Door Lock/Alarm issues

[Heavydee54]

I have a 1999 Boxster, 5sp manual that has been having door lock and alarm issues. Basically, I get the double beep from the horn when I try to lock the car with the fob, and the dash switch does not work at all.

I removed the ECU from under the seat, removed the board, soaked it in 99% medical grade alcohol for several hours. I then drained it and dried it thoroughly. I also changed the ignition switch.

Everything works, including the window drop, windows, interior lights. Car starts and runs without a problem. The only thing that still doesn't work is the locking/alarm system. I get what sounds like a buzzing, grinding sound coming from the control module under the seat, and then the double beep from the horn. I still have the following codes:

25
60
34
46
47
61
58

I called the local dealer, and they told me that it is usually an all or nothing response from the ECU, and that it is very strange that everything works except for the door locks.

Before I spend the money for a new ECU and having it programmed, is there anything else that I can check or replace? Thanks for your help.

Rob