Key not found after starting car

[disco__dave]

I recently had an additional key coded for my 2012 VW cc (aftermarket) as one of the original keys has been lost.

Perhaps it is by coincidence, I have been having issues with my original key, where I get the "key not found" error message after starting the car and usually briefly after starting to drive. The centre console (seems like passenger side) also makes a short and rapid clicking sound (like a relay).

At first I thought it might be the battery in my key fob, which I replaced with a new and reputable branded battery. I have also voltage tested the key fob battery and it's ok,so not a dud.

Can anyone suggest what might be causing this? And how can I fix this issue? Or troubleshoot it further?

See below a recording of the issue with the clicking sound and error message display.

Key issue - Album on Imgur

Cheers

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