# Other B066\-25

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Other
- NHTSA id: 11025855
- Published by NHTSA: 2025\-12\-01
- Manufacturer's number: B066\-25
- Manufacturer's date: 2025\-11\-20
- NHTSA component: ENGINE

## NHTSA's summary

Expansion Tank Return

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025855-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025855-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2026 BMW 530I
- 2026 BMW 740I
- 2026 BMW X5
- 2026 BMW X6
- 2026 BMW X7
- 2026 BMW XM LABEL
- 2025 ROLLS\-ROYCE CULLINAN
- 2024 ROLLS\-ROYCE GHOST
- 2024 ROLLS\-ROYCE PHANTOM

## Other bulletins for the same vehicles and component

- [B130126](/bulletins/11036551.md), 2026-09-01, Service campaign: ENGINE. Delivery Stop \- Exhaust System Gasket
- [B180126](/bulletins/11036378.md), 2026-08-26, Service campaign: ENGINE. An exhaust gas sealing ring between thelower catalytic converter and upper catalyticconverter may be missing \(1\).
- [B130126](/bulletins/11035397.md), 2026-07-31, Service campaign: ENGINE. Exhaust System Gasket
- [B120326](/bulletins/11035396.md), 2026-07-31, Emissions: ENGINE. Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault memory codes \(DTCs\) and the MIL \(warning light\) are not automaticallydeleted even though the underlying malfunction has already been rectified. This does not comply with the statutory OBD specifications.
- [B120626](/bulletins/11033035.md), 2026-06-01, Service campaign: ENGINE. DELIVERY STOP: VARIABLE VALVE TIMING
- [B062726](/bulletins/11031898.md), 2026-05-01, Other: ENGINE. Expansion Tank Return
- [B110525](/bulletins/11023247.md), 2025-09-22, Service campaign: ENGINE. Due to an assembly error the upper oil pan screws may not have been torqued correctly.

JSON: [/v1/bulletins/11025855](/v1/bulletins/11025855)

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