brakes MERCEDES-BENZ S-CLASS CABRIOLET 2019 Owner's Manual

1
Speedom eter →
210
2 00CC Chassis malfunctioning →
471
3 003E003D Turn signal indicator →
11 2
4 Multifunction display →
214
5 Tach ome ter →
210
6 00BB ESP®
OFF →
465
00E5 ESP®
→
465
7 0057 High beam →
11 2
0058 Low beam →
111
0060 Parking lights →
111
8 00AC Coolant too hot/cold →
472
9 Coolant temp erature gauge →
210
A L Distance warning →
471
B 00CC Powe rst eering assis tance malfunction‐
ing →
476
C 003D Electrical malfunction →
472
D Brakes (red) →
465 0027
USA only
004D Canada only
E 00E9 Seat belt not fastened →
470
F Fuel le vel display
G 00B6 Fuelreser vewith fuel filler flap location
indicator →
472
H 005E Rear fog light →
11 2
I 0075 Restra int sy stem →
31
J 0028 This indicator lamp has no function
K 00B9 Check Engine →
472
L Electric pa rking brake applied (red) →
465
0049 USA only
0024 Canada only
M 0077 Tire pressure monitoring sy stem →
474
N 0025 ABS malfunctioning →
465
O 0024 Electric pa rking brake (yellow) →
465 At
aglance – Warning and indicator lamps 11

ve
hicle in a compact form , e.g. thero uting of the
electric lines.
Fu rther information can be obtained at http://
www.mercedes-benz.de/qr-code. Data
storage Electronic control units
Elect
ronic control units are ins talled in your vehi‐
cle. Some of these are necessary forth e safe
operation of your vehicle, while some assist you
when driving (driver assis tance sy stems). In
addition, your vehicle pr ovides com fort and
enter tainment functions, which are also made
possible byelectronic control units.
Elect ronic control units contain da tamemories
which cantemp orarily or permanently store
te ch nical information about theve hicle's operat‐
ing state, component loads, main tenance
re qu irements and tech nical events or malfunc‐
tions. In
general, this information documents thest ate
of a component part, a module, a sy stem or the
sur roundings such as:
R operating status of sy stem components (e.g.
fi ll le vels, battery status, tire pressure)
R status messages concerning theve hicle or
its individual components (e.g. number of
wheel revo lutions/speed, longitudinal accel‐
eration, lateral acceleration, display of fas‐
te ned seat belts)
R malfunctions or faults in impor tant sy stem
components (e.g. lights, brakes)
R information on events leading tovehicle
damage
R system reactions in special driving situations
(e.g. airbag deployment, inter vention of sta‐
bility control sy stems)
R ambient conditions (e.g. temp erature, rain
sensor)
In addition toprov iding the actual control unit
function, this data assists the manufacturer in
de tecting and rectifying malfunctions and opti‐
mizing vehicle functions. The majority of this data is
temp orary and is only processed in the
ve hicle itself. Only a small portion of the data is
st ored in theeve nt or malfunction memor y.
When your vehicle is serviced, tech nical da ta
from theve hicle can be read out byservice net‐
wo rkemplo yees (e.g. workshops, manufactur‐
ers) or third parties (e.g. breakdown services).
Services include repair services, maintenance
processes, warranty claims and quality assur‐
ance measures, forex ample. The read out is per‐
fo rm ed via the legally prescribed port forthe
diagnostics connection in theve hicle. The
re spective service network locations or third
parties collect, process and use the data. They
document tech nical statuses of theve hicle,
assist in finding malfunctions and impr oving
qu ality and are transmit tedto the manufacturer,
if necessar y.Fu rthermore, the manufacturer is
subject toproduct liability. Forth is, the manu‐
fa cturer requirestech nical da tafrom vehicles.
Fa ult memories in theve hicle can be reset by a
service outlet as part of repair or maintenance
wo rk. 26
General no tes

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

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

#
Press rocker switch 2up.
If cruise control is activated and Traf fic Sign
Assi sthas de tected a speed restriction sign wi th
a maximum permissible speed and this is dis‐
pla yed in the instrument clus ter: #
Toadopt the de tected speed: pressrocker
switch 3up.
The maximum permissible speed shown by
th e traf fic sign is stored and theve hicle
maintains this speed. #
Todeactivate cruise control:
press rocker switch 3down (CNCL). #
Todeactivate cruise control: pressrock er
switch 1down.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter venes, cruise control is deacti vated.
When you swit choff theve hicle, the last
speed stored is cleared. Ac
tive Di stance Assist DISTRO NIC Fu
nction of Active Di stance Assist
DISTRO NIC Ac
tive Dis tance Assi stDISTRONIC maintains the
set speed on free-flowing roads. If vehicles in
front are de tected, the set dis tance is main‐
ta ined, if necessar y,until theve hicle comes to a
halt. The vehicle accelerates or brakes depend‐
ing on the dis tance totheve hicle in front and
th e set speed. The speed (in thera nge between
15 mp h (2 0 km/h) and 130mp h (2 10km/h))
and the dis tance totheve hicle in front are set
and sa ved on thesteering wheel. Other
features of Active Dis tance Assi st
DISTRONIC:
R Adjusts the driving style depending on the
selected drive program (fuel-saving, comfort‐
able or dynamic) (→ page138)
R Reacts tostationary vehicles de tected in
urban speed ranges (e xcept bicycles and
mo torcyc les)
R Initiates acceleration tothestored speed if
th e turn signal indicator is switched on to
ch ange totheov ertaking lane.
R Take s one-sided overtaking restrictions into
account on highw ays or on multi-lane roads
with separate roadw ays (countr y-dependent).
Ve hicles with Active Parking Assis t:ifthe
ve hicle has been braked toast andstill on multi-
lane, separate roadw aysby Active Dis tance
Assi stDISTRONIC, it can au tomatically follow
th eve hicle in front driving off again within
30 seconds. If a critical situation is de tected
when driving off, a visual and acoustic warning is
given indicating that the driver must now take
control of theve hicle. The vehicle is not acceler‐
ated any fur ther. 16 6
Driving and pa rking

Ac
tive Dis tance Assi stDISTRONIC is only an aid.
The driver is responsible forke eping a safe dis‐
ta nce totheve hicle in front, forve hicle speed
and for braking in good time.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
ambient light.
R The windshield in the area of the camera is
dirty, fogged up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In parking garage s or on roads with steep
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. &
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC.
R Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. #
Take into account the tra ffic situation
before calling up thestored speed. &
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50% of the maximum
possible deceleration. If this decele ration is
not su fficient, Active Dis tance Assi st
DISTRONIC alerts you with a visual and
acoustic warning. #
Inthese cases, adjust your speed and
ke ep a suf ficient di stance. #
Brake theve hicle yourself and/or take
ev asive action. &
WARNING Risk of accident if de tection
function of Active Dis tance Assi st
DISTRONIC is impaired
Ac tive Dis tance Assi stDISTRONIC does not
re act or has a limited reaction:
R when driving on a dif fere nt lane or when
ch anging lanes Driving and parking
167

R
Ifth e HOLD function is deactivated by
depressing the accelera tor pedal or brake
pedal, e.g. byave hicle occupant. #
Alw ays deactivate the HOLD function
and secure theve hicle against rolling
aw ay before leaving theve hicle. *
NO
TEDama gefrom auto matic braking When
Active Brake Assi st,Ac tive Dis tance
Assi stDISTRONIC or the HOLD function are
activated, theve hicle brakes autonomously
in cer tain situations.
To avo id damage totheve hicle, deactivate
th ese sy stems in thefo llowing or similar sit‐
uations: #
During towing #
In a car wash Re
quirements:
R The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened. R
The engine is running or has been au tomati‐
cally switched off bythe ECO start/ stop
function.
R The electric parking brake is released.
R Active Dis tance Assi stDISTRONIC is deacti‐
va ted.
R The transmission is in position 005B,005Eor005C.
Ac tivating the HOLD function #
Dep ress the brake pedal and af ter a short
time quickly depress fur ther until the00D9
display appears in the multifunction displa y. #
Release the brake pedal.
Deactivating the HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until the00D9 dis‐
play disappears from the multifunction dis‐
pla y.
The HOLD function is deactivated in thefo llow‐
ing situations:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d. R
The transmission is switched toposition 005D.
R The vehicle is secured with the electric park‐
ing brake.
In thefo llowing situations, theve hicle is held by
th e transmission position 005Dorby the electric
parking brake:
R The seat belt is unfas tened and the driver's
door is opened.
R The drive sy stem is switched off.
R There is a malfunction in the sy stem or the
po we r supp lyis insuf ficient. AIRMATIC
Fu
nction of AIRMATIC
AIRMATIC is an air suspension sy stem with varia‐
ble damping for impr oved driving comfort. The
all-round le vel control sy stem ensures the best
possible suspension and const antground clear‐
ance, even with a laden vehicle. When driving at
speed, theve hicle is lo wered automatically to
impr ovedriving saf ety and toreduce fuel con‐
sum ption. You also ha vethe option of manually
adjusting theve hicle le vel. 17 8
Driving and pa rking

00CB
symbol appears onthe camera image of
th e multimedia sy stem. &
WARNING Risk of accident caused by
limited de tection per form ance of Drive
Aw ayAssi st
Drive AwayAssi stcannot al ways clearly iden‐
tify objects and traf fic situations.
In su chcases, Drive AwayAssi stmight:
R Warnyou without reason and limit the
ve hicle speed.
R Not warnyou or not limit theve hicle
speed. #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Drive Away
Assi stalone. #
Be prepared tobrake or swer veas nec‐
essar y,prov ided the tra ffic situation
permits and that it is safe totake eva‐
sive action. Drive
AwayAssi stis only an aid. It is not a sub‐
st itute foryo ur attention tothe sur roundings. The
responsibility for safe maneu vering and
pa rking remains with you. Make sure that no
persons, animals or objects etc. are in the
maneu vering range.
A risk of a collision may arise in thefo llowing sit‐
uations, forex ample:
R Ifth e driver mixes up the accelera tor and
brake pedals.
R Ifth e wrong gear is selec ted.
The Drive AwayAssi stfunction is active under
th efo llowing conditions:
R IfPa rking Assist PARKTRONIC is activated.
R Every time thege ar is changed to005E or005B
when theve hicle is at a standstill.
R Ifth e de tected obs tacle is less than appr ox.
3.3 ft(1.0 m) away.
R Ifth e maneuvering assis tance function is
acti vated in the multimedia sy stem.
Sy stem limitations
Drive AwayAssi stis not available on inclines. Fu
nction of Cross Traf fic Alert
% Also read the instructions on Blind Spot
Assist (→ page 202). Ve
hicles with Blind Spot Assis t:drivers can
also be warned of any crossing traf fic when
ba cking up out of a parking space. If a critical
situation is de tected, symbol 1appea rsinthe
multimedia sy stem displa y.Ifth e driver does not
re spond tothewa rning, theve hicle's brakes can Driving and parking
19 5

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

Changing a wheel
Note
s on selecting, installing and replacing
tires Mercedes
-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may not recog‐
nize dangers.
Yo u can ask for information rega rding permit ted
wheel/tire combinations at an authorized
Mercedes-Benz Center. &
WARNING Risk of accident due toincor‐
re ct dimensions of wheels and tires
If wheels and tires of the wrong size are
ins talled, the wheel brakes or wheel suspen‐
sion components may be damaged. #
Alw aysre place wheels and tires with
th ose that fulfill the specifications of
th e original part.
When replacing wheels, make sure tofit the
cor rect:
R Designation R
Model
When replacing tires, make sure toins tallthe
cor rect:
R Designation
R Manufactu rer
R Model &
WARNING Risk of inju rythro ugh exceed‐
ing the specified tire load rating or the
permissible speed rating
Exceeding the specified tire load rating or
th e permissible speed rating may lead totire
dama geand tothe tires bur sting. #
Therefore, only use tire types and sizes
appr ovedfo ryo ur vehicle model. #
Obser vethe tire load rating and speed
ra ting requ ired foryo ur vehicle. *
NO
TEVehicle and tire damage thro ugh
tire types and sizes that ha venot been
appr oved Fo
r saf etyre asons, on lyuse tires, wheels
and accessories which ha vebeen specially
appr ovedby Mercedes-Benz foryo ur vehicle.
These tires are specially adap tedto the con‐
trol sy stems, such as ABS, ESP ®
and
4MATIC, and mar ked as follo ws:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(run-flat tire only for cer tain wheels)
R MO1 = Mercedes-Benz Original (only cer‐
tain AMG tires)
Cer tain characteristics, such as handling,
ve hicle noise emissions, fuel consum ption,
et c. may otherwise be adversely af fected.
Fu rthermore, other tire sizes could result in
th e tires rubbing against the body and axle
components when loaded. This could result
in damage tothe tire or theve hicle. 396
Wheels and tires