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June 10, 2020 Service bulletin

Transmission control module (TCM) software designed and certified for a similar model/model year was used...

Audi technical service bulletin Circular37K8REV1 for 2015 Audi A3, 2013 Audi S4 and 2013 Audi S5 and others.

Bulletin number
Circular37K8REV1
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Transmission control module (TCM) software designed and certified for a similar model/model year was used in vehicles affected by this action. It is undetermined whether there could be an impact to emissions. Updated claiming and parts information to add subframe crossbrace fasteners.

Owners of these vehicles have filed 29 complaints in the transmission category.

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