Five problems related to warning light on have been reported for the 2008 BMW 328. The most recently reported issues are listed below.
The car's airbag failure warning light, and seat belt warning light started going off whenever someone sits in the passenger seat, indicating that there is no airbag/passenger seat belt function in the car. Dealer has diagnosed the problem as a failed passenger seat sensor mat and indicates that this is a common problem. Cars up until the 2007 model year have been recalled to fix the problem, but BMW has yet to extend the recall to the 2008 model year. BMW still has not issued a recall, and I would like NHTSA to perform an investigation as this looks like the same problem as NHTSA campaign 13v-564. The lights come on whether stationary or in motion, whether a passenger is in the seat or the seat is empty.
The contact owns a 2008 BMW 328i. While driving 50 mph, the air bag warning light illuminated. The contact thought that it was illuminated because she placed groceries in the passenger seat. When the groceries were removed, the light remained illuminated. The vehicle was not taken to a dealer. The manufacturer was not made aware of the failure. The failure mileage was 65,000.
Seat belt and air bag warning lights go on when there's no one sitting in the passenger seat. Was told this is likely a seat sensor issue. I have the sport package and have read that many people have the seat sensor issue with sport seats. Also there has been a recall for almost every year model for the BMW 3-series up to 2007 for seat sensor recall. The light is on constantly now when the car is turned on, whether it is driving or stationary. The lights used to go intermittently on or off but now they are staying on. This makes questionable whether the seat belts are working or if the air bags will deploy.
The car's airbag failure warning light started going off whenever someone sits in the passenger seat, indicating that there is no airbag function in the car. Dealer has diagnosed the problem as a failed passenger seat sensor mat and indicates that this is a common problem. Cars up until the 2007 model year have been recalled to fix the problem, but BMW has yet to extend the recall to the 2008 model year. It appears that e91 models (my car) have the same sensor mat part as the recalled models, but BMW has not acknowledged that the problem is the actual part and not the "model year".
Passenger side seat occupancy malfunction. Faulty seat occupancy detector mat. Warning light stays on when a passenger sits in seat. Light says "passenger air bag off". That means it is set for a child.