I have a 2005 Prius. The remote keyless entry just stopped working for locking and unlocking the doors. I replaced the battery and it didn't affect it's performance. The key will still start the car without inserting it into the dashboard. It feels like the unlock portion of the remote is "stiff" and does not depress. It is toyota model number B31EG. Any suggestions? Thanks in advance.
Carefully take the fob apart and see if the buttons are stuck. There is a thread about this here on PC. Try using the search function.
I agree, it sounds like a mechnical problem within the fob. This also happens with garage door openers.