2017-2024 Audi S5 4 Door Safety -> Description of airbag system User Manual
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Safety -> Description of airbag system for Your Audi S5 4 Door Fourth Generation (2017-2024)

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Airbag system  
Airbag system  
• goes out and then comes on again after the ignition is switched  
Description of airbag system  
on,  
• comes on or flickers while the car is moving.  
General notes on airbag system  
The airbag is an integral part of the car's passive safety  
system.  
WARNING  
• The airbags are not a substitute for the seat belts; they are an  
integral part of the car's overall passive safety system. The airbags  
can only offer effective protection if the occupants are wearing  
their seat belts. For this reason it is very important to wear the  
seat belts at all times ⇒ page 160, “Why is it so important to use  
seat belts?”.  
In conjunction with the three-point seat belts, the airbag system  
gives the front occupants additional protection for the head and  
chest in the event of a severe frontal collision.  
In a severe side collision the side airbags and the head-protection  
airbags reduce the risk of injury to the occupants in the areas of the  
body facing the impact ⇒  
.
• The seat belts and airbags can only provide maximum protec-  
tion if the occupants are seated correctly ⇒ page 70, “Seats and  
storage”.  
In addition to their normal function of protecting the occupants in a  
collision, the seat belts also hold them in a position where the  
airbags can inflate properly and provide maximum protection.  
• If you do not wear a seat belt, if you lean forward, or are not  
seated correctly while the vehicle is in motion, you are at greater  
risk of injury should the airbag system be triggered in an accident.  
The airbag system will only work with the ignition on. The airbag  
system is monitored electronically; the airbag warning lamp indi-  
cates whether the system is functioning properly.  
• Components of the airbag system are located in various parts  
of the vehicle. If repairs to other vehicle components make it  
necessary to perform work on the airbag system or to remove or  
install parts of the airbag system, this may cause damage to the  
airbag system. As a result, the airbags may not inflate correctly or  
may not be triggered at all in an accident situation. For this reason,  
you should always have the work carried out by a qualified work-  
shop.  
The main parts of the airbag system are:  
• the electronic monitoring system (control unit and sensors),  
• the two front airbags,  
• the front side airbags and head-protection airbags,  
• The airbag warning lamp in the instrument cluster.  
• If a fault should occur in the airbag system, have the system  
checked immediately by a qualified workshop. Otherwise the  
system may fail to trigger in an accident.  
There is a fault in the airbag system if the warning  
lamp  
• does not come on when the ignition is switched on,  
• Do not attempt to modify components of the airbag system in  
• does not go out about 4 seconds after the ignition is switched  
any way.  
on,  
• Never make any alterations to the front bumper or the body.  
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Airbag system  
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The airbag system is not triggered in minor frontal or side collisions,  
or in rear collisions or if the car overturns. In these situations the  
occupants are protected by wearing the seat belts.  
WARNING (continued)  
• The airbag system can only be activated once; if the airbag has  
been triggered, the system must be replaced. Should the airbag  
system or airbag modules have to be replaced, the qualified work-  
shop carrying out the replacement will document all details in the  
appropriate section of the Service Schedule.  
Factors determining the triggering response  
It is not possible to define the exact triggering response of the  
airbag system in all possible situations, since the circumstances in  
different types of accident will vary considerably. Important factors  
include, for example, the nature (hard or soft) of the object which  
the car hits, the angle of impact, vehicle speed and so on.  
• If you sell the vehicle, please remember to pass on the  
complete Service Wallet to the new owner. If any of the airbags  
have been deactivated, it is important that the new owner is also  
given the relevant documents.  
Whether the airbags are triggered depends primarily on the vehicle  
deceleration rate resulting from the collision. By processing the  
signals from the sensors located in the vehicle, the electronic  
control unit is immediately able to evaluate the severity of the colli-  
sion and activate the restraint systems accordingly. If the decelera-  
tion rate is below the predefined reference value in the control unit  
the airbags will not be triggered, even though the accident may  
cause extensive damage to the car.  
• The relevant safety requirements must be observed when the  
vehicle or components of the airbag or belt tensioner systems are  
scrapped.  
• In an accident in which one or more airbags are triggered the  
alternator and the starter are - for safety reasons - both discon-  
nected from the battery via a pyrotechnic circuit breaker.  
− Any repairs to the pyrotechnic circuit breaker must always  
be performed by a qualified workshop (accident risk).  
Note  
− The relevant safety requirements must be observed when  
The airbag releases a fine dust when it inflates. This is quite normal  
and does not mean there is a fire in the vehicle.  
the vehicle or the circuit breaker are scrapped.  
When are the airbags triggered?  
The airbag system is triggered in collisions with a severe  
impact.  
The airbag system is designed so that the airbags for the driver and  
front passenger are triggered in a severe frontal collision.  
In severe side collisions the side airbags on the impact side of the  
vehicle are triggered together with the head-protection airbag.  
The front airbags, side airbags and one of the head-protection  
airbags may be triggered together in certain types of accident.  
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