Hi,
SUCCESS!!!
I had a spare key that was not matched to the CCCU and I wanted to match it.
Tom (Timmus) had kindly had a key blade cut for me so I at least had the option of getting into the car if I needed to.
I managed to pair the remote operation of the locks using VCDS and doing the following
Existing key in the ignition and ignition ON
select control function 46 "CCCU"
Then click on "adaption - 10"
Then enter channel "21"
Click on [Read]
This will display the number of currently stored remotes in "Stored Value". - Mine always displayed "0" as I think all A2s do? so don't worry if yours shows zero too.
The instructions from Ross Tech state Enter your total number of keys up to a maximum of 4(including any existing keys) in "New Value"
DON'T enter the total number of keys, instead enter the position that you want to code the key to (4 positions possible) so start with "1"
The field higher up should then show "Adjustment",
Press the lock button on the key that is in the ignition and the field near the top should change from "Adjustment" to "Recognised.
Click on "save" and the first key is linked to the remote operation of the locks
leave that key in the ignition and switched on.
Enter "2" in the new value field and the field near the top should read "Adjustment" again.
Press the lock on the second key that you want to match and the "Adjustment" should change to recognised and then click on save
Repeat this with "new Value" 3 (if you have a third key) to match press the lock on the third key, then click on "save"
Repeat again with "new value" 4 (if you have a fourth key), press lock on the fourth key, then click on save.
You have now matched the keys for remote operation.
Now the tricky bit, if the keys you have matched are not new they will have the previous immobiliser chip in them.
Unless you are very comfortable with VCDS and are very careful when retrieving data settings from your instrument cluster PLEASE don't risk playing with the important settings below.
You need to buy new chips I bought 2 from this seller
http://www.ebay.co.uk/itm/Two-Audi-...482?pt=LH_DefaultDomain_3&hash=item3392d5e922, £9.25 for two !!
Remove the old chip and replace it with the new chip. To do this you will need to prise out the little Audi logo and remove the screw and then separate the two halves of the key and then split the "key end" in two where they are joined and you should see something like the following
Remove the chip and insert the new one and reassemble the key.
To program the immobiliser chip you will need to know the login PIN of your instrument cluster, I managed to get mine by using a cable I bought on eBay (a VAG K+CAN Commander) such as this one for £14.99
http://www.ebay.co.uk/itm/151041860027?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT (PLEASE check to see if this is a legitimate and not pirated cable, I can't confirm this, but I only bought mine to help a fellow member get the dump file that he needed for a problem he was having, not for commercial reasons)
You will need the free software "VAG Commander" and that will easily enable you to get the PIN number, the Login code will show at the bottom of he screen..
CAUTION, if you play around with this software it can disable your A2 and cause serious problems. So only ever use it to just read the data / login code, NEVER change any code or overwrite the files in the instrument cluster.
But as I say, I was able to use the cable and software to easily get my 4 digit login pin that I can then use on VCDS to program the immobiliser chip (amongst other things you can do if you have the login PIN)
Once you have your r character code you can program the immobiliser chip in your replacement keys with VCDS.
To do this via VCDS you need to do the following
put the first key in the ignition and turn the ignition on
place the other keys away from the column (passenger seat is fine)
select control module 17 -"instruments", select block 022 click "GO". if the value in field 3 is 0 then unfortunately the key/immobiliser in the ignition switch is not valid, if it is a 1 then you are fine. You can try this for each key you want to code but this step is optional.
The next bit is important, select block 024, you are hoping to see a zero in fields 1, 2 and 3. if there is a number other than zero you MUST not switch off the ignition until you have waited at LEAST the number of minutes shown in the fields.
Click "Done - go back"
N0w click on 11 - Login and enter your PIN but you must add a leading zero o make the PIN a 5 digit number - click on "do it"
you are now authorised to code the chips in the keys.
go to Adaption - 10 and then enter channel number 21 and the click on Read.
Enter the TOTAL NUMBER OF KEYS that you want to be able to use in the "New value" field
NEARLY THERE
Click on Save, then Done - Go back
The first key is now programmed, remove it and insert the second key and turn the ignition on, the second key is now programmed, repeat for the rest of the keys (if any) but you must do this for the exact number of keys that you entered in the "New value" field earlier.
This must be completed for all keys within 60 seconds !!!
Job done !!!!
I have used the exact process as listed here and so I know it works.
Unfortunately my new key came up with a status of 0 when checked and so I can't program the immobiliser on that one just yet.
But this is the first time I have managed to sort out an additional key that is now fully operational (for £20 in total, including the purchase of the cable!)
But £5 for the chip, £10 for a new blade and whatever you can pick up a used key for, is not bad.
If I manage to get the "new shape" key fob working I will let you know how.
Steve B
