MERCEDES-BENZ S CLASS 2018 Owners Manual

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:

ing condition ( →
page 41 6). Obse rv e th e
no te s on tire te mp erature ( →
page 41 4).

Ste p 1
Example 1E xa mp le 2
Combined maximum we ight of occupants and
load (data from th e Ti re and Loading In fo rm ation
placard) 15 00 lbs (680 kg )1 500 lbs (680 kg )
Ste p 2
Example 1E xa mp le 2
Numb er of people in th e ve hicle (driver and
occupants) 51
Distribution of th e occupant sF ro nt: 2
Re ar: 3 Fr ont: 1
We ight of occupant sO ccupant 1: 15 0 lbs (68 kg )
Occupant 2: 18 0 lbs (82 kg )
Occupant 3: 16 0 lbs (73 kg )
Occupant 4: 14 0 lbs (63 kg )
Occupant 5: 12 0 lbs (54 kg ) Occupant 1: 200 lbs (91 kg )
To ta l we ight of all occupant s7 50 lbs (340 kg )2 00 lbs (91 kg ) Wheels and tires 423

Ste p 3
Example 1E xa mp le 2
Pe rm issible load (maximum gros s ve hicle we ight
ra ting from th e Ti re and Loading In fo rm ation
placard minus th e gross we ight of all occupants) 15 00 lbs (680 kg )

Ti re labeling
Overview of tire labeling
1
Uni fo rm Ti re Quality Grading St andard
( →
page 425)
2
DO T, Ti re Identification Nu mber
( →
page 426)
3
Maximum tire load ( →
page 427)
4
Maximum tire pressu re ( →
page 428) 5
Manufacturer 6
Characteristics of th e tire ( →
page 428)7
Ti re size designation, load-bea ri ng capacity,
speed ra ting and load ind ex ( →
page 428)8
Ti re name

and one-half times as we ll on th e go ve rn ment
te st track as a tire graded 10 0.
The re lative per fo rm ance of tires depends upon
th e actual conditions of th eir use, ho we ve r, and
may depart significantly from th e norm due to
va ri ations in driving habits, service practices and
dif fe re nces in ro ad ch aracteristics and climate
conditions.
Tr action gr ade
q
DA NG ER Risk of accident due to inade‐
qu ate traction
The traction gr ade assigned to th is tire is
based on st ra ight-ahead braking traction
te st s, and does not include either accelera‐
tion, cornering, hy droplaning or peak traction
ch aracteristics.

Ne ve r exc eed maximum tire pressure 1 speci‐
fi ed fo r th e tire.
Information on tire ch aracteristics