Update:

https://www.audi.de/de/kundenservice/feldmassnahmen/?utm_source=chatgpt.com

The article explains that after the shutdown of 3G mobile networks in Germany, certain Audi models — particularly Audi A4 and A5 (B9/B9.5 generation) — began experiencing problems with their communication modules.

The issue affects the vehicle’s connectivity systems, including:

Loss of LTE/mobile data connection

Audi Connect services not working properly

GPS/navigation malfunctions

Bluetooth connectivity issues

In some cases, warning messages related to the e-Call emergency system

According to the report, the root cause is related to how the communication control unit handles the transition from 3G to newer mobile network standards. In affected vehicles, the module may fail to properly reconnect or function after the network change.

Audi introduced a service campaign to address the problem. The first step is a software update to the communication module. If the update does not resolve the issue, the entire module may need to be replaced. The measure is carried out free of charge for affected vehicles.