Technical Service Bulletin 121599 — 1999 BMW E39
ELECTRICAL SYSTEM:IGNITION:MODULE
Bulletin Details
| TSB ID | 121599 |
| Manufacturer | |
| Vehicle | 1999 BMW E39 |
| Component | ELECTRICAL SYSTEM:IGNITION:MODULE |
| Communication Date |
Bulletin Summary
VOLUNTARY EMISSIONS RECALL 00E-AO1 - FAULT ACCESS / O2 READINESS CODES. BMW HAS DETERMINED THAT DUE TO AN ENGINE CONTROL MODULE SOFTWARE ERROR, A COMMUNICATION CONFLICT EXISTS BETWEEN THE ENGINE CONTROL MODULE AND THE TRANSMISSION CONTROL MODULE. THIS MAY LEAD TO DIFFICULTIES OR PREVENT COMMUNICATION AND DATA TRANSMISSION BETWEEN THE ENGINE CONTROL MODULE AND AN OFF-BOARD SCAN TOOL. SUCH A SCAN TOOL MAY BE USED DURING AN OFFICIAL VEHICLE INSPECTION, SMOG CHECK, OR AN ENGINE REPAIR; AND / OR THE OXYGEN SENSOR READINESS CODE MAY NOT SET ON AFFECTED VEHICLES. *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.