Home › Service bulletins › SIB 12 05 25
SIB 12 05 25: Electrical system corrosion
Electrical system corrosion on BMW G05/G07/G20 models (2024); BMW repairs affected cars free under a service campaign.
BMW service campaign · NHTSA ID 11018723 · May 2025 · also written SI B12 05 25, B120525
What it covers
A service campaign is a fix BMW performs free on affected cars. Ask a BMW center whether it is open on your VIN.
Moisture may enter the start generator supply line and cause corrosion inside the line.
Details
| Bulletin number | SIB 12 05 25 Also written: SI B12 05 25, B120525, 12 05 25, SIB-12-05-25, SI B120525 |
|---|---|
| NHTSA ID | 11018723 |
| Document IDs filed | B120525 |
| Type | Service campaign |
| Date | |
| Models | 330i, X5, X7 |
| Model years | 2024 |
| Chassis | G05, G07, G20 |
| Engines | B46/B48, B58, N63 |
| Component (NHTSA) | Electrical System Engine |
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
G05 repair costs G20 repair costs All B46/B48 bulletins All B58 bulletins All N63 bulletins
Related bulletins
- SIB 17 03 20 Coolant line leak Coolant line leak on BMW G01/G02/G05/G07 and other models (2018–2020); BMW gives an inspection and repair procedure. Service bulletin · May 2020
- SIB 12 06 26 Fault codes software update Fault codes software update on BMW G05/G06 models (2023–2026); BMW released a software update. Service campaign · Jun 2026
- SIB 16 01 24 Engine no-start Engine no-start on BMW G05/G06/G07/G60 and other models (2023–2025); BMW repairs affected cars free under a service campaign. Service campaign · Nov 2025
- SIB 01 16 24 Telematics unit warranty extension Telematics unit warranty extension on BMW G11/G12/G20/G30 and other models (2018–2020); BMW extended the warranty on this part for eligible cars. Warranty extension · Jan 2025
- SIB 61 02 25 Battery failure Battery failure on B58/N63 engines (2024–2025); BMW repairs affected cars free under a service campaign. Service campaign · Apr 2025
- SIB 61 09 24 Transmission warning message Transmission warning message on B58/N63 engines (2023); BMW gives an inspection and repair procedure. Service campaign · May 2024
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.