Audi A4 2017 — technical service bulletin
Bulletin A9023582072005_2 · NHTSA communication 10247138 · issued Dec 4, 2023
Technical service bulletin
communication type
Electrical System
component
2017
model years
2
vehicle entries
Official summary
This bulletin provides information for when the error message "CBR1021E: Can't parse Request. (cpngw)" appears when adapting control units, keys, or immobilizer; DTC B201700.
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.