Service bulletin B120120
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 | 10171481 |
| Published by NHTSA | 2020-02-18 |
| Manufacturer's number | B120120 |
| Manufacturer's date | 2020-01-01 |
| NHTSA component | ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER |
NHTSA's summary
FAULTS FOR TURBOCHARGER ELECTRIC WASTEGATE STORED IN THE DME. The engine malfunction warning (MIL) is illuminated and one of the following fault codes is stored in the DME. 123518 - electrical wastegate valve 2 wastegate valve: stiff movement And/or 120408 - charging pressure control: Switch-off as a secondary reaction CAUSE The DME has an adaptation error when calculating the setpoint values of the two electric wastegates.
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, Turbocharger or supercharger
| BMW X3 | 2020 |
|---|---|
| BMW X4 | 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.