Switch ignition ON with new key. Select:  Immobilizer -> Login
Enter 5 numbers Login Code (add 0 if you have 4 digits Login Code).
For example, if your Login is 1234, enter 01234.
Save
Go to Adaptation
Enter 01 in "Channel Number"
Enter
The "Stored Value" is the number of keys currently matched.
Enter number corresponding to the total number of keys to be matched, - for ex  2 ;
Enter -> Save
Switch ignition off and remove key
Insert next key to ignition and switch ignition on again
Wait 15 sec. Repeat this step with each key until all keys have been matched.
Select:  Immobilizer -> Login. Enter Login Code. Go to Adaptation
Enter 00 in "Channel Number"
Enter 0 and Save. This will learn ECU with Immobiliser.

Procedure for adding transponder keys to vehicles with Immobilizer in the instrument cluster:
(Audi from year 97, Golf 4, Passat B5, B6 )

Switch ignition ON with new key. Select:  Instrument -> Login
Enter 5 numbers Login Code (add 0 if you have 4 digits Login Code).
For example, if your Login is 1234, enter 01234.
Save
Go to Adaptation
Enter 21 in "Channel Number"
Enter
The "Stored Value" is the number of keys currently matched.
Enter number corresponding to the total number of keys to be matched, - for ex  2 ;
Enter -> Save
Switch ignition off and remove key
Insert next key to ignition and switch ignition on again
Wait 15 sec. Repeat this step with each key until all keys have been matched.
Select:  Immobilizer -> Login. Enter Login Code. Go to Adaptation
Enter 00 in "Channel Number"
Enter 0 and Save. This will learn ECU with Immobiliser