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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[kamold]

Expensive? From VW I'd say yes. Maybe $1k?
Then labor to replace it, it's the immobilizer so would need to be programmed.
Or you can get one from a wreck or ebay, and if you know how to read and write eeproms (or know someone who can) you can just copy the data over from your existing one to the new one using a free tool from dunt.at

[disco__dave]

Expensive? From VW I'd say yes. Maybe $1k?
Then labor to replace it, it's the immobilizer so would need to be programmed.
Or you can get one from a wreck or ebay, and if you know how to read and write eeproms (or know someone who can) you can just copy the data over from your existing one to the new one using a free tool from dunt.at

Ouch. I'm assuming the labour isn't too bad to access it?

I'll speak to the auto elec that provided my replacement key. I assume he could do all that as well.

For the time being, I may just ride this one out and see whether it improves for now.

Appreciate your advice!

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[kamold]

Yeah access is pretty easy.
Just behind the glovebox.
Auto elec should be able to read the eeprom.
Have them get in touch if they aren't familiar with this particular swap.

[disco__dave]

Yeah access is pretty easy.
Just behind the glovebox.
Auto elec should be able to read the eeprom.
Have them get in touch if they aren't familiar with this particular swap.

Thanks! I'll provide any updates on how things progress.

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