2018 MERCEDES-BENZ S CLASS sensor

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There is gl are, e.g. from oncoming traf fi c, th e
sun or re fl ections.R
There is dirt on th e windshield in th e vicinity
of th e multifunction camera or th e camera is
fo gged up, damaged or obscured.R
No or se ve ra l, unclear lane markings are
present fo r one lane, e.g. in a construction
area. R
The lane markings are wo rn , dark or co ve re d.R
The dis ta nce to th e ve hicle in front is to o
small and th e lane markings th us cannot be
de te cted.R
The lane markings ch ange qu ickl y, e.g. lanes
branch off, cross one ano th er or mer ge .R
The ro ad is ve ry nar row and winding.
Ve hicles with Driving Assistance pac ka ge or
Driving Assistance Plus pa ck age: Ac tive Lane
Ke eping Assist uses ra dar sensors to monitor
se ve ra l areas around th e ve hicle. If th e ra dar
sensors in th e re ar bumper are dirty or co ve re d
with sn ow , th e sy st em may be impaired or may
not function. If an obs ta cle in th e lane in which yo u are drivin g has been de te cted, no lane-cor‐
re cting brake application occu rs .
Ac tivating Ac tive Lane Ke eping Assist
q
WA RNING Risk of accident despi te
Ac tive Lane Ke eping Assist wa rn ing
A lane-cor re cting brake application cannot
al wa ys bring th e ve hicle back into th e origi‐
nal lane.

R
The traf fi c situation is upda te d at short, re gu‐
lar inter va ls.R
The subsc ri pt ion information sho ws th e st a‐
tus ( →
page 307).
In fo rm ation on th e ve hicle's position is re gularly
sent to Daimler AG . The da ta is immediately re n‐
de re d anonymous by Daimler AG and fo rw arded
to th e traf fi c da ta pr ov ider. Using th is data, traf‐
fi c re ports re le va nt to th e ve hicle's position are
sent to th e ve hicle. The ve hicle acts as a sensor
fo r th e fl ow of traf fi c and helps to impr ov e th e
qu ality of th e tra ff ic re ports.
If yo u do not wish to transmit yo ur ve hicle posi‐
tion, yo u can ha ve th is service deactivated at an
authorized Mercedes-Benz Center.
Displaying subscription information
Re qu irements:R
The ve hicle is equipped with Live Tr af fi c
Information. Multimedia sy st em:

Information on cleaning and car eA vo iding ve hicle damage
Wi per blades
Fo ld out th e wiper blades and clean th em using a damp clo th .D o not clean th e wiper blades to o of te n.
Ex te ri or lighting
Clean th e lenses with a we t sponge and mild de te rg ent, e.g.
car shampoo. Only use cleaning agents or cleaning clo th s th at are suitable
fo r pla st ic lenses.
Sensors
Clean th e sensors in th e front and re ar bumpers and in th e
ra diator grill with a soft clo th and car shampoo. When using a high-pressure wate r jet, maintain a minimum
dis ta nce of 11 .8 in (30 cm).
Re ar view camera
and 360° Camera R
Open th e camera co ve r with th e multimedia sys‐
te m( →
page 226) . R
Use clear wate r and a soft clo th to clean th e camera lens. Do not use a high-pressure wate r jet.
Ta ilpipes
Clean with cleaning agents re commended by Mercedes-Benz,
particular ly in th e winter and af te r wa shing th e ve hicle. Use acid-free cleaning agents.
Note s on care of th e interior
q
WA RNING Risk of inju ry from pla st ic
parts breaking off af te r th e use of sol‐
ve nt-based care products
Ca re and cleaning products con ta ining sol‐
ve nts can cause su rf aces in th e cockpit to
become porous. When th e airbags are deplo ye d, plastic parts
may break aw ay .

The sy st em ch ec ks th e tire pressure and th e tire
te mp erature of th e tires mounted on th e ve hicle
by means of a tire pressu re sensor.
New tire pressure sensor, e.g. in winter tires, are
automatically ta ught-in th e fi rs t time th ey are
driven.
The tire pressure appears in th e multifunction
display ( →
page 24 7).
If th ere is a subs ta ntial pressure loss or if th e
tire te mp erature is exc essive, a wa rn ing will be
given: R
Vi a display messages ( →
page 487).R
Vi a th e w wa rn ing lamp in th e instrument
clus te r ( →
page 51 7) .
It is th e driver's re sponsibility to set th e tire
pressure to th e re commended cold tire pressure
suitable fo r th e operating situation. Set th e tire
pressure fo r cold tires using a tire pressu re
ga uge. No te th at th e cor re ct tire pressure fo r th e
cur re nt operating situation mu st fi rs t be tau ght-
in to th e tire pressure monitoring sy st em.
In most cases, th e tire pressure monitoring sys‐
te m will au to matically update th e new re fe re nce va lues af te r yo u ha ve ch anged th e tire pressure.
Yo u can, ho we ve r, also update th e re fe re nce va l‐
ues by re st arting th e tire pressure monitoring
sy st em manually ( →
page 420).
Sy st em limitations
The sy st em may be impaired or may not function
in th e fo llowing situations: R
If th e tire pressure is set incor re ctly.R
If th ere is a sudden pressure loss caused, fo r
ex ample by a fo re ign object penetrating th e
tire. R
If th ere is a malfunction caused by ano th er
ra dio signal source.
Make sure to obser ve th e fo llowing fur th er re la‐
te d subjec t: R
No te s on tire pressure ( →
page 41 4)
Checking th e tire pressure with th e tire pres‐
sure moni to ri ng sy st em
Requ irement: R
The ignition is switched on. On-board computer:

Obser ve th e fo llowing when selecting, mounting
and re placing tires:R
Only use tires and wheels of th e same type
(summer tires, winter tires, MOEx te nded
tires) and th e same make.R
Only mount wheels of th e same size on one
axle (left and ri ght).
It is only permissible to ins ta ll a dif fe re nt
wheel size in th e eve nt of a fl at tire in order
to drive to th e specialist wo rk shop.R
Only mount tires of th e cor re ct size onto th e
wheels. R
Ve hicles with a tire pressure monitoring
sy st em: All moun te d wheels must be equip‐
ped with functioning sensors fo r th e tire
pressure monitoring sy st em.R
At te mp eratures below 45 °F (7 °C), use win‐
te r tires or all-season tire mar ke d M+S fo r all
wheels.
Wi nter tires bearing th e M snowflake sym‐
bol in addition to th e M+S marking pr ov ide
th e best possible grip in wintry ro ad condi‐
tions. R
Fo r M+S tires, only use tires with th e same
tread. R
Obser ve th e maximum permissible speed fo r
th e M+S tire mounted.
If th is is below th e ve hicle's maximum speed,
th is must be indicated in an appropriate label
in th e driver's fi eld of vision. R
Break in new tires at moderate speeds fo r
th e fi rs t 60 miles (100 km). R
Re place th e tires af te r six ye ars at th e latest,
re ga rd less of we ar. R
When re placing with tires that do no t fe a‐
ture ru n-flat ch aracteristics: ve hicles with
MOExtended tires are not equipped with a
TIREFIT kit at th e fa ctor y. Equip th e ve hicle
with a TIREFIT kit af te r re placing with tires
th at do not fe ature ru n-flat ch aracteristics,
e.g. winter tires.
Fo r more information on wheels and tires, con‐
ta ct a qu alified specialist wo rk shop.
Be sure to also obse rv e th e fo llowing fur th er
re lated subjects: R
No te s on tire pressure ( →
page 41 4) R
Ti re and Loading In fo rm ation placard
( →
page 420) R
Ti re size designation, load-bea ri ng capacity,
speed ra ting and load ind ex ( →
page 428)R
Ti re pressure ta ble ( →
page 41 6)
Note s on inter ch anging wheels
q
WA RNING Risk of inju ry th ro ugh dif fe r‐
ent wheel sizes
Inter ch anging th e front and re ar wheels if th e
wheels or tires ha ve dif fe re nt dimensions
may se ve re ly impair th e driving ch aracteris‐
tics.
The wheel brakes or wheel suspension com‐
ponents may also be damaged.

Displa y messages
Po ssible causes/consequences and P Solutions
5DGDU 6HQVRUV 'LUW\ 6HH
2SHUDWRU
V 0DQXDO *T he ra dar sensor sy st em is malfunctioning. Po ssible causes are:R
Soiling of th e sensors R
Heavy ra in R
Ex te nded country driving wi th out moving traf fi c, e.g. in th e desert
Driving sy st ems and driving saf et y sy st ems may be malfunctioning or te mp orarily una va ilable.
Once th e cause of th e problem is no longer present, driving sy st ems and driving saf et y sy st ems are av ailable again.
If th e display message does not disappear:

Displa y messages
Po ssible causes/consequences and P Solutions
5DGDU 6HQVRUV 'LUW\ 6HH
2SHUDWRU
V 0DQXDO *T he ra dar sensor sy st em is malfunctioning. Po ssible causes are:R
Soiling of th e sensorsR
Heavy ra in R
Ex te nded driving on inter-urban ro ads without moving traf fi c, e.g. in th e desert
Driving sy st ems and driving saf et y sy st ems may be malfunctioning or te mp orarily una va ilable.
Once th e cause of th e problem is no longer present, driving sy st ems and driving saf et y sy st ems are av ailable again.
If th e display message does not disappear:

Displa y messages
Po ssible causes/consequences and P Solutions
w :KHHO 6HQVRUV 0LVVLQJ *T here is no signal from th e tire pressure sensor of one or more wheels. The pressure of th e af fe cted tire is not
displ ay ed.