[s-cars] Trouble Programming IR Remote

[weski at verizon.net]

The IR remote on my 95 S6 stopped working last winter and I'm trying to 
get it working again.  I've replaced the batteries with the correct type 
of battery and verified they are installed correctly - 2-positive down 
towards the key end and 2-negative down towards the key ring end.

I've tried to follow the manual for programming the control unit with 
the key codes but haven't had any luck.  Here are the instructions I 
followed:
1. Insert any key into the steering lock and switch on the ignition 
(turned to ON position but did not start vehicle)
2. Lock the vehicle with another key on the driver's side. Remove the key.
3. Point the key whose code is to be programmed at the IR sensor and 
briefly press the transmitter button on the key once (to program this 
key for memory position #1).
4. The anti-theft alarm should sound briefly after each signal to 
confirm proper reception.
5. Wait 5 seconds after entering the last pulse and then press the 
button once again.  The vehicle should unlock and the programming is 
finished.

I don't ever get the anti-theft alarm signal in step #4 above. Could my 
IR receiver have died?  Any troubleshooting wisdom from the list?

TIA,

Paul Dooley
95 S6 on manual locking only after 269,000 miles