Volvo S90 2016–2019 — technical service bulletin
Bulletin TJ34948.2.0-2020 · NHTSA communication 10171687 · issued Jan 25, 2020
Technical service bulletin
communication type
Equipment
component
2016–2019
model years
15
vehicle entries
Official summary
This is a Technical Journal: IHU, screech noise from sound system when ending phone call.
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.