2019 MERCEDES-BENZ S-CLASS CABRIOLET tires

Menus and submenus
Fu
nctions on the Service menu of the on-
board compu ter On-board computer:
, Service #
Toselect the function: swipe upwards or
down wards on the left-hand Touch Control. #
Press the left-hand Touch Control.
Fu nctions in theService menu:
R Message memory (→ page418)
R Tires:
- Che cking the tire pressure with the tire
pressure monitoring sy stem
(→ page 382)
- Restarting the tire pressure monitoring
sy stem (→ page 383)
R ASSYST PLUS: calling up the service due
date (→ page 336) Calling up
the assistant display On-board computer:
, Assistance
% When you ha veset thest yle to Classic ,you
can view the assis tant displ aymenu con‐
te nts in the left-hand portion of the Instru‐
ment Displa y.
The following displa ysare available on the assis‐
ta nt displ aymenu:
R Assis tant displ ay
R Attention le vel (→ page 196) #
Toswitch between the displa ys:swipe
upwards or down wards on the left-hand
To uch Control. St
atus displa yson the assis tant displ ay:
R 00D7 :AT TENTION ASSIST deactivated
R 00D4: Active Brake Assi stdeactivated
R Light lane markings: Active Lane Keeping
Assist activated
R Green lane markings: Active Lane Keeping
Assist active Instrument Display and on-board computer
215

R
frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
tires must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display
can only calculate the service due da tewhen
th e bat tery is connected. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (→ page 336). Engine compartment
Ac
tive hood (pedestrian pr otection) Operation of
the active hood (pedestrian pro‐
te ction)
In cer tain accident situations, therisk of injury
to pedestrians can be reduced bythe actuation
of the active hood. The rear area of the hood is
ra ised byappr oximately 80 mm.
Fo rth e drive tothewo rkshop, reset the trig‐
ge red active hood yourself. Af terth e active hood
has been triggered, pedestrian pr otection may
be limited.
A qu alified specialist workshop must re-ins tate
th e full functionality of the active hood.
The active hood is not available in all countries.
Re setting the active hood &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in the
fo llowing. #
With your hand flat, push down active hood
1 inthe area around the hinges on bo th
sides (ar rows).
The hood must engage in position. #
Ifth e active hood can be raised slightly at
th ere ar in the area of the hinges, repeat the
st ep until it engages cor rectl y. Maintenance and care
337

R
the windshield wiper switch is in position 005A.
R the SmartK eyis at a minimum dis tance of
10 ft(3 m) away from theve hicle, otherwise
th e trunk lid could open unintentionally.
R in car washes with a con veyo r sy stem: neu‐
tral 005Cis engaged.
% In car washes with a con veyo r sy stem: if you
wo uld like tolea vetheve hicle while it is
being washed, make sure the SmartK eyis
located in theve hicle. The 005Dgear is other‐
wise automatically engaged.
% If, af terth e car wash, youre mo vethewax
from the windshield and wiper rubbers, this
will pr event smearing and reduce wiper
noise. Information on using a po
werwa sher &
WARNING Risk of accident when using
high-pressure cleaning equipment wi th
ro und-spr aynozzles
The wate r jet from a round-spr aynozzle (dirt
grinder) may cause dama getotires and sus‐
pension components that is not visible.
Components damaged in this wa y may fail
unexpec tedly. #
Do not use high-pressure cleaning
equipment wi thround-spr aynozzles to
clean your vehicle. #
Damaged tires or suspension compo‐
nents must be replaced immediatel y. To
avo id damage to yourvehicle, obser vethefo l‐
lowing when using a po werwa sher:
R keep the SmartK eyat least 10ft(3 m) away
from theve hicle. Otherwise the trunk lid
could open unintentionall y.
R maintain a dis tance of at least 11.8 in
(30 cm) totheve hicle. R
vehicles with deco rative foil: parts of your
ve hicle are co vered with a decorative foil.
Maintain a dis tance of at least 27.6 in
(70 cm) between thefo il-c ove red parts of the
ve hicle and the nozzle of the po werwa sher.
Mo vethe po werwa sher nozzle around whilst
cleaning. The waterte mp erature of the
po we rwa sher must not exceed 140 °F
(60 °C).
R obse rveth e information on the cor rect dis‐
tan ce in the equipment manufacturer's oper‐
ating instructions.
R do not point the nozzle of the po werwa sher
directly at sensitive parts such as tires, the
soft top, the wind deflector net, slits, electri‐
cal component parts, batteries, light sources
and ventilation sl ots. Wa
shing theve hicle byhand Obser
vethe legal requ irements, e.g. in a number
of countries, washing byhand is only permitted
in specially designated wash ba ys. #
Use a mild cleaning agent, e.g. car shampoo. 344
Maintenance and care

Emer
gency Re
moving the saf etyve st The saf
etyve sts are located in stowage spaces
in the front door. #
Take the saf etyve st bag out of stowage
space 1. #
Open the saf etyve st bag and pull out the
saf etyve st.
% Safetyve sts can also be stored in there ar
door stowage spaces. 1
Maximum number of washes
2 Maximum wash temp erature
3 Do not bleach
4 Do not iron
5 Do not tumble dry
6 Do not dry clean
7 This is a class 2 vest
The requ irements defined bythe legal standard
are on ly fulfilled in thefo llowing cases:
R ifth e saf etyve st isthe cor rect size
R the saf etyve st is fully closed whilst being
wo rn Re
place the saf etyve st inthefo llowing cases:
R there flective strips are damaged or dirt on
th ere flective strips can no longer be
re mo ved
R the maximum number of washes is exceeded
R thefluorescence has faded Flat tire
Note
s on flat tires &
WARNING Risk of accident due toaflat
tire
A flat tire se verely affects the driving charac‐
te rist ics as well as thesteering and braking
of theve hicle.
Ti re s without run-flat characteristics: #
Do not drive on with a flat tire. #
Chan getheflat tire immediately with an
emer gency spa rewheel or spare wheel.
Alternativel y,consult a qualified spe‐
cialist workshop. 356
Breakdown assis tance

Ti
re s with run-flat characteristics: #
Obse rveth e information and warning
no tes on MOExtended tires (run-flat
tires). In
theeve nt of a flat tire, thefo llowing options
are available depending on your vehicle's equip‐
ment:
R Vehicles with MOExtended tires: it is pos‐
sible tocontinue the journey for a short
period of time. Make sure you obse rvethe
no tes on MOExtended tires (run-flat tire)
(→ page 357).
R Vehicles with a TIREFIT kit: you can repair
th e tires so that it is possible tocontinue the
jou rney for a short period of time. Todo this,
use the TIREFIT kit (→ page 358).
R Vehicles with Mercedes me connect: you
can make a call forRo adside Assis tance via
th eove rhead control panel in the case of a
breakdown (→ page 302).
R Allvehicles: change the wheel
(→ page 400). Note
s on MOExtended tires (run-flat tire) &
WARNING Risk of accident when driving
in eme rgency mode
When driving in emer gency mode, the han‐
dling characteristics are impaired. e.g. when
cornering, when accelerating stronglyand
when braking. #
Do not exceed the permissible maxi‐
mum speed for MOExtended tires. #
Avoid any abrupt steering and driving
maneuvers as well as driving over
obs tacles (curbs, pot holes, off-road).
This applies, in pa rticular, toa loaded
ve hicle. #
Stop driving in the emer gency mode if
yo u notice:
R banging noise
R vehicle vibration
R smoke which smells like rubber
R continuous ESP ®
inter vention
R crac ksin tire side walls #
After driving in emergency mode ha ve
th erims checkedby aqu alified special‐
ist workshop with rega rd totheir fur ther
use. #
The defective tire must be replaced in
eve rycase. Wi
th MOExtended tires (run-flat tire), you can
continue todrive your vehicle even if there is a
tot al loss of pressure in one or more tires. How‐
eve r,th e tire af fected must not show any clearly
visible damage.
Yo u can recognize MOExtended tires bythe
MOExtended marking which appears onthe side
wa ll of the tire.
Ve hicles with tire pressure monitoring sys‐
te m: MOExtended tires may only be used in con‐
junction wi than activated tire pressure monitor‐
ing sy stem.
If a pressure loss warning message appears in
th e multifunction displa y,proceed as follo ws:
R Check the tire for dama ge.
R If driving on, obser vethefo llowing no tes. Breakdown assis
tance 357

#
Push the plug of hose 5into flange 6of
tire sealant bottle 1until the plug engages. #
Place tire sealant bottle 1head down wards
into recess 2ofthe tire inflation compres‐
sor. #
Remo vethe cap from valve 7 onthefa ulty
tire. #
Screw filling hose 8onto valve 7. #
Insert connec tor4 into a 12V soc ket in
yo ur vehicle. #
Switch on the ignition. #
Press on and off switch 3onthe tire infla‐
tion compressor.
The tire inflation compressor is switched on.
The tire is inflated. Fir st, tire sealant is pum‐
ped into the tire. The pressure may brief ly
ri se toappr oximately 500 kPa (5 bar/73 psi).
Do not switch off the tire inflation compres‐
sor du ring this phase. #
Let the tire inflation compressor runfo r a
maximum of eight minutes.
The tire should then ha veattained a tire
pressure of at least 180 kPa (1.8 bar/26 psi).
If tire sealant lea ksout, make sure you clean the
af fected area as quickly as possible. It is prefera‐
ble touse clear water.
If yo uge t tire sealant on your clo thing, ha veit
cleaned as soon as possible with per chloroe thy‐
lene.
If a ti repressure of 180 kPa (1.8 bar/26 psi)
has not been attained af ter eight minutes: #
Switch off the tire inflation compressor. #
Unscr ew thefilling hose from theva lve of the
fa ulty tire.
Please no tethat tire sealant may leak out when
unscr ewing thefilling hose. #
Drive forw ards or reve rseve ry slowly for
appr oximately 33 ft(10 m). #
Pump up the tire again.
Af ter a maximum of eight minutes the tire
pressure must be at least 180 kPa (1.8 bar/
26 psi). &
WARNING Risk of accident due tothe
specified tire pressure not being reached
If th e specified tire pressure is not reached
af te rth e specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this ins tance.
Dama ged tires and a tire pressure that is too
low can significantly impair braking and han‐
dling characteristics. #
Do not continue driving. #
Consult a qualified specialist workshop. 360
Breakdown assis tance

If a tire pressu
reof180 kPa (1.8 bar/26 psi)
has been attained af ter eight minutes: &
WARNING Risk of accident from driving
wi th sealed tires
A tire temp orarily sealed with tire sealant
impairs driving characteristics and is not
suitable for higher speeds. #
Adapt your driving style according lyand
drive carefull y. #
Do not exceed the maximum speed
limit with a tire that has been repaired
using tire sealant. Obser
vethe maximum permissible speed for a
tire sealed with tire sealant 50 mph (8 0 km/h). #
Affix th e upper section of the TIREFIT sticker
to the instrument clus ter in a location where
it will be easi lyseen bythe driver.
* NO
TEStaining caused byleaking tire
sealant Af
ter use, excess tire sealant may leak out
from thefilling hose. #
Therefore, place thefilling hose in the
plastic bag that con tained the TIREFIT
kit. +
ENVIRONMEN
TALNO TEEnvironmental
pollution caused byenvironmen tally ir re‐
sponsible disposal Ti
re sealant contains polluta nts. #
Have the tire sealant bottle disposed of
professionall y,e.g. at an authorized
Mercedes-Benz Center. #
Switch off the tire inflation compressor. #
Unscr ew thefilling hose from theva lve of the
fa ulty tire. #
Stow th e tire sealant bottle, the tire inflation
compressor and thewa rning triangle. #
Pull away immediatel y. #
Stop driving af ter appro ximately ten minu tes
and check the tire pressure using the tire
inflation compressor.
The tire pressure must now be at least
13 0 kPa (1.3 bar/19 psi). &
WARNING Risk of accident due tothe
specified tire pressure not being reached
If th e specified tire pressure is not reached
af te r a brief drive, the tire is too badly dam‐
aged. The tire sealant cannot repair the tire
in this ins tance.
Dama ged tires and tire pressure that is too
low can significantly impair the braking prop‐
erties and the handling characteristics. #
Do not continue driving. #
Consult a qualified specialist workshop. In cases such as
the one mentioned abo ve, con‐
ta ct an au thorized Mercedes-Benz Center. Or
call 1-800-FOR-MERC edes (inthe USA) or
1-800-387-0 100(in Canada). #
Cor rect the tire pressure if it is still at least
13 0 kPa (1.3 bar/19 psi). You will find the
va lues in theTire and Loading In form ation
placard on the B-pillar on the driver's side or
in the tire pressure table in the fuel filler flap. #
Toincrease the tire pressure: switchon
th e tire inflation compressor. Breakdown assis
tance 361

Note
s on noise or unusual handling charac‐
te rist ics
While driving, pay attention tovibrations, noises
and unusual handling characteristics, e.g. pulling
to one side. This may indicate that the wheels or
tires are damaged. If you suspect that a tire is
defective, reduce your speed immediatel y.Stop
th eve hicle as soon as possible tocheck the
wheels and tires for dama ge. Hidden tire dam‐
age could also be causing the unusual handling
ch aracteristics. If youfind no signs of damage,
ha ve the tires and wheels checked at a qualified
specialist workshop. Note
s onregular lyinspecting wheels and
tires &
WARNING Risk of accident from dam‐
aged tires
Dama ged tires can cause tire pressure loss.
As a result, you could lose cont rol of your
ve hicle. #
Check the tires regularly for signs of
dama geand replace any damaged tires
immediatel y. &
WARNING Risk of aquaplaning due to
insuf ficient tire tread
Insu fficient tire tread will result in reduced
tire grip. The tire tread is no longer able to
dissipate water.
This means that in heavy rain or slush the
ri sk of hydroplaning is increased, in particu‐
lar if vehicle speed is not adap tedto suit the
conditions.
If th e tire pressure is too high or too lo w,
tires may exhibit dif fere nt le vels of wear at
dif fere nt locations on the tire conta ct sur‐
fa ce. #
Thus, you should regularly check the
tread de pth and the condition of the tire
conta ct surface across the entire width
of all tires. Minimum tread dep
thfor:
R Summer tires: 00CEin (3 mm)
R M+S tires: 00CFin (4 mm) #
For saf etyre asons, replace the tires
before the legally prescribed limit for
th e minimum tread dep thisreached. Car
ryout thefo llowing checks on all wheels reg‐
ularly, at least once a month or as requ ired, e.g.
prior toa long journey or driving off- road:
R Check the tire pressure (→ page377).
R Visually inspect tires and wheels for dama ge.
R Check theva lve caps.
The valves must be pr otected against mois‐
ture and dirt bytheva lve caps appr oved
especially foryo ur vehicle byMercedes-Benz.
R Visual check of the tire tread dep thand the
tire contact su rface across the entire width.
The minimum tread dep thfor summer tires is
00CE in (3 mm) and for winter tires 00CFin
(4 mm). 376
Wheels and tires