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greater detail below. Because the front passen -
ger seat contains important parts of the Ad-
vanced Airbag System, you must take care to pre -
vent it from being damaged. Damage to the seat
may prevent the Advanced Airbag for the front
passenger seat from doing its job in a crash .
The front Advanced Airbag Sys tem con sists
of t he follo wing :
- Crash sensors in the front of the vehicle that
measure vehicle acceleration/decelerat ion to
provide information to the Advanced Airbag
System about the severity of the crash .
- An electronic control unit, with integrated
crash sensors for front and side impacts . The
contro l unit "decides" whethe r to fire the front
airbags based on the information received from
the crash sensors. The control unit also "de -
cides" whether the safety belt pretensioners
shou ld be activated.
- An Advanced Airbag with gas generator and
contro l valve for the driver inside the steering
whee l hub .
- An Advanced Airbag with gas generator and
contro l valve inside the instrument pane l for
the front passenger.
- A weight -sensing mat under the upho lstery
padding of the front passenger seat cushion
that measures the total weight on the seat . The
information registered is sent continuously to
the electron ic control unit to regulate dep loy-
ment of the front Adva need Airbag on the pas-
senger side.
- An airbag monitoring system and indicator
light in the instrument cluster
¢ page 138.
- A sensor in each front seat registers the dis-
tance between the respective seat and the
steering wheel or instrument panel. The infor-
mation reg istered is sent cont inuous ly to the
electronic control unit to regulate deployment
of the fro nt Adv a need Airbags.
- The
PASSENGER AIR BAG OFF
light comes on
and stays on in the center of the instrument
pane l ¢
page 138, fig. 134
and tells you when
the front Advanced Airbag on the passenge r
side has been turned off.
- A sensor below the safety belt latch fo r the
front seat passenger to meas ure the tension on
Airb a g sys tem
the safety belt. The tension on the safety belt
and the weight registered by the weight-sens-
ing mat help the contro l unit "decide" whether
the front airbag for the front passenger seat
should be turned off or not¢
page 129, Child
restraints on the front seat - some important
things to know.
- A sensor in the safety belt latch for the driver
and for the front seat passenger that senses
whether that safety belt is latched or not and
transmits this information to t he electronic
cont rol unit.
_&
WARNING
Damage to t he front passenge r seat can pre-
vent t he front airbag from working properly.
- Imp roper repair or disassembly of t he front
passenger and driver seat will prevent the
Advanced Airbag System from f unctioning
properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
workshop personne l.
- Never remove t he front passenger or driver
seat from the vehicle.
- Never remove t he upholstery from t he front
passenger seat.
- Never disassemble or remove par t s from the
seat or disconnect wires from it.
- Never carry sharp objects in your pocket s or
place them on the seat. If t he weight-sens-
ing mat in the passenger seat is punctu red
it cannot work proper ly.
- Never carry things on your lap or carry ob-
jects on the passenger seat. Such items can
increase the weight reg istered by the
weight-sensing mat and send the wrong in-
formation to the airbag control unit.
- Never store items under the front passenger
seat. Parts of the Advanced Airbag System
under the passenger seat could be dam-
aged, preventing them and the airbag sys-
tem from working proper ly.
- Never place seat covers or replacement up-
holstery that have not been specifically ap-
proved by Audi on the front seats.
- Seat covers can prevent the Advanced Air-
bag System from recognizing child
135
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