Audi Q4 E-Tron 2024 — service campaign
Bulletin Circular 93OE · NHTSA communication 11021432 · issued Jul 2, 2025
Service campaign
communication type
Unknown / Other
component
2024
model years
2
vehicle entries
Official summary
Audi is providing a software update to help improve the performance of the Onboard Charger with Integrated DC/DC-Converter (OCDC).
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.