NHTSA recall 17V047000

What's wrong: These vehicles may have had a driver-side air bag module installed as replacement equipment such as after a vehicle crash necessitating replacement of the original air bag, or as a remedy part for a prior recall. These replacement modules contain an air bag inflator that may rupture due to propellant degradation occurring after long-term exposure to lower absolute humidity, temperature and temperature cycling.

Why it matters: In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.

The fix: Owners are advised not to drive their vehicles until the vehicle has been remedied. Bmw will notify owners, and dealers will inspect the driver side air bag module, replacing it as necessary, free of charge. The recall began March 15, 2017.