NHTSA (USA)Critical
1999 BMW Z3NHTSA Campaign #99V272000
The official notice
Defect
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE REAR AXLE DIFFERENTIAL MAY CONTAIN RING GEAR BOLTS THAT WERE INCORRECTLY TORQUED DURING ASSEMBLY. THE BOLT OR BOLTS COULD LOOSEN LEADING TO NOISE FROM THE DIFFERENTIAL.
Safety Risk
THE BOLT OR BOLTS COULD LOOSEN LEADING TO NOISE FROM THE DIFFERENTIAL AND IF A BOLT WERE TO COMPLETELY WORK LOOSE FROM ITS MOUNT, LOCKUP OF THE REAR AXLE COULD OCCUR.
Remedy
DEALERS WILL INSPECT THE VEHICLE'S DIFFERENTIAL AND IF INVOLVED, WILL REPLACE IT.
Updated June 10, 2026