Subaru Ascent 2019 — technical service bulletin
Bulletin Subarunet Announ · NHTSA communication 10169830 · issued Dec 4, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019
model years
3
vehicle entries
Official summary
New stop sale/safety recall: WUW-08 Ascent, Forester, and Crosstrek Hybrid PCV valve Recall. The Positive Crankcase Ventilation (PCV) valve may be defective.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.