Audi A4 2016–2021 — technical service bulletin
Bulletin A3423652070167_2 · NHTSA communication 10245620 · issued Nov 16, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2021
model years
29
vehicle entries
Official summary
This bulletin provides information for when the cooling oil valve fails basic settings after repair; DTC P1A5B00.
Vehicles covered
- 2017 Audi A4
- 2018 Audi A4
- 2019 Audi A4
- 2020 Audi A4
- 2021 Audi A4
- 2020 Audi A4 Allroad
- 2021 Audi A4 Allroad
- 2018 Audi A5
- 2019 Audi A5
- 2020 Audi A5
- 2021 Audi A5
- 2018 Audi A5 Cabriolet
- 2019 Audi A5 Cabriolet
- 2020 Audi A5 Cabriolet
- 2021 Audi A5 Cabriolet
- 2016 Audi A6
- 2017 Audi A6
- 2018 Audi A6
- 2019 Audi A6
- 2020 Audi A6
- 2019 Audi A7
- 2020 Audi A7
- 2021 Audi A7
- 2018 Audi Q5
- 2019 Audi Q5
- 2020 Audi Q5
- 2021 Audi Q5
- 2020 Audi Q5 PHEV
- 2021 Audi Q5 PHEV
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.