Service bulletin 110308
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 | 10150094 |
| Published by NHTSA | 2018-12-03 |
| Manufacturer's number | 110308 |
| Manufacturer's date | 2013-03-01 |
| NHTSA component | ENGINE |
NHTSA's summary
Crankcase Ventilation System Diagnosis and Measurement. INFORMATION All current BMW engines incorporate a pressure-controlled crankcase ventilation system. The crankcase ventilation systems use various different crankcase ventilation valves, depending on the engine type. Although the valves all look different, they function similarly, using a spring and diaphragm assembly to control the crankcase pressure. A properly functioning pressure control valve is designed to maintain a slight vacuum (underpressure) in the crankcase, which assures reliable crankcase venting during all engine operating conditions. Some of the causes and results of a malfunctioning crankcase ventilation system are listed below.
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 BMW |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.