Hi,

I have a Golf 2012 TDI 2.0. I bought it to a family member 6-7 months ago and I know for a fact that they have the RC330 radio since 4-5 years ago, and worked fine.

A month ago I went to the mechanic for an oil change, filters, etc. Because I was going on a long trip. On the trip something weird happened, the radio went off while driving, and I had to press the on button to start it again.

This has happened since then a few more times while driving, and sometimes after that, the buttons on the steering wheel (volume, etc.) stop working. Sometimes the radios seems to not power off when taking the key off, and I have to manually press the off button on the radio, but I'm not sure it completely turns it off.

Fast forward to today, after 6-7 days of not driving, battery is dead. Battery that has 8 months old, it's not normal wear of the battery.

What could be the issue?