steering wheel control and acura tl

Hey guys, hoping I can get some help here. Tried searching and came up with nothing. I've got a 2003 Acura TL (Type S) with a Kenwood DNX8120. I've also installed PAS SWI-JACK. There are three buttons on the steering wheel, volume up and down along with a channel button (from the factory it changes the radio preset/skips to the next track for cd). The trouble I'm having is that when I first start the car all the buttons work. After driving for a while, 15 mns or so, only the volume up button works, the other two will no respond. I've ensured I have a solid connection from the adapter to the stereo and ensured it is programmed correctly (since it works when I first start the car. Any help will be greatly appreciated.

My guess? Defective PAC unit... It CAN happen. Suggest you call PAC technical support. Not trying to shirk the responsibility of answering (since I have jumped in, here...) but it sounds like a manufacturer issue. Here's the support page... Good luck! I hope you can find your solution.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."