2018 MERCEDES-BENZ S-CLASS SEDAN winter tires

Requirements:RESP®must be activated, but not inter vening.
RThe driving speed is at least 15mp h
(20 km/h).
#To switch on cruise control: pushrocker
switch 1up.
#Toactivate cruise control: pushrock er
switch 2up (SET+) or down (SET-).
#Remo veyour foot from the accelerator pedal.
The cur rent speed is stored and maintained
by theve hicle.
#To increase/reduce speed: pressrock er
switch 2up/down.
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
#Ac celerate theve hicle tothe desired speed.
#Push rocker switch 2up.
If cruise control is activated and Traf fic Sign
Assist has detected speed restriction signs, and
th ese maximum permissible speeds are dis‐
pla yed in the instrument clus ter:
#To adopt the de tected speed: pushrocker
switch 3up.
The maximum permissible speed shown by
th e traf fic sign is stored and theve hicle
maintains this speed.
#To deactivate cruise control:
push rocker switch 3(CNCL) down.
When cruise control is deactivated:
RRo cker switch 2(SET+) or (SET-) sa vesth e
cur rently driven speed and theve hicle main‐
ta ins this speed.
RRo cker switch 3(RES) calls up the speed
last stored and theve hicle maintains this
speed.
#To switch off cruise control: pushrock er
switch 1down.
% Ifyo u brake, deactivate ESP
®or if ESP®
inter venes, cruise control is deacti vated.
When youswit choff theve hicle, the last
speed stored is cleared.
Setting the speed limit for winter tires
Multimedia sy stem:
,9HKLFOH.î 9HKLFOH 6HWWLQJV.:LQ
WHU 7LUHV /LPLW
#Select a speed or deactivate the function.
19 8
Driving and pa rking

Noise or unusual handling characteristics
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.
Checking wheels and tires regular ly
&
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
Insuff icient 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 surf ace across the entire width
of all tires.
Minimum tread dep thfor:
RSummer tires: âin (3 mm)
RM+S tires: ãin (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:
RCheck the tire pressure (→page 414).
RVisual inspection of wheels and tires for
damage.
RCheck 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.
RVisual check of the tread dep thand the tire
conta ct surf ace across the entire width.
The minimum tread dep thfor summer tires is
â in (3 mm) and for winter tires ãin
(4 mm).
Wheels and tires 41
3

The system checks the tire pressure and the tire
te mp erature of the tires mounted on theve hicle
by means of a tire pressure sensor.
New tire pressure sensor, e.g. in winter tires, are
automatically taught-in thefirs t time they are
driven.
The tire pressure appears in the multifunction
display (
→page 247).
If th ere is a subs tantial pressure loss or if the
tire temp erature is excessive, a warning will be
given:
RVi a display messages (→page 487).
RViath eh warning lamp in the instrument
clus ter (→page 517).
It is the driver's responsibility toset the tire
pressure tothere commended cold tire pressure
suitable forth e operating situation. Set the tire
pressure for cold tires using a tire pressure
ga uge. No tethat the cor rect tire pressure forth e
cur rent operating situation must firs t be taught-
in to the tire pressure monitoring sy stem.
In most cases, the tire pressure monitoring sys‐
te m will auto matically update the new refere nce va
lues af teryo u ha vechanged the tire pressure.
Yo u can, ho wever,also update there fere nce val‐
ues byrestarting the tire pressure monitoring
sy stem manually (
→page 420).
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
RIf th e tire pressure is set incor rectly.
RIfth ere is a sudden pressure loss caused, for
ex ample byafo re ign object penetrating the
tire.
RIf th ere is a malfunction caused byano ther
ra dio signal source.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
RNotes on tire pressure (→page 414)
Checking the tire pressure with the tire pres‐
sure moni toring sy stem
Requ irement:
RThe ignition is switched on. On-board computer:
,6HUYLFH.7LUHV
One of thefo llowing displa ysappears:
RCur rent tire pressure of ea chwheel:
R7LUH SUHVVXUH ZLOO EH GLVSOD\HG DIWHU GULYLQJ D
IHZ PLQXWHV
R7LUH 3UHVVXUH 0RQLWRU $FWLYH: thete ach-in
process of the sy stem is not yet comple te.
The tire pressures are already being moni‐
to re d.
#Compare the tire pressure with there com‐
mended tire pressure forth e cur rent operat‐
Wheels and tires 41
9

IndexS peedrating
ZR...Y
1up to186mp h(3 00 km/h)
ZR...(..Y)
1ove r18 6mp h(3 00 km/h)
ZR
1ove r14 9mp h (240 km/h)
RSpecifying the speed rating as the "ZR" index
in tire code 4is optional for tires up to
18 6mp h(3 00 km/h).
RIfyo ur tire co de4 includes "ZR"andthere
is no speed rating 7,find out what the max‐
imum speed is from the tire manufacturer.
RIf load-bearing index 6and speed rating 7
are in brac kets, the maximum speed rating of
yo ur tire isabo ve186mp h (300 km/h). To
fi nd out the maximum speed, ask the tire
manufacturer. All-weather tires and winter tires
Inde
xS peedrating
Q M+S
2up to100mp h (160 km/h)
T M+S
2up to118mp h(190 km/h)
H M+S
2up to130mp h (2 10km/h)
V M+S
2up to149mp h (240 km/h)
Winter tires bear thei snowflake symbol
and fulfill therequ irements of theRu bber Manu‐
fa cturers Association (RMA) and theRu bber
Association of Canada (RAC) rega rding the tire
traction on sno w.
Load index 8
:RNo specification given: standard load (SL)
tire
R"XL" or "Extra Load": extra load tire or rein‐
fo rc ed tire
R"Light Load": light load tire
R"C", "D", "E": a load range that depends on
th e maximum load that the tire can car ryat a
cer tain pressure
Definition of termsfo r tires and loading
Ti re stru ctureand characteristics: describes
th e number of la yers or the number of rubber-
coated belts in the tire conta ct surface and the
tire wall. These are made of steel, nylon, poly‐
es ter and other materials.
Bar: metric unit for tire pressure .
14 .5038 pounds per square inch (psi) and
10 0 kilopascal (kPa) is the equivalent of one bar.
DOT (Department of Transport ation):DOT-
mar ked tires fulfill therequ irements of the
US Department of Transpor tatio n.
Av erage weight of theve hicle occupants: the
number of vehicle occupants for which th eve hi‐
cle is designed, multiplied by150 lb (68 kg).
1"ZR" stated in the tire code.2Or "M+S i"for winter tires
430
Wheels and tires

Observethefo llowing when selecting, mounting
and replacing tires:
ROnly use tires and wheels of the same type
(summer tires, winter tires, MOEx tended
tires) and the same make.
ROnly mount wheels of the same size on one
axle (left and right).
It is only permissible toins tall a dif fere nt
wheel size in theeve nt of a flat tire in order
to drive tothe specialist workshop.
ROnly mount tires of the cor rect size onto the
wheels.
RVe hicles with a tire pressure monitoring
sy stem: All mounte d wheels must be equip‐
ped with functioning sensors forth e tire
pressure monitoring sy stem.
RAt temp eratures below 45 °F (7 °C), use win‐
te r tires or all-season tire mar ked M+S for all
wheels.
Wi nter tires bearing thei snowflake sym‐
bol in addition tothe M+S marking pr ovide
th e best possible grip in wintry road condi‐
tions.
RFo r M+S tires, only use tires with the same
tread.
RObser vethe maximum permissible speed for
th e M+S tire mounted.
If th is is below theve hicle's maximum speed,
th is must be indicated in an appropriate label
in the driver's field of vision.
RBreak in new tires at moderate speeds for
th efirs t 60 miles (100 km).
RRe place the tires af ter six years at the latest,
re ga rdless of wear.
RWhen replacing with tires that do n otfea‐
ture run-flat characteristics: vehicles with
MOExtended tires are not equipped with a
TIREFIT kit at thefa ctor y.Equip theve hicle
with a TIREFIT kit af terre placing with tires
th at do not feature run-flat characteristics,
e.g. winter tires.
Fo r more information on wheels and tires, con‐
ta ct a qualified specialist workshop.
Be sure toalso observ eth efo llowing fur ther
re lated subjects:
RNo tes on tire pressure (→page 414)
RTire and Loading Info rmation placard
(→page 420)
RTi re size designation, load-beari ng capacity,
speed rating and load ind ex(→page 428)
RTire pressure table (→page 416)
Note s on inter changing wheels
&
WARNING Risk of injury thro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels if the
wheels or tires ha vediffere nt dimensions
may se verely impair the driving characteris‐
tics.
The wheel brakes or wheel suspension com‐
ponents may also be damaged.
#Ro tate front and rear wheels only ifth e
wheels and tires are of the same dimen‐
sions.
Wheels and tires 435

Rain closing function ............................ .80
SmartK ey................................................... 58
Battery .................................................. 60
Fe atures ................................................ 58
Ke yring attachment .............................. 60
Mechanical key ...................................... 60
Overvie w.............................................. .58
Pa nic alarm ........................................... 59
Problem ................................................. 61
Un locking setting .................................. 59
Sma rtphone
Cooling or heating theve hicle inte‐
ri or .......................................................1 66
St arting theve hicle .............................. 167
Smartphone see Android Auto
see Apple CarPlay™
see Telephone
Snow chains ............................................. 414
Soc ket (12 V) ............................................ 134
Fr ont center console ........................... 134
Re ar passenger compartment ............ .134
Tr unk .................................................. .136 Soc
ket (1 15V) .......................................... 135
Re ar passenger compartment ............ .135
Software update Impor tant sy stem updates .................. 288
Information .......................................... 287
Pe rforming ............ .............................. 287
Sound PRE-SAFE
®Sound ................................. 45
Wheels and tires ..................................4 13
Sound see Burmes ter
®sur round sound sy stem
see Sound settings
Sound settings ....................................... .357
Ad justing the balance/fader ............... 358
Ad justing treble, mid-range and bass
settings ............................................... 358
Au tomatic volume adjustment ............ .358
Calls up the sound menu ..................... 358
Information .......................................... 357
Speech dialog sy stem
see Voice Cont rol Sy stem
Speed index (tires) ..................................428 Speed limit
for winter tires
Setting ................................................. 198
Speedome ter
Digital ..................................................2 49
Spotlight function Activating/deactivating .......................2 38
St andby mode
Ac tivating/deactivating .......................1 87
Fu nction .............................................. 187
St anding lights ........................................ 143
St art/S top button
St arting theve hicle ............................. 166
Switching off theve hicle ..................... 179
Switching on the po wer supply or
ignition ................................................ 165
St art/s top function
see ECO start/ stop function
St arting the engine
see Vehicle
St arting-o ffaid
see Hill start assist
St ation
Deleting ............................................... 352
54
8
Index