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SIB 52 03 21: Seat noise
Seat noise on B58 engines (2020–2021); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10190854 · Mar 2021 · also written SI B52 03 21, B520321
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.
CLICKING NOISE FROM REAR FOOTWELL AREA WHEN MOVING SEAT(S): A clicking noise is heard from the rear footwell area when moving the seat. The clicking noise can occur under either the driver's seat and/or the passenger seat.
Details
| Bulletin number | SIB 52 03 21 Also written: SI B52 03 21, B520321, 52 03 21, SIB-52-03-21, SI B520321 |
|---|---|
| NHTSA ID | 10190854 |
| Document IDs filed | B520321 |
| Type | Service bulletin |
| Date | |
| Models | 840i |
| Model years | 2020–2021 |
| Chassis | G14, G15, G16 |
| Engines | B58 |
| Component (NHTSA) | Back Over Prevention Engine And Engine Cooling |
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.