Checking the Antenna Wire:

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. 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 VOLKSWAGEN GROUP OF AMERICA, INC.

-1- System RG 174 = blue
-2- System RTK 031 = gray

The positioners on the heads of the tools are color coded on both systems.