davidh2o

I have a similar issue. My car came with 2 KARR FCC ID ELVAT5H key fobs. The arm/dis button wore out on one, so I purchased a replacement, but can't program it. I followed the process in the manual (same as wirelessenabled) successfully getting into the program mode (one beep) and finished step 5 within 30 sec, but got no double beep indicating that the fob was programmed. The new fob lights when the buttons are pressed, but is not recognized by the car. I tried again to program the working old fob with no double beep to indicate that it was reprogrammed. It still works. I assume that the codes on these fobs all unique? Are certain codes fixed in the system? I don't understand how the old fobs were programmed originally but can't be reprogrammed now.