Service bulletins for the 2017 BMW 320i
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.
276 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Differential are shown. Show all
| B330216 | 2018-12-10. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. Howling Noise from the Rear Differential. When coasting from 85 - 70 mph, there is a howling noise from the rear differential. CAUSE Resonance behavior during the running-in phase of the PHEV rear differential |
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| B330216 | 2018-11-05. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. Howling Noise from the Rear Differential. When coasting from 85 - 70 mph, there is a howling noise from the rear differential. CAUSE Resonance behavior during the running-in phase of the PHEV rear differential. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.