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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[kamold]

Is your car KESSY? (keyless with the push button start)
Your IMGR link doesn't have anything in it.
Also there is no such thing as a coincidence

[disco__dave]

Is your car KESSY? (keyless with the push button start)
Your IMGR link doesn't have anything in it.
Also there is no such thing as a coincidence

Hi there.

Yes it is kessy.

Imgur link fixed (I hope!).

Video is of a couple of occurrences with the rapid clicking sound then the dash "bell" and error display.

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[kamold]

What's your battery like?
Car battery not key.

[disco__dave]

What's your battery like?
Car battery not key.

Both car battery and key fob battery all ok

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[disco__dave]

Ok, so, I found a guide online to "re-pair" a previously paired key, involving the emergency key lock, inserting fob into dash etc.
I have made a few trips without receiving the key not found error, but I am still getting that rapid clicking sound every time the central locking is locked. any idea what that might be?

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[kamold]

The location you say the sound is coming from doesn't match the location of the elv, kessy module or BCM.
Only thing I can think of is the epb which is under the centre console.
It makes clicks when starting.

[disco__dave]

The location you say the sound is coming from doesn't match the location of the elv, kessy module or BCM.
Only thing I can think of is the epb which is under the centre console.
It makes clicks when starting.

Thanks. I just tried to listen around whilst reproducing the sound (locking the doors) and it definitely sounds to be coming from the passenger footwell area/centre console. Back to the drawing board.

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[kamold]

Ah if it's passenger footwell that's where the CCM is - behind the glovebox.
That's the module that contains the KESSY receiver/authorization.
Sounds like it may be failing.

[disco__dave]

Ah if it's passenger footwell that's where the CCM is - behind the glovebox.
That's the module that contains the KESSY receiver/authorization.
Sounds like it may be failing.

Uh oh. Are they expensive and/or difficult to replace?

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