Audi A8 2018 Owner's Manual page 236

Airb a g syste m
passenger seat contains important parts of the
Advanced Airbag System, you must take care to
prevent 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 System consist s
of the 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 electron ic control un it, with integrated
crash sensors for front and side impacts . The
contro l unit "decides " whether to fire the front
airbags based on the information received from
the crash sensors. The contro l unit also "de -
cides" whether the safety be lt pretensioners
sho uld 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 unde r t he upho lstery
padding of the front passenger seat cushion
that meas ures the tota l weight on the seat . The
information registered is sent continuously to
the e lect ronic control unit to regu late 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
c>
page 23 7 .
- A sensor in each front sea t registers the dis-
tance between the respective seat and the
steering wheel or instrument panel. The infor-
mation reg istered is sent continuously to the
electronic cont rol unit to regulate deployment
of the fro nt Advanced Airbags.
- The PASSENGER AIR BAG OFF light comes on
and stays on in the center of the instr ument
pane l
c>
page 23 7, fig . 232 and tells you when
the front Advanced Airbag on the passenger
side has been turned off.
- A sensor be low the safety belt latch fo r the
front seat passenger to meas ure the tension on
234
the safety be lt. The tension on the safety belt
and the weight registered by the weight -sens-
ing mat he lp the contro l unit "decide" whether
the front airbag for the front passenger seat
should be turned off or not
c>
page 228, 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 informat ion to the e lectronic
cont rol unit.
_&,
WARNING
Damage t o t he front passenge r seat can pre -
vent t he front airbag from work ing prope rly.
- Imp roper repair or disassembly of t he front
passenger and driver seat will prevent the
Advanced Airbag System from functioning
proper ly.
- Repairs to the front passenger seat mus t be
performed by qualified and proper ly trained
workshop personne l.
- Never remove the front passenger or driver
seat from the vehicle.
- Never remove t he upholstery from the front
passenger seat.
- Never d isa ssemble or remove pa rt s from the
seat or disconnect wires from it.
- Never carry sharp objects in your pocke t s or
place them on the seat. If the weight-sens -
ing mat in the passenger seat is punctured
it ca nnot work proper ly.
- Never carry things on your lap or carry ob-
jects on the passenger seat. Such items can
increase t he weight reg istered by the
weight-sensing mat and send the wrong in-
formation to the a irbag control unit.
- Never store items under the front passenger
seat . Parts of the Advanced Airbag System
under the passenger seat cou ld be dam-
aged, preventing them and the airbag sys-
tem from worki ng properly.
- Never place seat covers or replacement up-
holstery that have not been specifically ap-
proved by Aud i on the front seats.
- Seat covers can prevent the Advanced Air-
bag System from recognizi ng ch ild