Q: My electric locks stopped working on ALL doors all at once.

Without any signs of something going wrong. ALL my doors stopped locking all at once. When I drive they wont lock automatically. I have 3 Fobs. None work. If I push the PANIC button, my Flashers come on. But No Horn Noise and No Flashing Lights! If I push the LOCK button twice the Horn sounds. But my LIGHT don't flash on either of these uses of the fob. I can manually lock them from inside. And the KEY will open or lock the front doors

My car has 120000 miles.
My car has an automatic transmission.