Service bulletin B110326
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 | Service bulletin |
|---|---|
| NHTSA id | 11036376 |
| Published by NHTSA | 2026-08-26 |
| Manufacturer's number | B110326 |
| Manufacturer's date | 2026-08-12 |
| NHTSA component | ENGINE |
NHTSA's summary
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.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| BMW 740I | 2025 |
|---|---|
| BMW M5 | 2025 |
| BMW M5 SPORTSWAGON | 2025 |
| BMW X5 | 2025 |
| BMW X6 | 2025 |
| BMW X7 | 2025 |
| BMW XM | 2025 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| B063926 | 2026-08-03. Other. Starter Generator Return |
|---|---|
| B170126 | 2026-07-31. Service campaign. 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 | 2026-07-31. Emissions. 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 | 2026-07-31. Service bulletin. This Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool |
| B120626DCS | 2026-06-02. Other. Update - Variable Valve Timing |
| B120626 | 2026-06-01. Service campaign. DELIVERY STOP: VARIABLE VALVE TIMING |
| B120326 | 2026-03-30. Emissions. PROGRAM CONTROL UNITS (OBD) |
| B121125 | 2025-11-25. Service bulletin. One or both of the following faults stored in the DME: 034AA5 - Mixture control bank 1, lambda regulation, mixture too lean 034AA8 - Mixture control bank 1, lambda adaptation, mixture too rich And additionally with the faults above, these affected vehicles may have one or more of the followingirregular combustion-related faults also stored: 033812 033813 033814 033815 033816 033817 033818 033819 |
| B064825 | 2025-10-10. Other. Oil Drain Plug Return |
| B110525 | 2025-09-22. Service campaign. Due to an assembly error the upper oil pan screws may not have been torqued correctly. |