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SIB 51 17 21: Tailgate humming noise
Tailgate humming noise on BMW G05/G07 models (2019–2021); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10201143 · Jul 2021 · also written SI B51 17 21, B511721
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.
The tailgate will not completely open and will not close completely. In most cases, the tailgate will release and open only a short distance before stopping. In some situations, a humming noise can be heard, but no activation can be seen.
Details
| Bulletin number | SIB 51 17 21 Also written: SI B51 17 21, B511721, 51 17 21, SIB-51-17-21, SI B511721 |
|---|---|
| NHTSA ID | 10201143 |
| Document IDs filed | B511721 |
| Type | Service bulletin |
| Date | |
| Models | X5, X7 |
| Model years | 2019–2021 |
| Chassis | G05, G07 |
| Engines | B58, N63 |
| Component (NHTSA) | 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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Related bulletins
- SIB 51 46 16 Tailgate squeak Tailgate squeak on BMW G01/G02/G05/G06 and other models (2013–2024); BMW explains the cause and the approved repair. Service bulletin · Feb 2025
- SIB 51 04 24 Tailgate service information Tailgate service information on BMW G05/G07 models (2023–2025); BMW explains the cause and the approved repair. Service bulletin · Aug 2025
- SIB 51 02 22 Tailgate fault codes Tailgate fault codes on BMW G05/G07/G11/G12 models (2019–2023); BMW explains the cause and the approved repair. Service bulletin · May 2023
- SIB 51 06 19 Equipment cracking Equipment cracking on BMW G07 models (2019); the fix is replacing the affected part. Service bulletin · Apr 2019
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Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.
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.