains
Anti-theft alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 221
Assistance display (on-board com-
puter) ................................................. .167
Assistance menu (on-board com-
puter) ................................................. .168
Assistance system
see Driving systems
ASSYST PLUS
Displaying a service message ....... .241
Hiding a service message .............. 241
Resetting the service interval dis-
play ................................................ 241
Service message ............................ 240
Special service requirements ......... 241
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 64
Function .......................................... .64
Switching off the alarm .................... 64
ATTENTION ASSIST
Activating/deactivating ................. 168
Display message ............................ 189
Function/note s............................. 154 Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 186
see Lights
Automatic car wash (care) ............... 242
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 ............................ 194
Double-clutch function .................. 120
Drive 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 mod e................................. 120
Important safety notes .................. 117
Kickdown ....................................... 120
Manual drive progra m.................... 122
Manual mod e................................. 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 Index
5

SETUP (on-board computer,
Mercedes-AMG vehicles) ............... 171
Driver's door
see Doors
Driver's seat
see Seat
Driving
Important safety notes .................. 109
Driving abroad
Mercedes-Benz Service ................. 241
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 BRAK E............................. 64
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
Active Distance Assist
DISTRONIC .................................... 136
Parking assist PARKTRONIC .......... 148
Driving systems
AMG adaptive sport suspension
system ........................................... 147
ATTENTION ASSIST ........................ 154
Blind Spot Assist ............................ 155
Cruise control ................................ 134
Display message ............................ 189
HOLD function ............................... 144
Lane Keeping Assist ...................... 157
Lane Tracking package .................. 155
RACE START .................................. 146
Rear view camera .......................... 151
Driving tips
Active Distance Assist
DISTRONIC .................................... 143
AMG high-performance and
ceramic brakes .............................. 133
Automatic transmissio n................. 120 Brakes ........................................... 132
Break-in perio d.............................. 109
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 road surfaces ........................... 134
Important safety notes .................. 109
Limited braking efficiency on sal-
ted roads ....................................... 132
Snow chains .................................. 265
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 .................................................. 209
DYNAMIC SELECT controller ............ 116 E
E-SELECT lever ................................... 117
EASY-ENTRY feature
Function/note s................................ 90
EASY-EXIT feature
Function/note s................................ 90
EBD (electronic brake force distri-
bution)
Display message ............................ 177
Function/note s................................ 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) Index
9

Important safety guidelines .............42
Introduction .....................................41
Releasin g......................................... 44
Warning lamp ................................. 199
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 ......................... 248
Important safety notes .................... 84
Seat heating problem ...................... 89
Seat ventilation problem .................. 89
Storing settings (memory func-
tion) ................................................. 94
Switching AIRSCARF on/of f............ 89
Switching seat heating on/of f......... 87
Switching seat ventilation on/of f.... 88
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 247
Positions ........................................ 117
Sensors (cleaning instructions) ....... 246
Service menu (on-board com-
puter) .................................................. 168
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 291
Coolant (engine) ............................ 292
Engine oil ....................................... 291
Fuel ................................................ 289
Important safety notes .................. 289
Refrigerant (air-conditioning sys-
tem) ............................................... 293
Washer fluid ................................... 292
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 209 Setting the language
see also Digital Operator's Man-
ual .................................................. 209
Setting the time
see also Digital Operator's Man-
ual .................................................. 209
Settings
Factory (on-board computer) ......... 170
On-board computer ....................... 168
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 171
Side impact air bag ............................. 47
Side marker lamp (display mes-
sage) ................................................... 186
Side windows
Cleaning ......................................... 245
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 .................................................. 209
SmartKey
Changing the battery ....................... 69
Changing the programming ............. 68
Checking the battery ....................... 69
Convenience closing feature ............ 78
Convenience opening feature .......... 78
Display message ............................ 197
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 .................................................. 209
Snow chains ...................................... 265 Index
17

Wheel chock
...................................... 282
Wheels
Changing a wheel .......................... 281
Checking ........................................ 264
Cleaning ......................................... 245
Important safety notes .................. 263
Information on driving .................... 263
Interchanging/changing ................ 281
Mounting a new wheel .................. .284
Mounting a wheel .......................... 282
Notes on sport tires ....................... 263
Removing a wheel .......................... 284
Storing .......................................... .282
Tightening torque ........................... 285
Wheel size/tire size ....................... 285
Wind screen ......................................... 82
Window curtain air bag
Display message ............................ 183
Windows
see Side windows
Windshield
Defrosting ...................................... 106
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 240
Important safety notes .................. 292
Windshield wipers
Problem (malfunction) ................... 102
Replacing the wiper blades ............ 101
Switching on/off ........................... 100
Winter driving
Slippery road surfaces ................... 134
Snow chains .................................. 265
Winter operation
General notes ................................ 265
Summer tires ................................. 265
Winter tires
M+S tires ....................................... 265
Wiper blades
Cleaning ......................................... 246
Important safety notes .................. 101
Replacing ....................................... 101
Replacing (windshield )................... 101
Workshop
see Qualified specialist workshop 22
Index

Pets in the vehicle
G
WARNING
If you leave animals unsupervised or unse-
cured in the vehicle, they may press buttons
or switches, for instance.
In this way, animals may:
R activate vehicle equipment and become
trapped, for example
R switch systems on or off and thereby
endanger other road users
Furthermore, unsecured animals may be flung
around inside the vehicle in the event of an
accident or abrupt steering or braking maneu- ver, and thereby injure vehicle occupants.
There is a risk of accident and injury.
Never leave animals unattended in the vehi-
cle.
Always secure animals properly when driving,
for instance with a suitable pet carrier. Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems: R ABS ( Anti-lock BrakingSystem)
(Y page 58)
R BAS ( Brake Assist System) (Y page 59)
R Active Brake Assist (Y page 59)
R ESP ®
(Electronic StabilityProgram)
(Y page 62)
R EBD ( Electronic Brake force Distribution)
(Y page 64)
R ADAPTIVE BRAKE (Y page 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. (Y page 263).
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 0025 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 i
Observe the "Important safety notes" sec-
tion (Y page 58). G
WARNING
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 (Y page 201) and dis-58
Driving safety systemsSafety

G
WARNING
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. G
WARNING
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 ®
:
R when using snow chains
R in deep snow
R on sand or gravel
R on 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 ® X
To activate SPORT handling mode: briefly
press button 0043.
The 0074 handling mode warning lamp in the
instrument cluster lights up. The SPORT SPORThan‐
han‐
dling mode
dling mode message appears on the multi-
function display.
X To deactivate SPORT handling mode:
briefly press button
0043.
The 0074 handling mode warning lamp in the
instrument cluster goes out. ESP ®
is activa-
ted
X To deactivate ESP ®
:press button 0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster lights up. The 00E5OFF OFF
message appears on the multifunction dis-
play.
X To activate ESP ®
:when SPORT handling
mode is activated or ESP ®
is deactivated,
press button 0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster goes out. The 00E5ON 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 00E5ESP®
warn-
ing lamp in the instrument cluster flashes. ESP ®
only stabilizes the vehicle to a limited degree.
When SPORT handling mode is activated:
R ESP ®
only improves driving stability to a limi-
ted degree
R traction control is still activated
R engine 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.
R ESP ®
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 00E5ESP®
warning lamp in the
instrument cluster flashes. In such situations,
ESP ®
will not stabilize the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability
R engine torque is no longer limited and the
drive wheels are able to spin Driving safety systems
63Safety Z

Driving on wet roads
Hydroplaning If water has accumulated to a certain depth on
the road surface, there is a danger of hydro-
planing occurring, even if:
R you drive at low speeds
R the tires have adequate tread depth
For this reason, in the event of heavy rain or in
conditions in which hydroplaning may occur,
you must drive in the following manner:
R lower your speed
R avoid ruts
R avoid sudden steering movements
R brake carefully
Driving on flooded roads !
Do not drive through flooded areas. Check
the depth of any water before driving through
it. Drive slowly through standing water. Oth-
erwise, water could enter the vehicle interior
or engine compartment. It can then damage
the engine's or automatic transmission's
electronic components. It can also be sucked
in by the engine's air intake connection and
cause engine damage. Winter driving
G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury. If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur- faces. Avoid sudden acceleration, steering and
braking maneuvers. Do not use cruise control.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position 005C.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in wooded areas or on bridges. The vehicle could
skid if you fail to adapt your driving style. Always
adapt your driving style and drive at a speed to
suit the prevailing weather conditions.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Further information on driving with snow chains (Y page 265).
Further information on driving with summer
tires (Y page 265).
Observe the notes in the "Winter operation" sec-
tion (Y page 265). Driving systems
Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. Change into a lower
gear in good time on long and steep downhill
gradients. This is especially important if the
vehicle is laden. By doing so, you will make use of the braking effect of the engine. This relieves
the load on the brake system and prevents the 134
Driving syste
msDriving and parking

Exception: it is permissible to mount a differ-
ent type or make in the event of a flat tire.
R Only mount tires of the correct size onto the
wheels.
R Break 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.
R Do not drive with tires which have too little
tread depth. This significantly reduces the
traction on wet roads (hydroplaning).
R Replace 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 (Y page 281). 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. Using summer 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
G
WARNING
M+S tires with a tire tread depth of less than
00CF 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 00CFin
(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 004Dsnowflake
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:
X Check the tire pressures (Y page 266).
X Restart the tire pressure monitor
(Y page 271). Snow chains
G
WARNING
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:
R never install snow chains to the front
wheels
R always 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:
R Snow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel/tire combinations (Y page 285).
R Only 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 operation
265Wheels and tires Z