Audi A4 2018–2019 — technical service bulletin

Bulletin A6421812049956_2 · NHTSA communication 10204730 · issued Dec 7, 2021

Technical service bulletin

communication type

Visibility

component

2018–2019

model years

vehicle entries

Official summary

This bulletin contains a software update to address one or more various malfunctions of the motor for the window regulator with DTCs; B148713, B14874B , B148754 and/or B148701.

Vehicles covered

2018 Audi A4
2019 Audi A4
2018 Audi A5
2019 Audi A5
2018 Audi A5 Cabriolet
2019 Audi A5 Cabriolet
2018 Audi Allroad
2019 Audi Allroad
2018 Audi Q7
2019 Audi Q7
2019 Audi RS 5
2018 Audi S5
2019 Audi S5

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.