well that was my point in my previous post! i thought that you do not actually program the transponder at all. is it not merely that you tell the car to accept that specific transponder?
Hmm, good question that. You definitely need to have a new transponder, you cannot reuse them. However, as you say, the transponder is passive, and ships ready to emit its unique code. How it would therefore know that it has already been assigned, I don't know. Perhaps rather than the chip knowing that it is not a virgin, the car's ECU knows it is not a virgin by the fact it is emitting the code already - maybe the very first time it emits the code, it emits a message which basically tells the car it is a virgin? I don't really know, just guessing.
Unless the code that the chip emits is affected by the exact RF wave transmitted by the car - maybe the car knows its RF wave is in the range of x and y, and therefore to expect to receive a transponder code within z and aa?
You had a lot of questions earlier in the thread - any still unanswered?
Will retry again tomorrow and hopefully this time it will program the remote. Wanted a new transponder for this flip key so had a local auto locksmith out but he claimed he could not get the retrieve the SKC from the car.
Would it be worth buying a VAG-Tacho cable and software off t'ebay along with a new virgin transponder in order to create myself a new transponder for this slip key or is it unlikely to work in view of what the local locksmith said?
Some people seem to be able to get tacho to work, some people get commander to work instead. Not sure what the reason behind it is, sorry. It might work!
having read through the entire thread there only appears to be the one procedure to program the remote, it's just the fact it's been repeated multiple times that makes it seem like there's 3 methods!
I've tried this method again and the remote still won't program to the car!
I have definitely seen more than one method - they all look similar, but I know the 2 differ by whether you are supposed to press lock or unlock on the new key, etc. double check them!
Right,got mine today but noticed red led does not flash when pressing lock/unlock button so guessing need new battery,how do you get to the battery on them ?
Open flip key, insert flat head screw driver in small channel in the middle of the 'trench' that the key blade usually sits in. Twist the screwdriver to prise the upper and low parts of the key apart. Then use a flatbed to prise apart the front and back of the lower part of the key - prise it open in the rubber part at the top of the key (the bit that will be hidden when the 2 halves go back together).
Can anyone confirm if buying a VAG-Tacho will definitely enable me to obtain the SKC and program a new blank transponder?
No. As I said, some people use tacho, some use commander. Not sure there is a definitive reason why one piece of software works for some, and some need the other. Unfortunately it is a different interface cable as well as a different piece of software.
Bought a remote key from a Leon Cupra and it still will not program to the car! Is there a chance the remote locking aspect of my vehicle is affected in some way? is there a fuse maybe?
Personally, I doubt it. Took me a while to get the process correct for my key to pair.
Couple of things i want to get right in my head before i go ahead:
1) Can the blade on the standard key be transferred into a flip headed fob?
2) Where can you pick up the circuit board by itself of the flip headed fob as the two buttoned fob's circuit is no use. Can't see any sold separately on fleabay.
3) Have two keys at present, 1 standard and 1 two buttoned (central locking buttons don't work). Does it matter which key is in Ignition when programming flip headed key?
Thanks
1) pretty sure this is a no, the exposed part is identical, but I'm pretty sure the bit of the key inside the black plastic (on the standard key) is different. You could cut it to fit, I have done did before.
2) why do you want a circuit? Buy a flip ke off ebay with the internals included and repair to your car. I have seen them listed, but not often.
3) no, don't think it matters.