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SIB 52 11 25: Seat service information
Seat service information on BMW G14/G15/G16 models (2020–2025); BMW released a software update.
BMW service bulletin · NHTSA ID 11022110 · Aug 2025 · also written SI B52 11 25, B521125
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.
If the seat ventilation is deactivated via the switch or due to parking the vehicle, the fans in the seat cushionor under the seat cushion surface are unpleasantly loud. The fans speed up loudly twice and then turn off. The functionality of the fans is not impaired.
Details
| Bulletin number | SIB 52 11 25 Also written: SI B52 11 25, B521125, 52 11 25, SIB-52-11-25, SI B521125 |
|---|---|
| NHTSA ID | 11022110 |
| Document IDs filed | B521125 |
| Type | Service bulletin |
| Date | |
| Models | 840i |
| Model years | 2020–2025 |
| Chassis | G14, G15, G16 |
| Engines | B58 |
| Component (NHTSA) | Electrical System 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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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.