lane assist MERCEDES-BENZ AMG GT ROADSTER 2018 Owner's Manual

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

Horn...................................................... 33
Hydroplaning ..................................... 134
I
Ignition key
see SmartKey
Ignition lock
see Key positions
Immobilizer .......................................... 64
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals
Inspection
see ASSYST PLUS
Instrument cluster
Overview .......................................... 34
Warning and indicator lamps ...........3 4
Instrument cluster lighting .............. 169
Interior lighting
Automatic control .......................... 100
Overview .......................................... 99
Reading lamp .................................. .99
Setting the brightness of the dis-
play/switch (on-board computer) .. 169
iPod
®
see also Digital Operator's Man-
ual .................................................. 208
J
Jack Using ............................................. 280
Jump starting (engine) ...................... 254
K
Key positions
SmartKey ....................................... 111
Start/Stop button .......................... 110
KEYLESS-GO
Convenience closing feature ............ 78
Deactivation ..................................... 67
Locking ............................................ 67
Start function ................................... 67
Unlocking ......................................... 67
KEYLESS-GO start function
Start/Stop button .......................... 110 Kickdown
Driving tips .................................... 120
Knee bag .............................................. 46
L
Lamps
see Warning and indicator lamps
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 169
Display message ............................ 189
Function/information .................... 157
Lane Tracking package ..................... 155
Lap time (RACETIMER) ...................... 172
License plate lamp (display mes-
sage) ................................................... 185
Light sensor (display message) ....... 185
Lights
Automatic headlamp mode .............. 96
Fogged up headlamps ...................... 99
Hazard warning lamps ..................... 98
High beam flasher ............................ 97
High-beam headlamps ..................... 97
Light switch ..................................... 96
Low-beam headlamps ...................... 97
Parking lamps .................................. 97
Rear fog lamp .................................. 97
Setting exterior lighting ................... 96
Setting the brightness of the dis-
play/switch (on-board computer) .. 169
Standing lamps ................................ 97
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 169
Turn signals ..................................... 97
see Interior lighting
Loading guidelines ............................ 217
Locking (doors)
Automatic ........................................ 72
Emergency locking ........................... 73
From inside (central locking but-
ton) .................................................. 72
see KEYLESS-GO
Locking centrally
see Central locking
12Index

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

Displaysin th einstrument cluste r
Displaysin th espeedometer
If Distanc ePilo tDISTRONIC detects avehicle in
front, segments between speed of th evehicle in
fron t: and stored speed ;ligh tup.
iFo rdesign reasons, th espeed displaye din
th espeedometer may diffe rslightly from th e
speed set fo rDistanc ePilo tDISTRONIC.
Display when Distance Pilo tDISTRONI Cis
deactivate d
On theon-boar dcomputer, you can selec tth e
assistanc egraphics display.
:Vehicle in front, if detecte d
;Distanceindicator ,curren tdistanc eto th e
vehicle in fron t
=Specified minimum distanc eto th evehicle
in front; adjustable
?Your vehicle
XSelec tth eAssistanc eGraphi cfunction
usin gth eon-boar dcompute r (Ypage 167).
Display when Distance Pilo tDISTRONI Cis
activate d
:DistancePilo tDISTRONIC active (tex tonly
appears when th ecruise contro llever is
actuated)
;Vehicle in front, if detecte d
=Specified minimum distanc eto th evehicle
in front; adjustable
?Your vehicle
XSelec tth eAssistanc eGraphi cfunction
usin gth eon-boar dcompute r (Ypage 167).
You will see th estored speed fo rapproximately
fiv eseconds when you activat eDistanc ePilo t
DISTRONIC.
Tips for drivin gwit hDistance Pilo t
DISTRONI C
General notes
Pay particular attention in th efollowin gtraffic
situations:
RCornering, going into and comin gout of a
ben d
RVehicles travelin gon adifferen tlin e
ROther vehicles changin glanes
RNarro wvehicles
RObstruction sand stationary vehicles
RCrossing vehicles
In suc hsituations, brake if necessary. Distanc e
Pilo tDISTRONIC will then be deactivated.
142Driving systems
Driving an d parking

Distance Pilot DISTRONIC may mistakenly
detect vehicles that are crossing your lane. Acti-
vating Distance Pilot DISTRONIC at, for exam-
ple, a traffic light with crossing traffic, could
cause your vehicle to pull away at the wrong
time.
HOLD
General notes
The HOLD function can assist the driver in the
following situations:
Rwhen pulling away, especially on steep slopes
Rwhen maneuvering on steep slopes
Rwhen waiting in traffic
The vehicle is kept stationary without the driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehicle:
Rif there is a malfunction in the system or in the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
Rif the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with or the battery is disconnected
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away before
you leave it.
!When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations. To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
Deactivate the HOLD function (
Ypage 145).
Activation conditions
You can activate the HOLD function if all of the
following conditions are fulfilled:
Rthe vehicle is stationary.
Rthe engine is running or if it has been auto-
matically switched off by the ECO start/stop
function.
Rthe driver's door is closed or your seat belt is
fastened.
Rthe electric parking brake is released.
Rthe transmission is in position h,kori.
Activating the HOLD function
XMake sure that the activation conditions are
met.
XDepress the brake pedal.
XQuickly depress the brake pedal further until
HOLD: appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
iIf depressing the brake pedal the first time
does not activate the HOLD function, wait
briefly and then try again.
144Driving system s
Driving an d parking

Rif the camera lens is dirty or obstructed.
Observe the notes on cleaning
(
Ypage 245)
Rif the rear of your vehicle is damaged. In this
case, have the camera position and setting
checked at a qualified specialist workshop
The field of vision and other functions of the
reversing camera may be restricted due to addi-
tional accessories on the rear of the vehicle (e.g. license plate holder).
The guide lines in the multimedia system display
show the distances to your vehicle. The distan-
ces only apply to road level.
Activating/deactivating the rear view
camera
XTo activate: ensure that SmartKey position
2 has been selected with the Start/Stop
button.
XMake sure that the Activation by R gearfunction is selected in the multimedia system
(see the Digital Owner's Manual).
XEngage reverse gear.
The area behind the vehicle is shown with
guide lines in the multimedia system display.
The image from the rear view camera is avail-
able throughout the maneuvering process.
To deactivate: the rear view camera deacti-
vates if you shift the transmission to jor after
driving forwards a short distance.
Messages in the multimedia system dis-
play
The rear view camera may show a distorted view
of obstacles, show them incorrectly or not at all.
Obstacles are not shown by the rear view cam-
era in the following locations:
Rvery close to the rear bumper
Runder the rear bumper
!Objects not at ground level may appear to
be further away than they actually are, e.g.:
Rthe bumper of a parked vehicle
Rthe drawbar of a trailer
Rthe ball coupling of a trailer tow hitch
Rthe rear section of an HGV
Ra slanted post Use the guidelines only for orientation.
Approach objects no further than the bottom-
most guideline.
:Yellow guide line at a distance of approx-
imately 13 ft (4.0 m) from the rear of the
vehicle
;White guide line without steering input –
vehicle width including the exterior mirrors
(static)
=Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering wheel angle (dynamic)
?Yellow lane marking the course the tires will
take at the current steering wheel angle
(dynamic)
AYellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the vehi-
cle
BVehicle center axle (marker assistance)
CBumper
DRed guide line at a distance of approximately
12 in (0.30 m) from the rear of the vehicle
The guide lines are shown when the transmis-
sion is in position k.
The distance specifications only apply to
objects that are at ground level.
Driving systems151
Driving and parking
Z

:Front warning display
;Additional measurement operational readi-
ness indicator for Parking Assist
PARKTRONIC
=Rear warning display
Vehicles with Parking Assist PARKTRONIC:
when Parking Assist PARKTRONIC is opera-
tional (
Ypage 149), additional measurement
operational readiness indicator ;appears in
the multimedia system display. If the Parking
Assist PARKTRONIC warning displays are active
or light up, warning displays :and =are also
active or light up correspondingly in the multi-
media system display.
"Reverse parking" function
Backing up straight into a parking space
without steering input
:White guide line without steering input –
vehicle width including the exterior mirrors
(static)
;Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering wheel angle (dynamic)
=Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) fromthe rear of the vehi-
cle
?Red guide line at a distance of approximately
12 in (0.30 m) fromthe rear of the vehicle
XMake sure that the rear view camera is
switched on (Ypage 151).
The lane and the guide lines are shown.
XWith the help of white guide line :, check
whether the vehicle will fit into the parking
space.
XUsing white guide line :as a guide, carefully
back up until you reach the end position.
Red guide line ?is then at the end of parking
space. The vehicle is almost parallel in the
parking space.
Reverse perpendicular parking with steer-
ing input
:Parking space marking
;Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering wheel angle (dynamic)
XDrive past the parking space and bring the
vehicle to a standstill.
XMake sure that the rear view camera is
switched on (Ypage 151).
The lane and the guide lines are shown.
XWhile the vehicle is at a standstill, turn the
steering wheel in the direction of the parking
space until yellow guide line ;reaches park-
ing space marking :.
XMaintain the steering input and reverse care-
fully.
152Driving systems
Driving an d parking

:Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering wheel angle (dynamic)
XStop the vehicle when it is almost exactly in
front of the parking space.
The white lane should be as close to parallel
with the parking space marking as possible.
:White guide line at the current steering input
;Parking space marking
XTurn the steering wheel to the center positionwhile the vehicle is stationary.
:Red guide line at a distance of approximately
12 in (0.30 m) from the rear of the vehicle
;White guide line without steering input
=End of parking space
XBack up carefully until you have reached the
final position.
Red guide line :is then at the end of parking
space =. The vehicle is almost parallel in the
parking space.
Wide-angle function
:Symbol for the wide-angle view function
;Your vehicle
=Warning displays for Parking Assist
PARKTRONIC
You can also use the rear view camera to select
a wide-angle view.
When Parking Assist PARKTRONIC is opera-
tional (
Ypage 149), a symbol for your own vehi-
cle appears in the multimedia system display. If
the Parking Assist PARKTRONIC warning dis-
plays are active, warning displays =light up in
the multimedia system display in yellow or red
accordingly.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways. It is
active in the 37 mph (60 km/h) to 125 mph
(200 km/h) range. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapses in concentration on the part of the
driver, it suggests taking a break.
Important safety notes
ATTENTION ASSIST is only an aid to the driver. It
might not always recognize fatigue or increasing
inattentiveness in time or fail to recognize them
at all. The system is not a substitute for a well-
rested and attentive driver.
Driving systems153
Driving and parking
Z

The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
Rif the length of the journey is less than approx-
imately 30 minutes
Rif the road condition is poor, e.g. if the surface
is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
Rif you are predominantly driving slower than
37 mph (60 km/h) or faster than 125 mph
(200 km/h)
Rif the time has been set incorrectly
Rin active driving situations, such as when youchange lanes or change your speed
The ATTENTION ASSIST tiredness assessment
is deleted and restarted when you continue the
journey:
Rwhen you switch off the engine
Rwhen you take off your seat belt and open the
driver's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu (Ypage 168) of
the on-board computer.
XSelect the Assistance display for ATTENTION
ASSIST using the on-board computer
(
Ypage 167). The following information is displayed:
Rthe length of the journey since the last break.
Rthe attention level determined by ATTENTION
ASSIST (
Attention Level), displayed in a
bar display in five levels from high to low.
Rif ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System Suspended
message
appears. The bar display then changes what is
shown, e.g. if you are driving at a speed below
37 mph (60 km/h) or above 125 mph
(200 km/h) .
Activating ATTENTION ASSIST
XActivat eATTENTION ASSIST usin gth eon -
boar dcomputer (Ypage 168).
The system determine sth eattention level of
th edriver depending on th esetting selected:
Selection of Standard
:th esensitivit ywit h
whic hth esystem determine sth eattention level
is set to normal.
Selection of Sensitive
:th esensitivit yis set
higher. The attention level detecte dby ATTEN-
TIO NASSIST is adapted accordingly and th e
driver is warned earlier .
When ATTENTION ASSIST is deactivated, th e
é symbol appear sin th emultifunction dis-
play in th eAssistance display.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after th eengin e
has been stopped. The sensitivit yselected cor-
responds to th elast selection activated (Stand‐
ardor Sensitive).
Warn ing in the multifunction display
If fatigue or increasing lapse sin concentration
are detected, awarning appear sin th emulti-
function display: ATTENTION ASSIST
Take aBreak!.
In addition to th emessage shown in th emulti-
function display, you will then hear awarning
tone .
XIf necessary, tak e abreak.
XConfir mthemessage by pressing th ea
butto non th esteering wheel.
On lon gjourneys, tak eregular breaks in goo d
time to allow yourself to rest. If you do no ttak e
a break and ATTENTION ASSIST still detects
increasing lapse sin concentration ,you will be
warned again after 15 minute sat th eearliest .
154Driving systems
Driving and parking

This will only happen if ATTENTION ASSIST still
detects typical indicators of fatigue or increas-
ing lapses in concentration.
If a warning is output in the multifunction dis-
play, a service station search is performed in
COMAND. You can select a service station and
navigation to this service station will then begin.
This function can be activated and deactivated
in COMAND.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist (Ypage 155) and Lane Keeping
Assist (Ypage 157).
Blind Spot Assist
General notes
Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sen-
sors. A warning display in the exterior mirrors
draws your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lane, you will
also receive an optical and audible warning.
Blind Spot Assist supports you from a speed of
approximately 20 mph (30 km/h).
Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of
an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
iUSA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor is intended for use in an automotive radar
system only. Removing, tampering with, or
altering the device will void any warranties,
and is not permitted by the FCC. Do not tam-
per with, alter, or use in any non-approved
way.
Any unauthorized modification to this device
could void the user's authority to operate the
equipment.
Radar sensors
The radar sensors for Blind Spot Assist are inte-
grated into the rear bumper. Make sure that the
bumpers are free from dirt, ice or slush. The
sensors must not be covered, e.g. by overhang-ing loads. Following a severe impact or in the
event of damage to the bumpers, have the func-
tion of the radar sensors checked at a qualified
specialist workshop. Blind Spot Assist may no
longer work properly.
Monitoring area
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is poor visibility, e.g. due to fog, heavy
rain, snow or spray
Rthere are narrow vehicles, e.g. motorcycles or
bicycles
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere are barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
Driving systems155
Driving and parking
Z