Howdy,
1995 Explorer XLT with keyless entry door keypad bought used without any fobs. Research indicated that since I have the keypad on the door, then the factory also supplied keyless entry remotes. I picked one up on eBay that claims it is a working specimen: Transmitter 1, FCC ID: GQ43VT4T, DOC: 1470 K763, TRW Inc 3165189. It's a three button (lock, unlock, panic) labeled "driver door only".
I replaced the two batteries in the remote. I've cycled the ignition switch 5 times with either OFF->ON or OFF->ACC (get the "entering programming mode" lock/unlock) and then pushed any combination of buttons on the remote, but I get no confirmatory lock/unlock from the vehicle.
Can someone help me with diagnosis? I think it's most likely the fob, but before I go back to the seller, I'd like to have some evidence or diagnostic logic that points the blame away from the vehicle electronics.
Anything procedural-wise I'm doing wrong?
Thanks for your help,
Robert