Volvo S90 2017–2018 — technical service bulletin
Bulletin TJ32009.2.0 · NHTSA communication 10146456 · issued May 24, 2017
Technical service bulletin
communication type
Equipment
component
2017–2018
model years
4
vehicle entries
Official summary
This is a Technical Journal: A hybrid vehicle in Active Usage Mode uses a small amount of energy from the high voltage battery. Over an extended period of time, this could lower the cell voltages and eventually degrade the battery. Periodically check the high voltage battery state of charge and keep it at or above 25% as per the instructions in the owners manual for "Long-term storage of vehicle with hybrid batteries".
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.