I was changing the batteries on the keyfob and the "panic" insert became jammed, causing the car to alarm. Maybe the lock/unlock buttons kept pressing, causing the fob to "unpair". I fixed the plastic part from jamming the buttons, but now the car won't respond to the FOB at all. The red light flashed 8 or so times every time I push a button.

I tried the "press both lock and unlock until red light flashes twice" routine but it won't flash twice and pair. I've tried the "turn ignition to II then I four times" thing also.

I hope I don't have to pay Acura to re-pair with an HDS computer? Any ideas?
Starmanj

 

Since the key was programmed at the factory for the car, how did it become unpaired?

 

Did you follow the instructions on the back?

 

Yes that's the "press both lock and unlock until red light flashes twice" routine. I think that only links to DPMS seat memory and wheel position etc. I can't unlock the doors.

 

As a sanity check, I would try to reset the car electronics via the battery. Disconnect both cables from the battery and hold them together for ~15 seconds. Make sure you have your radio and navi codes first though.

 

Problem solved. I knew an original keyfob should not lose its programming. When the fob is disassembled for battery replacement, it is easy to lose fit in the plastic/rubber grommet and pushbuttons. When I carefully re-installed all of the fob inner fittings, it now works.