Additional Key - programming problems - Help please

Reviving the Key thread here.

I have three keys as supplied by previous owner - 2 remote and one plastic. I did NOT receive the note of the PIN for the key.
20240430_103125.jpg The one on the right works fine - the middle one only works mechanically.
20240430_103303.jpgSo I changed the battery and followed all the combinations of steps in owners manual and on this forum to re-link the key to the car with no success.

What do the forum members suggest next ?

20240430_103337.jpg (Does this help to identify version?)

Thanks in anticipation...
Sam
 
Hi Sam,

I presume both keys start the engine without issue, and that there is just a problem with the remote central locking of one key. Is that correct?

Cheers,

Tom
 
Do you see the 9-digit part number starting 8Z0 on the second line of the text on the remote half of the fob in your photo? Does the key that works have the same part number? If not, you need to obtain another remote half the same as that one. I'd suspect that due to a common malfunction, the car's original CCCU was changed for a later generation unit, the remote fobs for which have a D at the end of the part number.
 
Your last picture of the fob clearly shows the part number has no "D" at the end. As Ian has said above the "D" versions are for the later CCCU or to be more accurate if the CCCU part number has a DOUBLE letter at the end , for example AF. However as it has no "D" it is only compatible with SINGLE letter CCCU for example Q. Hope this helps visualise what is needed. Other than that @timmus can guide you as he has done more keys than anyone else.
 
Both keys work in Ignition.
The first works on Central Locking
20240430_141537.jpg
The second does not work on Central Locking (having tried two different new batteries and gone through sync procedures of various flavours)
20240430_141618.jpg
The serial numbers (as per @Proghound question above) are the same.

Next steps?

Sam
 
Well as both keys are the same part number without the D then both are CAPABLE of working with a single letter CCCU and as one key works completely safe to say you indeed have a single letter CCCU.

As you have tried a NEW battery and the sync process has not worked there is a possibility that either the battery is not making good contact with both terminals or the remote circuit board has failed.
 
SamT said:
Next steps?
Click to expand...
Based on all information available, I think we can safely conclude that either…
a) the non-working key isn’t programmed to the car, and therefore cannot be resync’ed using the usual methods or…
b) that key fob has simply failed.

Cheers,

Tom
 
timmus said:
Based on all information available, I think we can safely conclude that either…
a) the non-working key isn’t programmed to the car, and therefore cannot be resync’ed using the usual methods or…
b) that key fob has simply failed.

Cheers,

Tom
Click to expand...
I think it more likely that the problem is b (the vehicle was one owner).
The buttons on the working item are more worn and the white lining more rubbed. The failing key fob looks a bit less worn and the white lines are clearer.
Next ?
 
Maybe get a second hand key, hopefully via Market Place, then swap the blade, and immo chip over from yours?
Mac.
 
SamT said:
Next ?
Click to expand...
I’ve got plenty of replacement fobs of the same type that I can post, but it wouldn’t do anything until programmed to the vehicle. I can also help with that, but I’d need to be in the presence of the car.

Timmus Audi A2 Upgrades, Retrofits and Repairs

Greetings to all A2 owners, For over a decade, I have been upgrading and repairing A2s. Having dedicated myself to just one model of car, I have intimate, specialised knowledge of the vehicle we all love. Countless reviews and recommendations are scattered across the pages of this forum. My...
www.a2oc.net www.a2oc.net

Although I’m based ‘up north’, I occasionally work ‘down south’ such that there are opportunities for A2 owners across the country.

It is possible to swap the rubber buttons between the key fobs. If you’d rather have the nicer buttons on the working remote fob, that’s easily doable.

Cheers,

Tom
 
timmus said:
I’ve got plenty of replacement fobs of the same type that I can post, but it wouldn’t do anything until programmed to the vehicle. I can also help with that, but I’d need to be in the presence of the car.

Timmus Audi A2 Upgrades, Retrofits and Repairs

Greetings to all A2 owners, For over a decade, I have been upgrading and repairing A2s. Having dedicated myself to just one model of car, I have intimate, specialised knowledge of the vehicle we all love. Countless reviews and recommendations are scattered across the pages of this forum. My...
www.a2oc.net www.a2oc.net

Although I’m based ‘up north’, I occasionally work ‘down south’ such that there are opportunities for A2 owners across the country.

It is possible to swap the rubber buttons between the key fobs. If you’d rather have the nicer buttons on the working remote fob, that’s easily doable.

Cheers,

Tom
Click to expand...
Thanks, that all sounds really useful.
What resources are needed to swap over and program the key to the car, could I do myself and are there any step by step instructions?
I can survive with the one key for the time being and wait for a suitable date and time if this is more practical.
(I'm in South Somerset)
cheers Sam
 
SamT said:
Thanks, that all sounds really useful.
What resources are needed to swap over and program the key to the car, could I do myself and are there any step by step instructions?
I can survive with the one key for the time being and wait for a suitable date and time if this is more practical.
(I'm in South Somerset)
cheers Sam
Click to expand...
Evening Sam,

The thread I always point people asking the very same question is this very one. Go back to the beginning and read through Steve’s @Birchall content. You’ll need to have access to VCDS. It there are affordable option with the Registered Lite version.

I’ve been using the mentioned procedure for many years now and helped many A2 owners out following exactly what’s at the earlier parts of this thread. Here to answer any further questions you might have as I do this task quite often to help the community out.

Kind regards,

Tom
 
SamT said:
Thanks, that all sounds really useful.
What resources are needed to swap over and program the key to the car, could I do myself and are there any step by step instructions?
I can survive with the one key for the time being and wait for a suitable date and time if this is more practical.
(I'm in South Somerset)
cheers Sam
Click to expand...
VCDS software plus the instructions in this very thread. 👍🏻

Thankfully your second key is there in an emergency, even if it doesn’t have remote control functionality in the meantime.

Cheers,

Tom
 
You must log in or register to reply here.
Back
Top