catamount

2011 Cayman S with PCM 3.0 with Nav and Bose. Earlier this year the battery was replaced. Ever since then I've had the strangest behavior from the PCM. It will often turn on to the previous radio station or aux input then within a few seconds change to some other input that I cannot determine. What's so 'nice' about this is that it is often gangsta rap which just isn't my cup of tea.

I've searched the manuals and cannot find anything about what might be happening here. I've resaved my seat selections with the same key multiple times hoping that would also save the PCM input but alas that doesn't work.

So, does anyone have any ideas here?

Joe Henley

Bad replacement battery?

TMc993

+1 Since it began with the installation of a different battery, I'd be looking in that direction...Test the battery, check cable connections, appropriate fuses/relays if any, etc.

catamount

Mystery solved. The "Traffic Programming" setting was switched to on with the battery change. Interestingly, the PCM manual says to select/unselect "Traffic Prog" settings but that isn't what the setting is shown as in PCM 3.0. It's shown as "TP", at least on my car.