The 2009 BMW 330XI has 3 recalls, the most serious being two separate airbag inflator defects where the driver's frontal airbag can explode during deployment and send sharp metal fragments into the cabin, risking serious injury or death.
Both airbag concerns involve the driver's side inflator. One affects vehicles that may have had the original steering wheel swapped for a sport or M-sport steering wheel carrying a defective inflator. The other is a broader inflator defect affecting a wide range of 3 Series vehicles from this era. Either way, the consequence is the same: in a crash, the airbag inflator can rupture violently rather than inflate normally. The wiring and electrical connectors for the climate control system can also overheat, melt, and start a fire, even with the car parked and the engine off.