Nissan Altima 2019–2020 — technical service bulletin
Bulletin NTB20-046a · NHTSA communication 10178232 · issued Jul 29, 2020
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
4
vehicle entries
Official summary
VOLUME KNOB DOES NOT FUNCTION PROPERLY This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
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.