traction control MERCEDES-BENZ AMG GT ROADSTER 2020 Owners Manual

R
Do not deacti vate ESP ®
under any circum‐
st ances.
R Onlydepress the accelera tor pedal as far as
is necessar y.
Cha racteristics of ESP ®
SPORT &
WARNING Risk of skidding if ESP ®
SPORT is used incor rectly
When you activate ESP ®
SPOR T,there is an
increased risk of skidding and having an acci‐
dent. #
Activate ESP ®
SPO RTonly in the cir‐
cums tances described belo w.When ESP
®
SPORT is activated, theå and
Æ warning lamps light up continuously in the
instrument clus ter.
Select ESP ®
SPORT when theve hicle's own
ove rste ering and under steering characteristics
are desired, e.g. on designated roads.
Driving with ESP ®
SPO RTor with ESP ®
deactiva‐
te dre qu ires an extreme ly qualified and experi‐
enced driver. If ESP
®
SPORT is activated and one or more
wheels start tospin, the÷ ESP®
wa rning
lamp on the instrument clus terflashes. ESP ®
th en only stabilises theve hicle toa limited
deg ree.
ESP ®
SPORT also has thefo llowing characteris‐
tics:
R ESP ®
on ly impr oves driving stability toa limi‐
te d deg ree.
R ETS/4ETS traction control is still active.
R The engine's torque is on lyrestricted to a
limited deg ree and the drive wheels can spin.
The spinning of the wheels results in a cut‐
ting action for better traction on loose sur fa‐
ces.
R ESP ®
continues toprov ide assis tance when
th e brakes are firm lyapplied. Cha
racteristics when ESP ®
is deactivated &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilisation. #
ESP ®
should on lybe deactivated in the
fo llowing situations. When ESP
®
is deactivated, theå and¤
wa rning lamps light up continuously in the
instrument clus ter.
Deactivating ESP ®
has thefo llowing ef fects:
R Driving stability will no lon ger be impr oved.
R The drive wheels could spin.
R ETS/4ETS traction control is still active.
% Even when ESP ®
is deactivated, you are still
assis tedby ESP ®
when braking ha rd.
It may be best toactivate ESP ®
SPO RTor deacti‐
va te ESP ®
in thefo llowing situations:
R When using snow chains. 134
Driving and pa rking

R
In deep sno w.
R On sand or gra vel.
% Spinning the wheels results in a cutting
action, which enhances traction.
% Activate ESP ®
as soon as the situations
described abo veno longer apply. ESP ®
will
ot herwise not be able tostabilise theve hicle
if th eve hicle starts toskid or a wheel starts
to spin.
If th e÷ ESP®
wa rning lamp lights up continu‐
ously even when ESP ®
is acti vated, ESP ®
is not
av ailable due toa malfunction.
Obse rve any information which may be displa yed
in the instrument clus ter:
R Indicator and warning lamps (/ page 330)
R Display messages
ETS/4ETS (Electronic Traction Sy stem)
ETS/4ETS traction control is pa rtof ESP ®
.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if
they spin. R
More drive torque is transferred tothe wheel
or wheels with traction. Ac
tivating/deactivating ESP ®
(Electronic Sta‐
bility Prog ram) #
Toactivate ESP ®
SPORT: press and hold
display button 1until thero ad in button
symbol 2lights up yello w.
The å andÆ warning lamps appear in
th e instrument clus ter. #
Todeactivate ESP ®
:press and hold displ ay
button 1until thero ad in button symbol 2
lights up red.
The å and¤ warning lamps appear in
th e instrument clus ter.
% When you deactivate ESP ®
in theI drive
prog ram, AMG Dynamics auto matically
switches totheMas terleve l. #
Toactivate ESP ®
:press and hold display
button 1until thero ad in button symbol 2
lights up blue.
The å, Æand¤ warning lamps go
out.
When the÷ symbol is shown with a red!on
th e display button, ESP ®
is malfunctioning.
Obser vethe information on warning lamps and
display messages which may be shown in the
instrument clus ter. Driving and pa
rking 13 5

Obser
vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 131).
Displa yson the multifunction display
R h (grey): cruise control is selected but
not yet acti vated.
R h (green): cruise control is active.
A stored speed appears along with theh dis‐
pla y.
% The segments extending from the cur rent
st ored speed tothe end of the scale, or to
th e set winter tyre limit, light up in the
speedome ter.
Sy stem limits
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lo werge ar in good time on long
and steep downhill gradients. Take particular
no te ofthis when driving a laden vehicle. By
doing so, you will make use of the engine's brak‐
ing ef fect. This relie vesth e load on the brake sy
stem and pr events the brakes from overheat‐
ing and wearing tooqu ickl y.
Do not use cruise control in thefo llowing situa‐
tions:
R In traf fic situations whi chrequ ire frequent
ch anges of speed, e.g. in heavy traf fic, on
winding roads.
R On slippe ryroads. Accelerating can cause
th e drive wheels tolose traction and the
ve hicle could then skid.
R Ifyo u are driving when visibility is poor.
Fu nction of the limi ter
The limiter restricts the speed of theve hicle. To
re duce the speed tothe set speed, the limiter
applies the brakes automaticall y.
Yo u can limit the speed as follo ws:
R Variable: for speed restrictions, e.g. in built-
up areas.
R Perm anen t:for long-term speed restrictions,
e.g. when driving in winter tyre mode.
The variable limiter is operated using the cor re‐
sponding steering wheel buttons. You can store any
road speed from 30 km/h to250 km/h or
up tothe set winter tyre limit. You can also per‐
fo rm settings while theve hicle is stationary if
th eve hicle has been star ted.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 131).
Dis playson the multifunction display
R È (gre y): variable limiter is selec ted but
not yet acti vated.
R È (flashes gr ey):va riable limiter is temp o‐
ra rily passive.
R È (green): variable limiter is activated.
A stored speed appears along with theÈ dis‐
pla y.The segments in the speedome ter light up,
up tothe cur rently stored speed.
% When the driving speed is greater than the
st ored speed, display Èflashes.
Kickd own
If yo u depress the accelerator pedal be yond the
pressure point (kickdown), theva riable limiter
swit ches topassive mode. The Limiter passive
message appears in the multifunction displa y. Driving and pa
rking 13 9

Ac
tive Di stance Assist DISTRO NIC displaysin
th e instrument clus terAssi
stance graphic
1 Vehicle in front
2 Distance indica tor
3 Set specified di stance
Pe rm anent status display of Active Di stance
Assist DIST RONIC
R k (white):Ac tive Dis tance Assi st
DISTRONIC selected, speci fied dis tance set
R k (green): Active Dis tance Assi st
DISTRONIC acti ve, specified dis tance set and
ve hicle de tected The
stored speed is shown along with the per‐
manent status display and highlighted on the
speedome ter.When Active Dis tance Assi st
DISTRONIC is passi ve,th e speed is gr eyed out.
% On mo torw ays or high-speed major roads,
th e green çvehicle symbol is displa yed
cyclically when theve hicle is ready topull
aw ay.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Dis tance Assi st
DISTRONIC, the sy stem is switched topas‐
sive mode. The çsuspended message
appears in the multifunction displa y.
Display on the speedome ter
The stored speed is highlighted on the speedom‐
et er. If the speed of theve hicle in front is less
th an thestored speed, the segments in the
speedome ter light up. The deactivation of Active
Dis tance Assi stDISTRONIC, as well as altera‐
tions tothestored speed and the dis tance tobe
maintained, are displa yed in the control feed‐
back of the multifunction display on a single line. Sy
stem limits
The sy stem may be impaired or may not function
in thefo llowing situations, forex ample:
R In sn ow,ra in, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R The windsc reen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi- stor ey car pa rks or on roads with
st eep uphill or downhill gradients.
R Ifth ere are nar rowvehicles in front, such as
bicycles or mo torcyc les.
In addition, on slippery roads, braking or accel‐
erating can cause one or se veral wheels tolose
traction and theve hicle could then skid.
Do not use Active Dis tance Assi stDISTRONIC in
th ese situations. 14 2
Driving and pa rking

#
Neverfit snow chains on the front
wheels. #
Only fit snow chains on there ar wheels
in pairs. *
NO
TEDama getothe wheel trim from fit‐
te d snow chains If sn
ow ch ains are fitted tosteel wheels, the
wheel trims can be damaged. #
Remo vethe wheel trims of steel wheels
before fitting snow chains. Obse
rveth efo llowing no tes when using snow
ch ains:
R Snow ch ains are on ly permissible for cer tain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Cent re.
R For saf etyre asons, only use snow chainsthat
ha ve been specifically appr ovedfo ryo ur
ve hicle byMercedes-Benz, or snow chains
with the same quality standard. R
If sn ow ch ains are fitted, the maximum per‐
missible speed is 50 km/h.
R Vehicles with le vel control: if snowchains
are fitted, only drive at raised vehicle le vel.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(/ page 141).
% You can deactivate ESP ®
to pull away
( / page 135). This allo ws the wheels to
spin, achieving an increased driving forc e. Ty
re pressure Note
s on tyre pressure &
WARNING Risk of accident due toinsuf‐
fi cient or excessive tyre pressure
Underinflate d oroverinfla ted tyres pose the
fo llowing risks:
R The tyres may bur st, especially as the
load and vehicle speed increase. R
The tyres may wearexc essively and/or
une venly, which may greatlyimpair tyre
traction.
R The driving characteristics, as well as
st eering and braking, may be greatly
impaired. #
Comply with there commended tyre
pressure and check the tyre pressure of
all tyres including the spare wheel regu‐
larly:
R at least once a month
R when the load changes
R before embarking on a lon ger journey
R if operating conditions change, e.g. off-
ro ad driving #
Adjust the tyre pressure as necessar y. Ty
re pressure which is too high or too low can:
R Shor tenth e service life of the tyres.
R Cause increased tyre damage.
R Adversely af fect driving characteristics and
th us driving saf ety, e.g. due toaquaplaning. 264
Wheels and tyres

Display messages
Possible causes/consequences and M MSolutions
Electronic rear axle differ-
ential lock currently
unavailable *T
he electronic locking dif fere ntial is overheated. #
Let the electronic locking dif fere ntial cool down bydriving defensively.
Rear spoiler control sys-
tem inoperative *T
herear wing cannot reach the end position during retraction and extends again if possible.
The vehicle's speed may be restricted.
If re traction of there ar wing is bloc ked, e.g. byice: #
Ensure that the cause of the bloc kage has been remo ved. #
Switch off the engine and lock theve hicle. #
Start theve hicle af ter a few minutes.
The rear wing will mo vetothe original position.
If th e problem persists or the cause cann otbe de tected: #
Consult a qualified specialist workshop.
Rear spoiler inoperative
Limit XXX km/h *T
hevehicle's speed is limited totheva lue displa yed. Therefore, there ar wing cannot reach the end position during
ex tension and only extends as far as is possible.
If ex tension of there ar wing is bloc ked, e.g. byice: #
Ensure that the cause of the bloc kage has been remo ved. #
Switch off the engine and lock theve hicle. 302
Display messages and warning/indicator lamps