I recently bought an avic-n2 as an open box item at a retail store, and did the bypass on it myself. Then I hooked it up and it worked great in my car (04 Honda Civic) for about 3 weeks. Next thing I knew I had to be closer and closer to the car for the remote lock to open. After that, the display showed jibberish on screen (when closed only.. the main display was fine.) I then disconnected everything and checked all my wiring, which seemed to be ok, and reconnected everything. After that, NOTHING worked.
My car locks only worked when the car was running, along with my dome lights n
