WARNING: This page is about a different car, the 2022 Audi Q5 e and 2021 Audi Q5 e. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
Turbo System Tester Kit :VAG1687
Ultrasonic Tester :VAG1842S
Engine Bung Set :VAS6122
Fig 1: Engine Bung Set Charge Air System, Checking For Leaks