Audi TT Coupe 2009 Owner's Manual page 154

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WA RNING (continued )
• Always make sure that the side airbag can inflate without inter-
fe rence:
- Never install seat covers or replacement upholstery over the
front seatback s that have not been specifically approved by
Audi.
- Never use additional seat cushions that cover the areas
where the side airbags inflate .
- Damage to the original seat covers or to the seam
in
the area
of the side airbag module must always be repaired immedi -
ately by an authorized Audi dealer.
• The airbag system can be activated only once. After an airbag
has inflated , it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment necessary.
• The airbag system can be deployed only once. After an airbag
has been deployed , it must be replaced with new repla cement
parts designed and approved especially for your Audi model
version . Replacement of complete airbag systems or airbag
components must be performed by qualified workshops only.
Make sure that any airbag service action is entered in your Audi
Warranty & Maintenance booklet under AIRBAG REPLACEMENT
RECORD .
• For safety reasons in severe accidents , the alternator and
starter are separated from the vehicle battery with a pyrotechn ic
circuit interrupter.
- Work on the pyrotechni c circuit interrupter must only be
performed by a qualified dealer - risk of an accident!
- If the vehicle or the circuit inte rrupter is scrapped , all appli -
cable safety precautions must be followed. •
Other things that can affect Advanced Airbag
performance
Changing the vehic le's suspens ion system can change the way that
th e Adva nced Air bag Syste m pe rf orms i n a crash. For example,
using tire -ri m co m binations not approved by Audi, lowering the
veh icle, chang i ng the st iff ness of t he suspe nsio n, incl udi ng th e
spr ings, suspension struts, shock absorbers etc. can change the
f orces t hat are m easured by the ai rba g se nsors and se nt to th e elec -
tronic control unit. Some suspension changes can, for example,
i ncrease the fo rce level s meas u red by th e senso rs and make th e
airbag system dep loy in crashes in which it wou ld not d ep loy if the
changes had no t been m ade. Oth er ki nds of changes m ay red uce
th e force levels measured by t he sensors and preve nt the airbag
fro m de p loying w hen it sh ou ld .
Th e senso rs in t he saf ety belt buc kle fo r th e dr iver and fro nt
passenger seat te ll the electronic contro l modu le if the safety belt is
lat ched or not. If th e saf ety belt is b eing used, th e front airbag wi ll
deploy at a slightly higher rate of vehic le dece leration than if the
saf et y be lt is not bein g used. Theref ore, i n a partic ula r coll isio n, it is
possible that an airbag wi ll not deploy at a seating position where
th e saf ety be lt is bei ng us ed bu t wi ll infl at e at the po sition w here th e
safety be lt is not being used. It is important that nothi ng interfere
with the safety belt buc kles so that the sensors can send the co rrect
i nformatio n about safety belt use to t he electronic control unit.
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WARNING
Changing the vehicle's suspension including use of unapproved
tire -rim combinations can change Advanced Airbag performance
and increase the risk of serious personal injury in a crash.
• Never install suspension components that do not have the
same performance characteristics as the components originally
installed on your vehicle.
• Never use tire -rim combinations that have not been approved
by Audi. ..