I have a
Seat Ibiza Cupra Sport Gti (97). Owner's Manual says to insert key to be programmed into ignition, turn it til dash lights come on, hold for no more than 5secs and withdraw. You now have 20secs to complete the programming by holding down the LOCK button and pressing the UNLOCK button 3 times, then release the lock button. When you do this, the fob should flash it's LED 5 times and you're done. This has worked for me without any problems before now, hence remembering the sequence, but, I just recharged my 12v battery, and replaced the batteries inside the fob, and the first attempt at re-programming did not work. I'll be looking to replace the fob batteries with others that I bought from HK (more likely to be fresh than ones bought at local
shop?) + try again. Hope that helps.