key battery MERCEDES-BENZ AMG GT ROADSTER 2019 Owner's Manual

B
Back button ....................................... 210
BAS (Brake Assist System) ................. 59
Basic settings
see Settings
Battery (SmartKey)
Checking .......................................... 69
Important safety notes .................... 68
Replacing ......................................... 69
Battery (vehicle)
Charging ........................................ 255
Display message ............................ 188
Important safety notes .................. 254
Jump starting ................................. 256
Replacing ....................................... 256
Belt
see Seat belts
Belt warning ......................................... 44
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 168
Display message ............................ 190
Notes/function .............................. 155
Blower
see Climate control
Bluetooth ®
Searching for a mobile phone ........ 216
see also Digital Operator's Man-
ual .................................................. 209
Brake Assist System
see BAS (Brake Assist System)
Brake assistance
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 180
Notes ............................................. 291
Brake force distribution
see EBD (electronic brake force
distribution)
Brakes
ABS .................................................. 58
AMG high-performance and
ceramic brakes .............................. 133
BAS .................................................. 59
Brake fluid (notes) ......................... 291
Braking assistance appropriate to
the situation ..................................... 61 Display message ............................ 175
EBD .................................................. 64
Hill start assist ............................... 112
Important safety notes .................. 132
Maintenance .................................. 133
Parking brake ................................ 129
Riding tips ...................................... 132
Warning lamp ................................. 200
Braking assistance appropriate to
the situation
Function/note s................................ 61
Breakdown assistance
Where will I find...? ........................ 249
see Flat tire
see Towing away
Buttons on the steering wheel ......... 160 C
Cabriolet Soft top ............................................ 80
California
Important notice for retail cus-
tomers and lessees .......................... 25
Calling up a malfunction
see Display messages
Calling up the climate control bar
Multimedia system ........................ 213
Calling up the climate control
menu
Multimedia system ........................ 213
Car
see Vehicle
Care
Car wash ........................................ 242
Carpets .......................................... 248
Display ........................................... 247
Exhaust pipe .................................. 247
Exterior lights ................................ 246
Gear or selector lever .................... 247
General notes ................................ 241
Interior ........................................... 247
Matte finish ................................... 244
Paint .............................................. 243
Plastic trim .................................... 247
Power washe r................................ 243
Rear view camera .......................... 246
Roof lining ...................................... 248 6
Index

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

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

The spinning of the wheels results in a cut for
better traction on loose surfaces.
R traction control is still activated
R Adaptive Brake Assist is unavailable
Active Brake Assist is also not activated if you
brake firmly with assistance from ESP ®
.
R PRE-SAFE ®
is unavailable
PRE-SAFE ®
is also not activated if you brake
firmly with assistance from ESP ®
.
R ESP ®
still provides support when you brake
firmly EBD (electronic brake force distribu-
tion)
General information EBD monitors and controls the brake pressure
on the rear wheels to improve driving stability
while braking.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 58). G
WARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (Y page 201) as well as display
messages (Y page 177). ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. In addition to
the braking function, ADAPTIVE BRAKE also fea-
tures the hill start assist function (Y page 112). Protection against theft
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey. X To activate with KEYLESS-GO start-func-
tion or KEYLESS-GO:
switch the ignition off
and open the driver's door.
X To activate with the SmartKey: remove the
SmartKey from the ignition lock.
X To deactivate: switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Anyone
can start the engine if a valid SmartKey has been
left inside the vehicle.
i The immobilizer is always deactivated when
you start the engine.
In the event that the engine cannot be started (yet the vehicle's battery is charged), the sys-
tem is not operational. Contact an authorized Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada). ATA (anti-theft alarm system)
X
To arm: lock the vehicle with the SmartKey or
KEYLESS-GO.
Indicator lamp 0043flashes. The alarm system
is armed after approximately 15 seconds.
X To disarm: unlock the vehicle with the Smart-
Key or KEYLESS-GO.
or X With KEYLESS-GO start function or vehi-
cles with KEYLESS-GO:
press the Start/
Stop button.
The SmartKey must be in the vehicle. 64
Protection against theftSafety

after the vehicle is unlocked with the SmartKey.
Information on activating and deactivating the
locator lighting can be found in the Digital Oper-
ator's Manual.
X To open the trunk lid: press and hold the
0054 button until the trunk lid opens. KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart-
Key in the vehicle (Y page 112).
Locking/unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the 0037 button on the SmartKey.
The driver's door and the door at which the han- dle is used, must both be closed. The SmartKey
must be outside the vehicle. When locking or
unlocking with KEYLESS-GO, the distance
between the SmartKey and the corresponding
door handle must not be greater than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example:
R when starting the engine
R while driving
R when using the remote trunk lid opening sen-
sor
R when the external door handles are touched
R during convenience closing X
To unlock the vehicle: touch the inner sur-
face of the door handle.
X To lock the vehicle: touch sensor surface 0043
or 0044.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface 0044for an extended
period.
Further information on the convenience clos-
ing feature (Y page 78).
Deactivating and activating If you do not intend to use the vehicle for a lon-
ger period of time, you can deactivate KEYLESS-
GO. The SmartKey will then use very little power, thereby conserving battery power. For the pur-
poses of activation/deactivation, the vehicle
must not be nearby.
X To deactivate: press the0037button on the
SmartKey twice in rapid succession.
The indicator light on the SmartKey flashes
twice briefly then one long flash, then KEY-
LESS-GO is deactivated (Y page 69).
X To activate: press any button on the Smart-
Key.
or X Insert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features
are available again. KEYLESS-GO start function
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart- Key in the vehicle (Y page 112). SmartKey
67Opening and closing Z

Changing the settings of the locking
system
You can change the settings of the locking sys-
tem. This means that only the driver's door, the
glove box and the fuel filler flap are unlocked
when the vehicle is unlocked. This is useful if you
frequently travel on your own.
X To change the setting: press and hold down
the 0036 and0037 buttons simultaneously
for approximately six seconds until the indi-
cator lamp flashes twice (Y page 69).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the 0037 or0036 button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock: press the0036button once.
X To unlock centrally: press the0036button
twice.
X To lock: press the 0037button.
The KEYLESS-GO functions can be changed as
follows:
X To unlock the driver's door: touch the inner
surface of the door handle on the driver's
door.
X To unlock centrally: touch the inner surface
of the front-passenger door handle.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
Restoring factory settings:
X Press the 0036and0037 buttons simultane-
ously for approximately six seconds until the
indicator lamp flashes twice (Y page 69).Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys- tem will be triggered. Switch off the alarm
(Y page 64). If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked auto-
matically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 0043in the direction of the
arrow and at the same time remove mechan- ical key 0044from the SmartKey.
For further information about:
R unlocking the driver's door (Y page 73)
R locking the vehicle (Y page 73)
Inserting the mechanical key X
Push mechanical key 0044completely into the
SmartKey until it engages and release
catch 0043is back in its basic position. SmartKey battery
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. 68
SmartKeyOpening and closing

H
Environmental 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.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work- shop.
Checking the battery X
Press the 0037or0036 button.
The battery is working properly if battery
check lamp 0043lights up briefly.
The battery is discharged if battery check
lamp 0043does not light up briefly.
X Change the battery (Y page 69). If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the 0037 or0036 button:
R locks or
R unlocks the vehicle
i You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X Take the mechanical key out of the SmartKey
(Y page 68). X
Press mechanical key 0044into the SmartKey
opening in the direction of the arrow until bat- tery compartment cover 0043opens. Do not
hold battery compartment cover 0043closed
while doing so.
X Remove battery compartment cover 0043. X
Repeatedly tap the SmartKey against your
palm until battery 0087falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth to
do so.
X Make sure that the surface of the battery is
free of lint, grease and other contaminants. SmartKey
69Opening and closing Z

X
Insert the front tabs of battery compartment
cover 0043into the housing first and then press
to close it. X
Insert mechanical key 0044into the SmartKey
(Y page 68).
X Check the function of all SmartKey buttons on
the vehicle. Problems with the SmartKey
Problem
Possible causes/consequences and
0050
0050Solutions You can no longer lock or
unlock the vehicle using
the SmartKey. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 69) and replace it if necessary
(Y page 69).
If this does not work: X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key. There is interference from a powerful source of radio waves.
X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key. The SmartKey is faulty.
X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO was deactivated.
X Reactivate KEYLESS-GO (Y page 67). The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 69) and replace it if necessary
(Y page 69).
If this does not work: X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key. There is interference from a powerful source of radio waves.
X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key. 70
SmartKeyOpening and closing

Problem
Possible causes/consequences and
0050
0050Solutions KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of the
SmartKey.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X Unlock (Y page 73) or lock (Y page 73) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop. The engine cannot be
started using the Smart-
Key. the on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 255).
or
X Jump-start the vehicle (Y page 256).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 69) and replace it if necessary
(Y page 69).
If this does not work: X Start your vehicle with the SmartKey in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock. You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. SmartKey
71Opening and closing Z

Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
When a door is opened, the side window on that
side opens slightly. When the door is closed, the side window closes again.
! The side windows will not open/close if the
battery is discharged or if the side windows
have iced up. It will then not be possible to
close the door. Do not attempt to force the
door closed. You could otherwise damage the door or the side window. Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. If the vehicle has been
locked with the SmartKey or with KEYLESS-GO,
opening a door from the inside will trigger the
anti-theft alarm system. Switch off the alarm
(Y page 64). X
Pull door handle 0044.
If the door is locked, locking knob 0043pops up.
The door is unlocked and opens. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock and unlock the vehicle
from the inside. The buttons are on the driver’s
door. X
To unlock: press button 0043.
X To lock: press button 0044.
If the front-passenger door is closed, the vehi-
cle locks.
Meanwhile, the fuel filler flap will not be locked
or unlocked.
You cannot unlock the vehicle centrally from the
inside if the vehicle has been locked with the
SmartKey or KEYLESS-GO.
The doors can be opened from the inside.
If the vehicle has been locked with the SmartKey
or with KEYLESS-GO, opening a door from the
inside will trigger the anti-theft alarm system.
Switch off the alarm (Y page 64).72
DoorsOpening and closing