Subaru Ascent 2017–2019 — technical service bulletin
Bulletin 15-227-18 · NHTSA communication 10144885 · issued Aug 21, 2018
Technical service bulletin
communication type
Equipment
component
2017–2019
model years
14
vehicle entries
Official summary
This bulletin provides troubleshooting steps to follow when diagnosing customer concerns of the Navigation system?s functionality. Please start by completing the Harman Investigation Guide Questionnaire as it gathers important details which will help with diagnosis and will be required should the condition not be resolved by this troubleshooting. While completing the questionnaire, follow the question flow based on the customer concern. Answer each related question noting the results to each in detail while performing the diagnostics. Review the entire bulletin before beginning in order to und
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.