Tl* the contact owns a 2013 bmw z4. the contact stated that the air bag warning indicator and "passenger side seat belt not on" indicator illuminated. when the passenger exited the vehicle, the indicators dimmed. the contact also stated that the air bag warning indicator illuminated two other times. the dealer diagnosed that the map sensor needed replacement. the vehicle was not repaired. the manufacturer was not notified of the failure. the vin was invalid. the approximate failure mileage was 70,000.