I have a 2007 Mazda3 GT Sport Hatchback that the FOB no longer locks the doors, nor does it start the car horn and flash the lights if pressed a second time. I had a second FOB (Valet) that also does not lock the doors. I replaced both batteries and verified the circuit boards for the Fobs were ok and still no success. I tried re-programming both Fobs and the results were positive (according to the program guides) however afterwards they still do not lock the doors. In addition, locking all 5 doors works fine when using the key manually outside the door or by pushing the lock / unlock button inside the door. I have checked several Mazda sites and still have no answer. I am thinking it's the Keyless Remote Control Module behind the glove compartment but before purchasing one would like confirmation that the module is bad. I have no idea how to test it. Any help with this would be appreciated, thanks