2019 MERCEDES-BENZ S-CLASS CABRIOLET traction control

special equipment, such as law enforcement,
can read the information byaccessing theve hi‐
cle or the EDR.
EDR data may be used in civil and criminal mat‐
te rs as a tool in accident reconstruction, acci‐
dent claims and vehicle saf ety. Since the Crash
Data Retrie val (CDR) tool that is used toextract
da ta from the EDR is commercially available,
Mercedes-Benz US A,LLC ("MBUSA") expressly
disclaims any and all liability arising from the
ex traction of this information byunauthorized
Mercedes-Benz personnel.
MBUSA will not share EDR data with others with‐
out the consent of theve hicle owner or, if the
ve hicle is leased, without the consent of the les‐
see. Exceptions tothis representation include
re sponses tosubpoenas bylaw enforcement; by
fe deral, state or local go vernment; in connection
with or arising out of litigation in volvin g MBUSA
or its subsidia ries and af filiates; or, as requ ired
by law.
Wa rning: the EDR is a component of the
Re stra int Sy stem Module. Tamp ering with, alter‐
ing, modifying or removing the EDR component may
result in a malfunction of theRe stra int Sys‐
te m Module and other sy stems.
St ate la wsorregulations rega rding EDRs that
con flict with federal regulation are pre-em pted.
This means that in theev ent of such confl ict,the
fe deral regulation go verns. As of December
20 16 ,17 states ha veenacted la wsrelating to
EDRs. Co
pyright Fr
ee and open source software In
fo rm ation on free and open source software
licenses foryo ur vehicle's software can be found
on the data storage medium in your vehicle
document wallet and on the Internet toge ther
with updates:
http://www.mercedes-benz.com/opensource Re
gis tere d trademar ks R
Bluetoo th®
is a regis tere d trademark of Blue‐
toot h SIG Inc.
R DTS™ is a regis tere d trademark of DTS, Inc. R
Dolby ®
and MLP™ are regis tere d trademar ks
of DOLBY Laboratories.
R BabySmart™, ESP ®
and PRE-SAFE ®
are reg‐
is te re d trademar ksof Daimler AG.
R HomeLink ®
is a regis tere d trademark of
Johnson Controls.
R iPod ®
and iTunes ®
are regis tere d trademar ks
of Apple Inc.
R Burmes ter®
is a regis tere d trademark of
Burmes terAu diosy steme GmbH.
R Microsoft ®
and Windo wsMedia ®
are regis‐
te re d trademar ksof Microsoft Corporation.
R SIRIUS ®
is a regis tere d trademark of Sirius
XM Radio Inc.
R HD Radio™ is a regis tere d trademark of iBiq‐
uity Digital Corporation.
R Graceno te®
is a regis tere d trademark of
Graceno te, Inc.
R ZAGA TSurvey ®
and related brands are regis‐
te re d trademar ksof ZagatSur vey, LLC. General no
tes29

R
HOLD function (→ page 177)
R STEER CONTROL (→ page 159)
R Active Steering Assist (→ page172)
R Night View Assi st (→page 199)
R Active Parking Assist (→ page190)
R Parking Assist PARKTRONIC ( →page 181)
R Rear view camera (→ page185)
R Cruise control (→ page164)
R Blind Spot Assi stand Active Blind Spot Assi st
( → page 202)
R Traf fic Sign Assi st (→page 198) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tire traction, the wheels are
pr eve nted from lo cking.
R Vehicle steerability while braking is ensured.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake pedal can be an indication of hazardous
road
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limitations
R ABS is active from speeds of appr ox. 5 mph
(8 km/h).
R ABS may be impaired or may not function if a
malfunction has occur red and theye l‐
low 0025 ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terthe
engine is star ted. Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an eme rgency braking situation is
increased. #
Depress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo ur eme rgency braking situation
with additional brake forc e.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatical lyboosts the brake pres‐
sure.
R BAS can sho rten the braking dis tance.
R ABS pr events the wheels from locking.
The brakes will function as usual once you
re lease the brake pedal. BAS is deactivated. Fu
nction of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilization. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y.15 6
Driving and pa rking

#
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilization. #
ESP ®
should on lybe deactivated in the
fo llowing situations. Mercedes‑AMG
vehicles: observeth e no tes in
th e Supplement. Otherwise, you may not recog‐
nize dangers.
ESP ®
can moni tor and impr ovedriving stability
and traction in thefo llowing situations, within
ph ysical limits:
R When pulling away on wet or slippe ryroad‐
wa y.
R When braking.
R Instro ng side winds when you are driving
fast erthan 50 mph (8 0 km/h). If
th eve hicle deviates from the direction desired
by the driver, ESP ®
can stabilize theve hicle by
inter vening in thefo llowing ways:
R One or more wheels are braked.
R The engine output is adap ted according to
th e situation.
ESP ®
is deactivated if the00BB ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter:
R Driving stability will no lon ger be impr oved.
R Crosswind Assist is no longer active.
R The drive wheels could spin.
R ETS/4ETS traction control is still active.
% When ESP ®
is deactivated, you are still assis‐
te dby ESP ®
when braking.
ESP ®
is inter vening if the00E5 ESP®
wa rning
lamp flashes in the instrument clus ter:
R Do not deacti vate ESP ®
.
R Only depress the accelera tor pedal as far as
is necessar y. R
Adapt your driving style to suit the cur rent
ro ad and weather conditions.
It can make sense todeactivate ESP ®
in thefo l‐
lowing situations toimpr ovetraction:
R When using snow chains.
R In deep sn ow.
R On sand or gr avel.
% Spinning the wheels results in a cutting
action which pr ovides better grip.
If th e00E5 ESP®
wa rning lamp lights up continu‐
ousl y,ESP ®
is not available due toa malfunction.
Obse rveth efo llowing information:
R Warning and indicator lamps (→ page 464)
R Display messages (→ page418)
ETS/4ETS (Electronic Traction Sy stem)
ETS/4E TStraction control is pa rtof ESP ®
and
makes it possible topull away or accelerate on a
slippery sur face. Driving and pa
rking 157

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.
Ope rating cruise control &
WARNING Risk of accident due tostored
speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates. #
Take into account the tra ffic situation
before calling up thestored speed. Re
quirements:
R ESP ®
must be activated, but not inter vening.
R The driven speed is at least 15mph
(20 km/h).
R The transmission is in position 005B. #
Toactivate cruise control: pressrock er
switch 1up. #
Toactivate cruise control: pressrock er
switch 2up (SET/+) or down (SET/-).
The cur rent speed is stored and maintained
by theve hicle.
or #
Press rocker switch 3up (RES).
The last stored speed is called up and main‐
ta ined bytheve hicle.
If th e last stored speed has pr eviously been
dele ted, the cur rently driven speed is stored.
% When you swit choff theve hicle, the last
speed stored is cleared. #
Toincrease/reduce speed: pressrock er
switch 2up/down tothe pressure point.
The stored speed is increased or reduced by
1 mp h (1 km/h).
or #
Press rocker switch 2beyond the pressure
point.
The stored speed is increased or reduced by
5 mp h (1 0 km/h).
or #
Accelerate theve hicle tothe desired speed. Driving and parking
16 5

Ti
re labeling Overview of tire labeling
1
Uniform Ti reQuality Grading Standard
(→ page 388)
2 DOT,Tire Identification Number
(→ page 389)
3 Maximum tire load (→ page 390)
4 Maximum tire pressu re (→page 390) 5
Manufacturer
6 Characteristics of the tire (→ page 391)
7 Tire size designation, load-beari ng capacity,
speed rating and load ind ex (→page 391)
8 Tire name
% The da tashown in the image is example
data. Ti
re Quality Grading In accordance with
the US Department of Trans‐
por tation's "Uni form Ti reQuality Grading Stand‐
ards", tire manufacturers are requ ired tograde
th eir tires on the basis of thefo llowing thre e per‐
fo rm ance factors: 1
Tread weargrade
2 Traction grade
3 Temp erature grade
% The data shown in the image is example
data.
% The classification is not legally stipulated for
Canada, but it is general lystated.
Tr ead weargrade
The tread wear grade is a comparative rating
based on thewe arrate ofthe tire when tested
under controlled conditions on a specified test
track of the US Department of Transpor tation.
Fo rex ample, a tire graded 150wo uld wear one 388
Wheels and tires

and one-half times as
well on the go vernment
te st track as a tire graded 100.
The relative per form ance of tires depends upon
th e actual conditions of their use, ho wever,and
may depart significantly from the norm due to
va riations in driving habits, service practices and
dif fere nces in road characteristics and climate
conditions.
Tr action grade &
DANG ER Risk of accident due toinade‐
qu ate traction
The traction grade assigned tothis tire is
based on stra ight-ahead braking traction
te sts, and does not include either accelera‐
tion, cornering, hydroplaning or peak traction
ch aracteristics. #
Alw ays adapt your driving style and
drive at a speed tosuit the pr evailing
traf fic and weather conditions. *
NO
TEDama getothe driv etra in from
wheelspin #
Avoid wheelspin. The traction grades – from highest
tolowest –
are AA, A,B and C. Those grades represent the
tire's ability tostop on wet pa vement as meas‐
ured under controlled conditions on specified
go vernment test sur faces made of asphalt and
concr ete.
Te mp erature grade &
WARNING Risk of accident from tire
ove rheating and tire failure
The temp erature grade forth is tire is es tab‐
lished for a tire that is proper ly inflated and
not overloaded. Excessive speed, underinfla‐
tion, or excessive loading, either separately
or in combination, can cause excessive heat
build-up and possible tire failure. #
Obser vethere commended tire pres‐
su res and regularly check the tire pres‐ sure of all tires including
the spare
wheel. #
Adjust the tire pressure as necessar y. The
temp erature grades are A (the highest), B
and C. They represent the tire's resis tance tothe
ge neration of heat and its ability todissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel. Sus‐
ta ined high temp erature can cause the material
of the tire todegenerate and reduce tire life, and
exc essive temp erature can lead tosudden tire
fa ilure. Grade C cor responds toa le vel of per‐
fo rm ance which all passenger car tires must
meet under therequ irements of the US Depart‐
ment of Transpor tation. DO
T,Tire Identification Number (TIN) US tire
regulations stipulate that eve rytire man‐
ufactu rer or retreader mu stimprint a TIN in or
on the side wall of each tire produced. Wheels and tires
389

th
ese are ins talled on theve hicle, but does not
include passengers or luggage.
Maximum tire load: the maximum tire load is
th e maximum permissible weight in kilog rams or
lbs for which a tire is appr oved.
Maximum permissible tire pressure: maxi‐
mum permissible tire pressure for one tire.
Maximum load on one tire: maximum load on
one tire. This is calculated bydividing the maxi‐
mum axle load of one axle bytwo.
PSI (pounds per square in ch):standard unit of
measurement for tire pressu re.
Aspect ratio: ratio between tire height and tire
width in pe rcent.
Ti re pressure: pressure inside the tire applying
an outward forc eto eve rysquare inch of the tire.
The tire pressure is specified in pounds per
square inch (psi), in kilopascals (kPa) or in bar.
The tire pressure should only be cor rected when
th e tires are cold.
Cold tire pressure: the tires are cold when the
ve hicle has been par kedfo r at least 3 hours without direct sunlight on
the tires or theve hicle
has been driven for less than 1 mile (1.6 km).
Ti re contact sur face: the part of the tire that
comes into con tact wi th thero ad.
Ti re bead: the purpose of the tire bead is to
ensure that the tire sits securely on the wheel
ri m. There are se veral wire cores in the tire bead
to preve ntthe tire from changing length on the
wheel rim.
Side wall:the part of the tire between the tread
and the tire bead.
We ight of optional equipment: the combined
we ight of the optional equipment weighing more
th an there placed standard parts and more than
5 lbs (2.3 kg).This optional equipment, such as
high-per form ance brakes, le vel control sy stem, a
ro of luggage rack or high-per form ance bat teries,
is not included in the curb weight and thewe ight
of the accessories.
TIN (Tire Identification Number): a unique
identification number which can be used by a
tire manufactu rerto identify tires, forex ample,
in a product recall, and thus identify the pur‐
ch asers. The TIN is made up of the manufactur‐ er's identity code, tire size, tire type code and
th e manufacturing date.
Load-bearing index: the load-bearing index is a
code that con tains the maximum load-bearing
capacity of a tire.
Tr action: traction is the grip resulting from fric‐
tion between the tires and thero ad sur face.
We ar indicator: narrow bars (tread wear bars)
th at are distributed overth e tire conta ct surface.
If th e tire tread is le vel with the bars, thewe ar
limit of 1/ 16in (1.6 mm) has been reached.
Distribution of vehicle occupants: distribution
of vehicle occupants over designated seat posi‐
tions in a vehicle.
Maximum permissible pa yload weight: nomi‐
nal load and luggage load plus 150 lb (68 kg)
multiplied bythe number of seats in theve hicle. Wheels and tires
395

Display messages
Possible causes/consequences and 0050
0050Solutions #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tires.
0077 Check Tires *T
he tire pressure in one or more tires has dropped significantl y.The wheel position is displa yed. &
WARNING Risk of an accident due toinsuf ficient tire pressure
Ti re pressures that are too low pose thefo llowing hazards:
R The tires may bur st, especially as the load and vehicle speed increase.
R The tires may wearexc essively and/or une venly, which may greatly impair tire traction.
R The driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tire pressure. #
Adjust the tire pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tire pressure (→ page377) and the tires.
0077 Please Correct Tire Pres-
sure *T
he tire pressure is too low in at least one of the tires, or the tire pressure dif fere nce between the wheels is too
great. #
Check the tire pressure and add air, if necessar y. #
When the tire pressure is cor rect, restart the tire pressure monitoring sy stem (→ page 383). Display messages and
warning/indicator lamps 451