NHTSA Complaint #11583188 — 2012 NISSAN MURANO

I purchased 2012 Nissan Murano in Jul 2012. Recently the Airbag light is on and keeps flashing when start the car. It happened since 6 months ago. I sent my car to the local Nissan Dealer, they charged me $149 diagnostic fee + $1500 to replace the Airbag DIAG unit under the center console. After the replacement, the airbag light is still on and flashing. My car cannot pass the annual inspection because of the airbag light. It's a big safety concern. The dealer told me I need to get the passenger seat bottom sensor replaced, the pars has been discontinued. I am very surprised the airbag is related safety issue, Why Nissan discontinued the parts? And I google this issue, many Nissan car owners have the same airbag light issue. This is the most common issue and related to the customer safety. Nissan should recall it. I paid more than $1500 dollar, cannot get my problem fixed. It's unacceptable!