valet 562t problems

I have this system installed in a 2005 Pontiac Vibe. I haven't ever had any problems with the system until this morning. I can't get the system to lock or unlock my doors or remote start. I still have good battery power in both remotes and have tried them both. My LED status light still blinks like it is working. I don't have any idea what could have happened to make the system quit working. It was fine yesterday all day and then this morning it won't work. Any help or suggestions would be great.

Here are a couple of thoughts: If the vehicle battery voltage is low it can cause various issues. Although it is not typical of the 562T the system antenna could be bad too. There is also the possibility of the remotes going out of sync with the brain, to resolve this hold the lock button on the remote down for 10 seconds. One more thing to try is to disconnect the power supplying the brain for a minute or two. The quickest way to do this is to disconnect the vehicle battery but keep in mind the radio will loose its memory as well (most newer radios only loose the clock).Installer, IT support, and FFL. I need less hobbies.