clank

radio working fine, shut vehicle off, then started again and radio display on, but no volume? 2009 cayenne turbo.

Rvca3112

In the same boat. I drove mine and it was fine. Stopped the truck and drove it a hour later... now it’s in German and the touch screen is unresponsive. For a referendum unit from Porsche is 2k. I’m going aftermarket with mine now.

Andy E.

There is an alternative to repairing your PCM but you'll have to ship to the UK:
https://www.pcmrepairs.co.uk/

Dilberto

For US, there is always Becker Autosound.... PCM official repair center.