My Keyless Entry has quit working. I have tried new batteries and synchronization process listed in owner's manual to no avail. Any suggestions?

If you choose to buy a new keyless entry, don't use USKeyless. They are HORRIBLE! I ordered from them . They didn't even ship the part for over a month after purchase despite numerous calls/emails. They were eager to respond until they got paid, then NOTHING. They won't answer phone or return e-mails. Their installation instructions are the worst I have ever seen. It says something like "Choose the brown wire" when there is over 100 brown wires. They are NEVER available for assistance even though they claim assistance available (and website says avail even on the weekends for assistance). Now it has been 3 months, my car still has the floorboard tore up awaiting a PROMISED e-mail with pictures, but nothing. I have asked for a refund, but they won't respond. STAY AWAY from USKeyless!

Thanks for the heads up. Is this an aftermarket keyless entry system or a replacement key that you are trying to install?