Recently, airbag warning signal was activated on my Peugeot 307SW car (brough new 4 years ago). The shop person told me this problem was from the driver-wheel airbag, replacement cost about HK$5000 (approx. Euro $400).

Anybody has this problem before? l wanna know this is the real problem before decide to spend the money to replace the faulty part. Another question, if l leave as is, not replacing the airbag, will other remaining airbags (front passenger and sides) function as they should be in an accident?

In consider airbag is a passive part of a car, does it recieve extra warranty period, just like the anti-corrison warranty which normally good for 10 years.
p.s. the left-right turn signal control assembly (in forward of the turning wheel) has been replaced 6 months ago.

The fault is usually caused by the indicator control stalk ( com 2000) Its rare that ur airbag itself is faulty , Its difficult to give u a price on these as there is many variations to them , The com 2000 is now covered under a 4 year warranty as they were not very reliable You should phone a peugeot dealer with chassis details at hand they should let u know if its covered If u have had that part replace 6 months ago it will be covered under a parts warranty claim . If u do not get the airbag fault fixed it will render ur full system inop , no airbag will deploy in an event of an accident .