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RecallGazette

Vehicle problems, recalls & safety intelligence

Audi A4 2019–2021technical service bulletin

Bulletin A5723022058452_4 · NHTSA communication 10233544 · issued Mar 23, 2023

Technical service bulletin
communication type
Visibility
component
2019–2021
model years
37
vehicle entries

Official summary

This bulletin provides information for when the rear window defogger is not operational.

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.