2018 MERCEDES-BENZ S CLASS Owners Manual

Re st ra int sy st em
Pr ot ection by th e re st ra int sy st em
The re st ra int sy st em includes th e fo llowing:R
Seat belt sy st emR
Air bags R
Child re st ra int sy st emR
Child seat securing sy st em
The re st ra int sy st em can re duce th e ri sk of ve hi‐
cle occupants coming into contact with parts of
th e ve hicle interior in th e eve nt of an accident. In
th e ev ent of an accident, th e re st ra int sy st em
can also re duce th e fo rc es to which th e ve hicle
occupants are subjected.
A seat belt can only pr ov ide th e best le ve l of pro‐
te ction if it is wo rn cor re ctl y. Depending on th e
de te cted accident situation, Emergency Te nsion‐
ing Devices and/or air bags supplement th e pro‐
te ction of fe re d by a cor re ctly wo rn seat belt.
Emer ge ncy Te nsioning Devices and/or air bags
are not depl oy ed in eve ry accident. In order fo r th e re st ra int sy st em to pr ov ide th e
intended le ve l of pr ot ection, each ve hicle occu‐
pant must obser ve th e fo llowing information:R
Fa st en seat belts cor re ctl y.R
Sit in an almost up ri ght seat position with
th eir back against th e seat backrest.R
Sit with th eir fe et re st ing on th e fl oor, if pos‐
sible. R
Alw ay s secure persons under 5 ft (1.50 m)
ta ll in an additional re st ra int sy st em suitable
fo r Mercedes-Benz ve hicles.
Ho we ve r, no sy st em av ailable to day can com‐
ple te ly elimin ate in juries and fa ta lit
ies in eve ry
accident situation. In particular, th e seat belt
and air bag ge nerally do not pr ot ect against
objects penetrating th e ve hicle from th e outside.
It is also not possible to compl et ely ru le out th e
ri sk of injury caused by th e air bag deploying. Re duced re st ra int sy st em pr ot ection
q
WA RNING Risk of inju ry or death from
modifications to th e re st ra int sy st em
The re st ra int sy st em can no longer function
cor re ctly af te r alterations ha ve been made.
The re st ra int sy st em may th en not pr ot ect
th e ve hicle occupants as intended by fa iling
in an accident or triggering unexpec te dly, fo r
ex ample

Re st ra int sy st em functionality
When th e ignition is switched on, a sy st em self-
te st is per fo rm ed, during which th e u
re st ra int sy st em wa rn ing lamp lights up. It goes
out no later th an a fe w seconds af te r th e ve hicle
is st ar te d. The components of th e re st ra int sys‐
te m are th en functional.
Malfunctioning re st ra int sy st em
A malfunction has occur re d in th e re st ra int sys‐
te m if: R
The u re st ra int sy st em wa rn ing lamp
does not light up when th e ignition is
switched on. R
The u re st ra int sy st em wa rn ing lamp
lights up continuously or re peatedly during a
journe y. q
WA RNING Risk of inju ry or fa ta l injury
due to a malfunction in th e re st ra int sys‐
te m
If th e re st ra int sy st em is malfunctioning,
re st ra int sy st em components may be trig‐
ge re d unintentionally or might not be trig‐
ge re d at all in th e eve nt of an accident. This
may af fe ct th e Emer ge ncy Te nsioning Device
or airbag, fo r ex ample.

The co mp onents of th e re st ra int sy st em can
be activated or deplo ye d independently of
each ot her:
Component De te cted deploy‐
ment situation
Emer ge ncy Te nsion‐
ing Devices Fr ontal impact, re ar
impact, side impact,
ro llo ve r
Driver's air bag, front
passenger air bag Fr ontal impact
Knee air bag Fr ontal impact
Side air bag Side impact
Wi ndow air ba gS ide impact, ro llo ve r,
frontal impact
Belt air bag Fr ontal impact
Cushionbag Fr ontal impact
The front-passenger air bag can be deplo ye d in
an accident only if th e PA SSENGER AIR BA G OFF
indicator lamp is off. If th e front passenger seat is occupied, make sure, bo th before and during
th e journe y, th at th e st atus of th e front
passenger air bag is cor re ct ( →
pa ge 43).
q
WA RNING Risk of bu rn s from hot air bag
components
The air bag parts are hot af te r an air bag has
been depl oy ed.

q
WA RNING Risk of inju ry or death due to
incor re ctly fast ened seat belt
If th e seat belt is not wo rn cor re ctly, it can‐
not per fo rm its intended pr ot ective function.
In addition, an incor re ctly fast ened seat belt
can also cause injuries, fo r ex ample, in th e
ev ent of an accident or when braking or
ch anging direction sudden ly .

Only use seat belts th at ha ve been appr ove d fo r
yo ur ve hicle by Mercedes-Benz.
q
WA RNING Risk of inju ry or death from
deplo ye d py ro te ch nic Emergency Te n‐
sioning Devices
Py ro te ch nic Emergency Te nsioning Devices
th at ha ve been deplo ye d are no longer opera‐
tional and are unable to per fo rm th eir inten‐
ded pr ot ective function.

Re leasing seat belts