Audi A3 2016–2020 — technical service bulletin
Bulletin A9121022057052_4 · NHTSA communication 10194377 · issued May 17, 2021
Technical service bulletin
communication type
Equipment
component
2016–2020
model years
34
vehicle entries
Official summary
This bulletin contains instructions for when the MMI shows the message "Read error occurred when accessing the navigation data" after initialization and reboots constantly with DTC B126CF0 and/or B126CF1.
Vehicles covered
- 2016 Audi A3
- 2017 Audi A3
- 2018 Audi A3
- 2019 Audi A3
- 2020 Audi A3
- 2017 Audi A4
- 2018 Audi A4
- 2019 Audi A4
- 2018 Audi A5
- 2019 Audi A5
- 2016 Audi A6
- 2017 Audi A6
- 2018 Audi A6
- 2019 Audi A6
- 2020 Audi A6
- 2016 Audi A7
- 2017 Audi A7
- 2018 Audi A7
- 2019 Audi A7
- 2020 Audi A7
- 2018 Audi Q5
- 2019 Audi Q5
- 2020 Audi Q5
- 2017 Audi Q7
- 2018 Audi Q7
- 2019 Audi Q7
- 2020 Audi Q7
- 2017 Audi R8
- 2018 Audi R8
- 2020 Audi R8
- 2016 Audi TT
- 2017 Audi TT
- 2018 Audi TT
- 2019 Audi TT
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.