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backrest must be adjusted to an upright
posit ion.
- Always make sure that there is nothing
on the front passenger seat that will
cause the capacitive passenger detection
system in the seat to s ignal to the Airbag
System that the seat is occupied by a
person when it is not, or to signa l that it
is occupied by som eone who is heavier
than t he pe rson actually sitting on t he
sea t . The presence of addition al o bje cts
cou ld cause the passenger front airbag
to be t urned on when it sho uld be off, or
cou ld cause t he airbag to work in a way
that is different from the way it wou ld
have worked without the object on the
seat.
- Make sure that the PASSENGER AIR BAG
OFF light comes on and stays on all the
t ime whenever the ignition is switc hed
on.
Advanced Airbag System components
The front passenger seat in your vehicle has a
lot of very important parts of the Advanced
Airbag System in it. These parts include t he
ca pac itive passenger de t ect ion syst em, wir-
ing, bracke t s, and more . The cont ro l uni t
monitors the system on the front passenger
seat when the ign ition is switched on and
turns the airbag indicator light on when a
malfunct ion in t he one of t he system compo-
nents is detected ¢ page 162 . Because the
fro nt passenge r seat contains important parts
of the Advanced Airbag System, you must
take care to prevent it from bei ng damaged.
Damage t o t he seat may preven t the Ad-
vanced Airbag System for the front passenger
seat from doing its job in a crash .
The front Advanced Airbag System
consists of the following:
- Crash sensors in t he front of the veh icle tha t
measure vehicle acceleration/dece le ration
to provide information to the Advanced Air-
bag System about the severity of the crash.
A irbag sys tem
157
- An elect ron ic contro l unit, with integrated
crash sensors fo r front and side impacts .
The control un it "decides" whether to f ire
the front a irbag s based on the informat ion
received from the crash sensors. The control
unit also "decides" whether the safety belt
prete ns ione rs should be act ivat ed .
- An Advanced Airbag wit h gas generator and
cont rol valve for the driver ins ide the steer -
ing wheel hub.
- An Advanced Airbag with gas generator and
cont rol valve inside the instrument pa nel for
the front passenger .
- A capacit ive passenger detection system un-
de rneath the front passenger seat cover .
This system measu res the e lect rical capac i-
t ance of t he perso n in the seat. The informa -
t ion regis t ered is se nt cont inuo usly t o t he
elec t ronic con t rol un it to regu late dep loy-
ment of the front Advanced Airbag on the
passenger side.
-An airbag monitoring system an d indicator
light in the instr ument cluster ¢ page 161.
- A senso r in each front seat registers the d is-
tance between the respective seat a nd the
steering whee l or instrument panel. The in-
formation registered is sent cont inuo usly to
the electron ic contro l unit to regulate de-
ployment of the front Adva need Airbags .
- The PASSENGER AIR BAG OFF light comes
on and stays on in the center of the instr u-
ment panel ¢ page 162, fig . 164 and tells
you whe n the front Advanced Airbag on the
passenger side has been tu rned off.
- A senso r in t he safety belt latch fo r the d riv-
er and fo r the front seat passenger that
senses whethe r t hat safety belt is latched or
no t and tra nsmi t s this informa t ion to the
elec t ronic con t rol un it.
A
WARNING
Damage to t he fron t passenger se at can
prevent the front air bag from work ing
properly.
- Imp roper repai r or disassembly of the
front passenge r and dr iver seat will pre-
vent the Advanced Airbag System from
functioning properly.
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