We had a lot of problems with are jacks too. Had up to dealer three times, and they never fixed the problem. The problem is the 50Amp auto-reset breaker. At first the switches stop working, but remote would, then the both stop working.
Last time at the dealer the replaced the entire module, work fine at dealer, took it home, got about half way up and quit. I found by disconnect power to the module, it would work for a while.
I replaced the 50Amp auto-reset breaker with manual 100Amp Car Stereo Breaker. Haven't had any more problems since.
http://cgi.ebay.com/100A-CIRCUIT-BRE...item4aa7a25c21