Hi, customer needed 2nd key so I used IDS to program new key to vehicle which works fine. He also wanted a new 3 button fob to go with the key which I programmed by turning the ignition key on/off 8 times etc. This got the new fob to work but then the old fob which worked 2 minutes ago, now doesn't.
So I programmed the old fob by the same method, that now works but the new one now doesn't.

Any help would be appreciated.

Thanks, Martin.