tire pressure MERCEDES-BENZ AMG GT ROADSTER 2019 Owner's Manual

Maintenance and care
......................235
Engine compartment ........................... 235
ASSYST PLUS ...................................... 240
Care ..................................................... 241 Breakdown assistance
.....................249
Where will I find...? .............................. 249
Flat tire ................................................ 250
Battery (vehicle) .................................. 254
Jump-starting ....................................... 256
Towing and tow-starting ...................... 258
Fuses .................................................. .261 Wheels and tires
............................... 263
Important safety notes ........................ 263
Operation ............................................ 263
Winter operation .................................. 265
Tire pressure ....................................... 266
Loading the vehicle .............................. 271
All about wheels and tires ................... 274
Changing a wheel ................................ 281
Wheel and tire combinations .............. .285 Technical data
................................... 287
Information regarding technical data ... 287
Vehicle electronics .............................. 287
Identification plates ............................ .287
Service products and filling capaci-
ties ...................................................... 289
Vehicle data ......................................... 293 Contents
3

Information .................................... 287
Tires/wheels .................................2
85
Vehicle data ................................... 293
Telephone
Accepting a call (multifunction
steering wheel) .............................. 167
Authorizing a mobile phone (con-
necting) ......................................... 216
Connecting a mobile phone
(device manager) ........................... 215
Display message ............................ 197
Introduction ................................... 166
Menu (on-board computer) ............ 166
Number from the phone book ....... .167
Redialing ........................................ 167
Rejecting/ending a call ................. 167
see also Digital Operator's Man-
ual ................................................. .209
Temperature
Coolant (display in the instrumentcluster) .......................................... 159
Engine oil (on-board computer) ...... 170
Outside temperature ..................... .159
Setting (climate control) ................ 105
Transmission oil (on-board com-
puter) ............................................. 170
Timing (RACETIMER) ......................... 172
Tire pressure
Calling up (on-board computer) ..... 269
Checking manually ........................ 268
Display message ............................ 192
Maximum ....................................... 268
Not reached (TIREFIT) .................... 253
Notes ............................................. 267
Reached (TIREFIT) .......................... 253
Recommended ............................... 266
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 270
Function/notes ............................ .269
General notes ................................ 269
Important safety notes .................. 269
Restarting ...................................... 271
Warning lamp ................................. 207
Warning message .......................... 270
Tire-change tool kit ........................... 250
TIREFIT kit
Important safety notes .................. 251 Storage location ............................ 250
Tire pressure not reached .............. 253
Tire pressure reached .................... 253
Using ............................................. 251
Tires
Aspect ratio (definition) ................. 280
Average weight of the vehicle
occupants (definition) .................... 279
Bar (definition) ............................... 279
Changing a wheel .......................... 281
Characteristics .............................. 279
Checking ........................................ 264
Curb weight (definition) ................. 280
Definition of terms ......................... 279
Direction of rotation ..................... .281
Display message ............................ 192
Distribution of the vehicle occu-
pants (definition) ............................ 281
DOT (Department of Transporta-
tion) (definition) ............................ .279
DOT, Tire Identification Number
(TIN) ............................................... 278
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 279
GVW (Gross Vehicle Weight) (def-
inition) .......................................... .280
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 280
Important safety notes .................. 263
Increased vehicle weight due to
optional equipment (definition) ...... 279
Information on driving .................... 263
Kilopascal (kPa) (definition) ........... 280
Labeling (overview )........................ 276
Load bearing index (definition) ...... 281
Load index ..................................... 278
Load index (definition) ................... 280
Maximum load on a tire (defini-
tion) ............................................... 280
Maximum loaded vehicle weight
(definition) ..................................... 280
Maximum permissible tire pres-
sure (definition) ............................. 280
Maximum tire load ......................... 278
Maximum tire load (definition) ....... 280
Notes on sport tire s....................... 263
Optional equipment weight (defi-
nition) ............................................ 281 Index
19

PSI (pounds per square inch) (def-
inition) ...........................................2 80
Replacing ....................................... 281
Service life ..................................... 264
Sidewall (definition) ....................... 280
Speed rating (definition) ................ 280
Storing .......................................... .282
Structure and characteristics
(definition) ..................................... 279
Summer tires in winter .................. 265
Temperature .................................. 275
TIN (Tire Identification Number)
(definition) ..................................... 281
Tire bead (definition) ..................... .280
Tire pressure (definition) ................ 280
Tire pressures (recommended) ...... 279
Tire size (data) ............................... 285
Tire size designation, load-bearing capacity, speed rating .................... 276
Tire tread ....................................... 264
Tire tread (definition) ..................... 280
Total load limit (definition) ............. 281
Traction ......................................... 275
Traction (definition) ....................... 281
Tread wea r..................................... 275
Uniform Tire Quality Grading
Standards ...................................... 274
Uniform Tire Quality Grading
Standards (definition) .................... 279
Wear indicator (definition) ............. 281
Wheel and tire combination ........... 285
Wheel rim (definition) .................... 279
see Flat tire
Tool
see Vehicle tool kit
Touchpad
Changing the station/music
track .............................................. 212
Character suggestions ................... 211
Deleting characters ....................... 211
Entering a space ............................ 211
Entering characters ....................... 211
Gesture control .............................. 211
Handwriting recognition ................ 211
Operating the touchpad ................. 211
Overview ........................................ 211
Quick access for Audio .................. 212
Switching ....................................... 211 Switching input line ....................... 211
Tow-starting
Emergency engine starting ............ 261
Towing
Permitted towing methods ............ 259
Towing away
Important safety guidelines ........... 258
Installing the towing eye ................ 259
Removing the towing eye ............... 260
Transporting the vehicle ................ 260
With both axles on the ground ....... 260
Towing eye ......................................... 249
Traction system
see ETS (Electronic Traction System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 209
Transmission
Driving tips .................................... 120
Selector lever ................................ 117
see Automatic transmission
Transmission position display ......... 119
Transmission positions
General notes ................................ 117
Overview ........................................ 118
Transporting the vehicle .................. 260
Trim pieces (cleaning instruc-
tions) .................................................. 247
Trip computer (on-board com-
puter) .................................................. 162
Trip odometer
Calling up ....................................... 161
Resetting (on-board computer) ...... 162
Trunk lid
Display message ............................ 196
Important safety notes .................... 74
Locking separately ........................... 76
Opening (automatically from
inside) .............................................. 75
Opening dimensions ...................... 293
Opening/closing (from the out-
side) ................................................. 74
Unlocking with KEYLESS-GO ............ 74
Trunk load (maximum) ...................... 293
Turn signals
Display message ............................ 186
Switching on/of f.............................. 97 20
Index

Two-way radio
Frequencies ................................... 287
Installation ..................................... 287
Transmission output (maximum) .... 287
Type identification plate
see Vehicle identification plate U
Unlocking Emergency unlocking ....................... 73
From inside the vehicle (central
unlocking button) ............................. 72
USB devices
Connecting to the Media Inter-
face .............................................. .217 V
Vanity mirror (in the sun visor) ........221
Vehicle
Correct use ...................................... 28
Data acquisition ............................... 29
Display message ............................ 194
Electronics ..................................... 287
Equipment ....................................... 25
Individual settings .......................... 168
Limited Warranty ............................ .29
Loading .......................................... 271
Locking (in an emergency) ............... 73
Locking (SmartKey) .......................... 66
Lowering ........................................ 285
Maintenance .................................... 26
Operating safety .............................. 26
Parking .......................................... 127
Parking for a long period ................ 130
Pulling away ................................... 112
Raising ........................................... 282
Reporting problems ......................... 28
Securing from rolling away ............ 282
Towing away .................................. 258
Transporting .................................. 260
Unlocking (in an emergency) ........... 73
Unlocking (SmartKey )...................... 66
Vehicle data ................................... 293
Vehicle battery
see Battery (vehicle)
Vehicle data
Trunk load (maximum) ................... 293 Vehicle dimensions
........................... 293
Vehicle emergency locking ................ 73
Vehicle identification number
see VIN
Vehicle identification plate .............. 287
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit .................................. 249
Ventilation
see Climate control
Video
Operating the DVD ......................... 166
see also Digital Operator's Man-
ual .................................................. 209
VIN
Seat ............................................... 288
Type plate ...................................... 287 W
Warning and indicator lamps ABS ................................................ 201
Active Brake Assist ........................ 206
Brakes ........................................... 200
Check Engine ................................. 204
Coolant .......................................... 204
Distance warning ........................... 206
ESP ®
.............................................. 201
ESP ®
OFF ....................................... 202
Fuel tank ........................................ 204
Overview .......................................... 34
Parking brake ................................ 203
PASSENGER AIR BAG ...................... 41
Reserve fue l................................... 204
Restraint system ............................ 203
Seat belt ........................................ 199
SPORT handling mod e................... 203
Steering ......................................... 208
Tire pressure monitor .................... 207
Warranty .............................................. 25
Washer fluid
Display message ............................ 197
Weather display (COMAND)
see also Digital Operator's Man-
ual.................................................. 209
Wheel and tire combinations
Tires ............................................... 285
Wheel bolt tightening torque ........... 285 Index
21

Protecting the environment
General notes
H
Environmental note
The pollutant emission of your vehicle is
directly related to the vehicle's operation.
You can make a contribution to environmental protection by operating your vehicle in an
environmentally responsible manner. To do
this, observe the following recommendations
on operating conditions and your personal
driving style.
Operating conditions:
R Make sure that the tire pressure is correct.
R Do not carry any unnecessary weight with
you (e.g. a roof rack which is no longer
required).
R Observe the service intervals. A regularly
serviced vehicle will contribute to environ-
mental protection.
R Always have maintenance work carried out
at a qualified specialist workshop.
Personal driving style:
R Do not depress the accelerator pedal when
starting the engine.
R Do not warm up the engine while station-
ary.
R Drive carefully and maintain a sufficient dis-
tance to other vehicles.
R Avoid frequent, sudden acceleration and
braking.
R Shift gears in good time and use each gear
only up to 00C3of its maximum engine speed.
R Switch off the engine in stationary traffic,
e.g. use the ECO start/stop function.
R Drive in a fuel-saving manner. Pay attention
to the ECO display for a fuel-efficient driving
style. Environmental concerns and recom-
mendations
Wherever the Operator's Manual requires you to
dispose of materials, first try to recycle or re-use them. Observe the relevant environmental rules
and regulations when disposing of materials. In
this way you will help to protect the environ-
ment. Genuine Mercedes-Benz parts
H
Environmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
! Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
R doors
R door pillars
R door sills
R seats
R cockpit
R instrument cluster
R center console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out repairs or welding. You could impair the operating
efficiency of the restraint systems.
Have aftermarket accessories installed at a
qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels as well as accessories relevant to safety which
have not been approved by Mercedes-Benz. This could lead to malfunctions in safety-relevant
systems, e.g. the brake system. Use only genu-
ine Mercedes-Benz parts or parts of equal qual-
ity. Only use tires, wheels and accessories that
have been specifically approved for your vehi-
cle.
Genuine Mercedes-Benz parts are subject to
strict quality control. Every part has been spe-
cifically developed, manufactured or selected
for and adapted to Mercedes-Benz vehicles.
Therefore, only genuine Mercedes-Benz parts
should be used. 24
Genuine Mercedes-Benz partsIntroduction

If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems
between you, your dealer, or Mercedes-Benz
USA, LLC.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at 1-888-327-4236
(TTY: 1-800-424-9153); go to http://
www.safercar.gov; or write to: Administrator,
NHTSA, 400 Seventh Street, SW., Washington,
DC 20590.
You can also obtain other information about
motor vehicle safety at:
http://www.safercar.gov Limited Warranty
! Observe the notes in this Operator's Manual
regarding the correct operation of your vehi-
cle and possible damage to the vehicle. Dam-
age to the vehicle which is caused by violation
of these notes is not covered by the
Mercedes-Benz implied warranty or the new
or used-vehicle warranty. QR code for rescue card
The QR codes are secured in the fuel filler flap
and on the opposite side on the B-pillar. In the
event of an accident, rescue services can use
the QR code to quickly find the appropriate res-
cue card for your vehicle. The current rescue
card contains the most important information
about your vehicle in a compact form, e.g. the
routing of the electric cables.
You can find more information at
www.mercedes-benz.de/qr-code. Data stored in the vehicle
Electronic control units
There are electronic control units installed in
your vehicle. Some of these are necessary for
your vehicle to operate safely, while some offer
support during driving (driver assistance sys-
tems). In addition, your vehicle offers comfort
and entertainment functions that are also made possible by electronic control units. Electronic control units contain data storage
systems that can temporarily or permanently
save technical information concerning the vehi-
cle's condition, component stress and mainte-
nance requirements as well as technical events
and malfunctions.
This information generally documents the con-
dition of a component, a module, a system or the
surroundings, such as:
R Operating states of system components (e.g.
fill levels, battery status, tire pressure)
R Status messages concerning the vehicle or its
individual components (e.g. wheel rpm/
speed, deceleration, lateral acceleration, indi-
cation of whether seat belts are fastened)
R Malfunctions and defects in important system
components (e.g. lights, brakes)
R Information about events leading to vehicle
damage
R System responses in special driving situa-
tions (e.g. air bag deployment, intervention of
stability control systems)
R Ambient conditions (e.g. temperature, rain
sensor)
In addition to performing the actual control unit function, this data is used by manufacturers to
detect and rectify malfunctions and to optimize
vehicle functions. Most of this data is volatile
and processed only in the vehicle itself. Only a
small part of the data is stored in event or mal-
function memories.
When you use services, the technical data from
the vehicle can be read out by service network
employees (e.g. workshops, manufacturers) or
third parties (e.g. breakdown services). Services can include repair services, maintenance pro-
cesses, warranty cases and quality assurance
measures. The data are read out via the con-
nection for the diagnostics connection in the
vehicle, which is required by law. The relevant
offices in the service network or third parties
collect, process and use the data. This data
documents the vehicle's technical states, is
used to help in finding malfunctions and improv-
ing quality and is sent to the manufacturer
where necessary. In addition, the manufacturer is subject to product liability. The manufacturer
needs technical data from vehicles for this pur-
pose.
Malfunction memories in the vehicle can be
reset by a service center during repair or service work. Data stored in the vehicle
29Introduction Z

Instrument cluster
Function Page
0043
Speedometer
Speedometer segments 159
Warning and indicator lamps:
0077
Tire pressure monitor 207
00BB
ESP®
OFF 201
00E5
ESP® 201
00BA
Distance warning 206
00CC
Power steering 208
0075
Restraint system 41
00E9
Seat belts 199
0057
High-beam headlamps 97
0058
Low-beam headlamps 97
0060
Parking lamps 97
005A
This indicator lamp has
no function 005E
Rear fog lamp 97
0044
003E003D
Turn signals 97
0087
Multifunction display 161
0085
Tachometer 159 Function Page
Warning and indicator lamps:
0024
Electric parking brake
(yellow) 203
0025
ABS 201
00B9
Check Engine 204
Electric parking brake (red) 203
0049
USA only 0024
Canada only Brakes (red) 200
0027
USA only 004D
Canada only 0074
SPORT handling mode 203
0083
Coolant temperature gauge 159
Warning and indicator lamps:
00AC
Coolant 204
0084
Fuel level indicator
Warning and indicator lamps:
00B6
Reserve fuel level with
fuel filler flap location indica-
tor (right) 204
i
Information on the display of the outside
temperature in the multifunction display can
be found under "Outside temperature dis-
play" (Y page 159). Adjusting the instrument cluster lighting
using the on-board computer (Y page 169).34
Instrument clusterAt a glance

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

If you overfill the fuel tank, fuel could spray out
when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
(Y page 289). Refueling
General information Pay attention to the important safety notes
(Y page 125).
If you unlock/lock the vehicle from the outside,
the fuel filler flap also unlocks/locks.
The position of the fuel filler cap is displayed
00B6 in the instrument cluster. The arrow next
to the filling pump indicates the side of the vehi-
cle.
Opening the fuel filler flap 0043
To open the fuel filler flap
0044 To insert the fuel filler cap
0087 Tire pressure table
0085 Instruction label for fuel type to be refueled X
Switch off the engine.
X Open the driver's door.
The vehicle electronics are now in key posi-
tion 0092. This is the same as the SmartKey
having been removed.
or, if the SmartKey is inserted in the ignition
lock: X Remove the SmartKey from the ignition lock.
X Press the fuel filler flap in the direction of
arrow 0043.
The fuel filler flap swings up.
X Turn the fuel filler cap counterclockwise and
remove it.
X Insert the fuel filler cap into the holder on the
inside of fuel filler flap 0044.
X Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
X Only fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may leak out.
Closing the fuel filler flap X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X Close the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle.
If you are driving with the fuel filler cap open, the 00B6 reserve fuel warning lamp flashes. A mes-
sage appears in the multifunction display
(Y page 189). 126
RefuelingDriving and parking

X
Connect the cable provided in the trunk to the
trickle charger.
X Connect the trickle charger to 12 V socket 0043.
Consult the manufacturer's operating instruc- tions on how to do so.
The trunk lid can be closed, even if a trickle
charger is connected. Make sure that the con-
nector for both the connector cables is outside
of the vehicle.
The connector can then separate if the vehicle is moved, even if you forget to disconnect the con-
nector cables. This prevents damaging the
cables and the trickle charger.
A trickle charger connected to 12 V socket 0043
only maintains the current charge level of the
vehicle's electrical system battery. If the vehi-
cle's electrical system battery is discharged, it
needs to be charged with a battery charger. Driving tips
General driving tips
Important safety notes G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If you operate mobile communication equip-
ment when driving, you may be distracted
from the traffic situation. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate this equipment when the vehicle is stationary.
Observe the legal requirements for the country
in which you are driving. Some jurisdictions pro-
hibit the driver from using a mobile phone while driving a vehicle. If you make a call while driving, always use
hands-free mode. Only operate the telephone
when the traffic situation permits. If you are
unsure, pull over to a safe location and stop
before operating the telephone.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), the vehicle covers a
distance of 44 ft (approximately 14
m)per sec-
ond.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tires should always be inflated to the rec-
ommended tire pressure.
X Remove unnecessary loads.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all service and maintenance work car-
ried out at the specified intervals.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic and in hilly ter- rain.
Drinking and driving G
WARNING
Drinking and driving and/or taking drugs and driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases is hazardous to health
and can result in poisoning. There is a risk of
fatal injury. Therefore, never leave the engine Driving tips
131Driving and parking
Z