Service bulletins for the 2018 BMW 540i
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
286 on file from NHTSA, as of 2026-10-19.
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Only bulletins with type: Warranty extension are shown. Show all
| B720125 | 2025-11-03. Warranty extension. AIR BAGS; ELECTRICAL SYSTEM. A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in the seat and move the seat to a slightly different position. The POL (Passenger Occupancy Light) light should now function correctly. In some cases, the Air bag Warning Light was illuminated, and the following Advanced Crash Safety Module (ACSM) fault is stored: 930A1C - Front passenger seat occupancy detection transmitting fault (moisture) |
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| B720125 | 2025-04-18. Warranty extension. ELECTRICAL SYSTEM; AIR BAGS. The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been extended to 10 years / 120,000 miles as determined from the vehicle's original in-service / first delivery date. |
| B010324 | 2024-05-31. Warranty extension. ENGINE. EVAP SYSTEM PURGE (VENT) VALVE EXT LTD WTY (ELW) 15/150 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.