[See Re-program Keyless Entry/Security Transmitter for history - page 3]

OK, I have found the emergency override / programming button for my security system, but I still can't re-program my new transmitter. I have held the button in for at least 30 seconds. I have tried with the door open, and the door closed. I don't even get the lock cycle indicating that the system is in programming mode.

Can anyone offer any other options?