Technical Service Bulletin 121399 — 1998 BMW E38
ELECTRICAL SYSTEM:WIRING
Bulletin Details
| TSB ID | 121399 |
| Manufacturer | |
| Vehicle | 1998 BMW E38 |
| Component | ELECTRICAL SYSTEM:WIRING |
| Communication Date |
Bulletin Summary
INFORMATION ON THE REWIRING OF THE SECONDARY AIR PUMP CIRCUIT. *TT
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.