Subaru Ascent 2019–2020 — technical service bulletin

Bulletin 15-236-18R · NHTSA communication 10179423 · issued Aug 31, 2020

Technical service bulletin

communication type

Electrical System

component

2019–2020

model years

vehicle entries

Official summary

The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.

Vehicles covered

2019 Subaru Ascent
2020 Subaru Ascent
2019 Subaru BRZ
2020 Subaru BRZ
2019 Subaru Crosstrek
2020 Subaru Crosstrek
2019 Subaru Forester
2020 Subaru Forester
2019 Subaru Impreza
2020 Subaru Impreza
2019 Subaru Legacy
2019 Subaru Outback
2019 Subaru WRX
2020 Subaru WRX

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.