WARNING: This page is about a different car, the 2024 Audi S5, 2024 Audi RS 5, 2023 Audi S5, and 2023 Audi RS 5. However, it is still accessible from the selected car via links, so may be relevant.
-- Check the torque converter hub -arrow- for wear grooves.
Fig 1: Checking Torque Converter
Courtesy of AUDI
The torque converter must be replaced if it is damaged or faulty.