The keyless entry on our 2004 Prius is acting up. The touch the handle to unlock doors does not unlock the doors anymore. The press unlock button on the key fob works. We recently replaced the key fob battery so I doubt that is the problem. We are the original owner and have owned a 2005 and currently have a 2007 Prius so we are familiar with things on the Prius models. Any suggestions would be helpful.