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SIB 52 01 20: Seat noise
Seat noise on BMW G29/G42/U10/F39 and other models (2018–2024); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 11034458 · Jun 2026 · also written SI B52 01 20, B520120
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.
When getting in or out of the vehicle, a groaning noise can be heard from the opening (aperture) in the seat backrest. The noise may be heard from one or both of the front seats.
Details
| Bulletin number | SIB 52 01 20 Also written: SI B52 01 20, B520120, 52 01 20, SIB-52-01-20, SI B520120 |
|---|---|
| NHTSA ID | 10171492, 11034458 (revisions) |
| Document IDs filed | B520120 |
| Type | Service bulletin |
| Date | (first filed Jan 2020) |
| Models | 230i, M2, X2, Z4, Z4 M40i |
| Model years | 2018–2024 |
| Chassis | G29, G42, U10, F39, F87 |
| Engines | B46/B48, B58, S55 |
| Component (NHTSA) | Seats |
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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- SIB 11 03 21 Oil filter service information Oil filter service information on B58 engines (2012–2021); BMW explains the cause and the approved repair. Service bulletin · May 2021
- SIB 52 04 25 Seat fault codes Seat fault codes on BMW U10 models (2024–2025); BMW gives an inspection and repair procedure. Service bulletin · Mar 2025
- SIB 52 12 25 Seat noise Seat noise on BMW U10/U11 models (2024–2026); BMW explains the cause and the approved repair. Service bulletin · Sep 2025
- SIB 52 02 24 Seat warning message Seat warning message on BMW G60/G70/F39/I20 and other models (2022–2024); BMW gives an inspection and repair procedure. Service bulletin · Aug 2024
- SIB 52 07 21 Routing of driver's seat wiring harness Routing of driver's seat wiring harness on BMW G29 models (2019–2021); BMW explains the cause and the approved repair. Service bulletin · Apr 2021
Before you pay: check your VIN for recalls
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.