# Emissions B120326

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: Emissions
- NHTSA id: 11030305
- Published by NHTSA: 2026\-03\-30
- Manufacturer's number: B120326
- Manufacturer's date: 2026\-03\-19
- Campaign id or software version: 0099020300
- NHTSA component: UNKNOWN OR OTHER; ENGINE

## NHTSA's summary

PROGRAM CONTROL UNITS \(OBD\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030305-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030305-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2025 BMW 230I
- 2025 BMW 530I
- 2025 BMW 740I
- 2025 BMW M5
- 2025 BMW M5 SPORTSWAGON
- 2025 BMW X1
- 2025 BMW X2
- 2025 BMW X3
- 2025 BMW X6
- 2025 BMW X7
- 2025 BMW XM

## Other bulletins for the same vehicles and component

- [B110326](/bulletins/11036376.md), 2026-08-26, Service bulletin: ENGINE. This Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool P/N 81 29 2 208 034 and the S68T / XB1T Kit P/N 83 30 5 BAD 3D5. Refer to SI B04 12 11 for existing documentation about the carbon blaster tool and SI B04 02 26 for the S68T /XB1T tool kit.
- [B010324](/bulletins/11035497.md), 2026-08-03, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B063926](/bulletins/11035476.md), 2026-08-03, Other: ENGINE. Starter Generator Return
- [B170126](/bulletins/11035398.md), 2026-07-31, Service campaign: ENGINE. The coolant vent lines of the low\-temperature circuit are designed to remove air bubbles from the system toensure optimal cooling performance. Internal quality inspections have revealed that leaks may occur due tolocalized material aging on the vent lines. These leaks occur because the material originally used is notsufficiently resistant to the continuously high temperatures. A coolant leak may result and cause a yellow check control message and reduced engine performance.
- [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.
- [B110326](/bulletins/11035392.md), 2026-07-31, Service bulletin: ENGINE. This Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool
- [B120626DCS](/bulletins/11033153.md), 2026-06-02, Other: ENGINE. Update \- Variable Valve Timing
- [B120626](/bulletins/11033035.md), 2026-06-01, Service campaign: ENGINE. DELIVERY STOP: VARIABLE VALVE TIMING
- [B010126](/bulletins/11032729.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [InVeh\-InApp\-Comm](/bulletins/11030318.md), 2026-03-30, Over\-the\-air update: ENGINE. It was determined that the oil return line for the turbo charger was installed with a bolt of the wrong size. The bolt for the oil return line needs to be replaced.

JSON: [/v1/bulletins/11030305](/v1/bulletins/11030305)

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