Remote Key Programming

Hi,

Can someone confirm the definitive way to program a new remote key fob so the central locking portion of the key works on a 2001 leon?

I've been all over the forums and tried all the methods (copied below) I can find but can't get it to work. The fob looks to be working as the red light comes on, but I can't match it to the car (tried a new battery too)...

Reprogram new remote.
Hopefully you will have 2 keys - both with transponders in. I used 2 keys to do this.
1. Switch Ignition ON and leave keyONE in the ignition.
2. Mechanically lock the vehicle using the Drivers door using keyTWO
3. Using the remote control
press the UNLOCK button once, and the horn will sound once. (mine didnt)
4. Wait 6 seconds and press the UNLOCK button again to activate the coding procedure
and the horn will sound once.
The remote control will now be programmed. Happy days

Try this procedure to sync the fob.
Complete the following within 30 seconds:
Switch ignition ON. Use key not fitted with remote control.
Manually lock driver's door.
Press and hold unlock button.
Manually unlock and lock driver's door.
Release unlock button.
Switch ignition OFF and remove key.
System should now lock or unlock vehicle.
If not, carry out programming procedure.

Method One:
1. Turn on ignition with key without buttons
2. manually lock drivers door
3. press and hold unlock button on key
4. manually unlock and lock drivers door
5. release unlock button on key
6. turn off ignition and remove key

Thanks

im having the exact same issue at the moment!! it is in the manual, it doesnt work though! again iv tryd all of the above bar vag come, as i dont know any one down here with it...
one thing that does happen with me though - the top one you have put up, the last step, when i press the button it sets my alarm off...

How do I do this if I have 2 keys, but only 1 has a transponder in?????
I'm stuck at the moment and can't get anything to work!