Home › Service bulletins › SIB 52 07 21
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.
BMW service bulletin · NHTSA ID 10194302 · Apr 2021 · also written SI B52 07 21, B520721
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.
ROUTING OF DRIVER'S SEAT WIRING HARNESS: The seat wiring harness on the left front area of the driver's seat of the affected vehicles may have been routed incorrectly.
Details
| Bulletin number | SIB 52 07 21 Also written: SI B52 07 21, B520721, 52 07 21, SIB-52-07-21, SI B520721 |
|---|---|
| NHTSA ID | 10194302 |
| Document IDs filed | B520721 |
| Type | Service bulletin |
| Date | |
| Models | Z4 |
| Model years | 2019–2021 |
| Chassis | G29 |
| Engines | B46/B48, B58 |
| Component (NHTSA) | Electrical System › Wiring 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.
More for these cars
Related bulletins
- SIB 65 20 21 Central information display Central information display on BMW G05/G06/G07/G20 and other models (2019–2024); BMW shared service information. Service bulletin · Feb 2023
- SIB 11 03 21 Engine service information Engine service information on B58 engines (2012–2021); BMW explains the cause and the approved repair. Service bulletin · May 2021
- 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. Service bulletin · Jun 2026
- SIB 52 07 20 Seat service information Seat service information on BMW G05/G06/G07/G14 and other models (2019–2021); BMW explains the cause and the approved repair. Service bulletin · Oct 2020
- SIB 52 22 19 Seat noise Seat noise on BMW G29/F39/F48 models (2016–2020); BMW gives an adjustment procedure. Service bulletin · Dec 2019
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.