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SIB 51 23 17: Humming noise
Humming noise on B46/B48 engines (2016–2018); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10138396 · Apr 2018 · also written SI B51 23 17, B512317
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
HUMMING NOISE DURING SMOOTH ACCELERATION: A humming, vibration noise is heard during smooth acceleration to 2000 rpm.
Details
| Bulletin number | SIB 51 23 17 Also written: SI B51 23 17, B512317, 51 23 17, SIB-51-23-17, SI B512317 |
|---|---|
| NHTSA ID | 10138396 |
| Document IDs filed | B512317 |
| Type | Service bulletin |
| Date | |
| Models | X1, X1 SAV |
| Model years | 2016–2018 |
| Chassis | F48 |
| Engines | B46/B48 |
| Component (NHTSA) | Engine Structure › Body › Tailgate |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.