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SIB 52 04 21: Outer headrest second row
Outer headrest second row on BMW G05/G07 models (2019–2021); unsold cars were held for inspection and repair before delivery.
BMW service bulletin · NHTSA ID 10188946 · Feb 2021 · also written SI B52 04 21, B520421
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.
OUTER HEADREST SECOND ROW: BMW AG has issued a Delivery Stop on certain Model Year 2021 BMW X5 SAV and X7 SAV vehicles that were produced between February 8, 2021 and February 17, 2021.
Details
| Bulletin number | SIB 52 04 21 Also written: SI B52 04 21, B520421, 52 04 21, SIB-52-04-21, SI B520421 |
|---|---|
| NHTSA ID | 10188946 |
| Document IDs filed | B520421 |
| Type | Service bulletin |
| Date | |
| Models | X5, X7 |
| Model years | 2019–2021 |
| Chassis | G05, G07 |
| Engines | B58, N63 |
| 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 52 19 23 Seat service information Seat service information on BMW G07 models (2022–2026); BMW explains the cause and the approved repair. Service bulletin · May 2026
- SIB 52 01 26 Seat service information Seat service information on BMW G05/G07 models (2024–2026); BMW explains the cause and the approved repair. Service bulletin · Mar 2026
- SIB 52 09 20 Seat noise Seat noise on BMW G07/G11/G12 models (2019–2024); BMW explains the cause and the approved repair. Service bulletin · Aug 2025
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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.