This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM)....
Subaru technical service bulletin 11-199-20 for 2014-2018 Subaru Forester and 2015-2020 Subaru WRX.
- Bulletin number
- 11-199-20
- Component
- Electrical system
- Summary
- This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). The new logic will address isolated concerns of a hard start condition occurring in cold weather (+10 degrees Fahrenheit or lower) and / or high-altitude areas. When this scenario occurs, the A/F learning control values move toward lean.
Owners of these vehicles have filed 456 complaints in the electrical category.
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