WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Before starting the repair, determine which antenna wire using the gauge.
Fig 1: Before Starting Repair, Determine Which Antenna Wire Using Gauge
Courtesy of AUDI
-1- System RG 174 = blue
-2- System RTK 031 = gray
The positioners on the heads of the tools are color coded on both systems.