Two problems related to air bag not deploy have been reported for the 2003 BMW Z4. The most recently reported issues are listed below.
Takata recall. 2003 BMW Z4 air bags did not deploy nor did seat belts lock when car hit a tracter trailer who suddenly stopped short on the highway. BMW was moving at approx 80 mph when driver hit breaks upon seeing trailer stop short.
Follow up to NHTSA complaint id 10353056. Received letter from BMW that the airbag replacement warranty for my vehicle serial number was extended to 15 years. Received letter on 7/31/18, with 15 year service date expired on 7/11/18. Letter was worthless, as they waited until the 15 year extension had expired by several weeks before sending the notification. The inability of the passenger airbag to inflate in an accident is a serious safety defect that continues to be ignored for my vehicle as well as others reported to the NHTSA. BMW needs to be held liable for any injuries resulting from an airbag failing to deploy in an accident.