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SIB 01 05 25: Coolant expansion tank warranty extension
Coolant expansion tank warranty extension on B46/B48 engines (2017–2020); BMW extended the warranty on this part for eligible cars.
BMW warranty extension · NHTSA ID 11018561 · May 2025 · also written SI B01 05 25, B010525
What it covers
A warranty extension means BMW will repair the listed part at no cost on eligible cars within the stated age and mileage. Check eligibility for your VIN with a BMW center before paying for this repair.
The high-temperature (HT) coolant expansion tanks breathing line/pipe limited warranty for defects in materials and / workmanship has been extended to 10 years / 120,000 miles as determined from the original first in-service / delivery date.
Details
| Bulletin number | SIB 01 05 25 Also written: SI B01 05 25, B010525, 01 05 25, SIB-01-05-25, SI B010525 |
|---|---|
| NHTSA ID | 11018561 |
| Document IDs filed | B010525 |
| Type | Warranty extension |
| Date | |
| Models | 530e, 530i, 740e |
| Model years | 2017–2020 |
| Chassis | G12, G30 |
| Engines | B46/B48 |
| Component (NHTSA) | 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.
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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.