Audi A4 Spare Key Problems


Registered User
Not sure if this is the right place so sorry if not.

I have lost my key and have looked everywhere but it just seems to of gone walk about. I have got a spare key however the central locking doesn't seem to work. When at the garage this problem did occur but they seemed to fix it. It does start the car and the central locking works manually using the buttons in the car so its not that either. I am thinking it is something really simple to do with somehow syncing the car with the key as it hasn't been used in a while but I am not sure :/

If anyone knows the fix to this would be a real help. I miss my central locking lol!


Registered User
Thank you did the trick also found my other guys had fallen out my coat pocket behind some boxes next to the coat rack!!


Registered User
Hi all.

Just an update. I didn't get anyone reply with any answers for this issues so I assume that nobody had fixed it without main dealer help.
I did have my car booked into a dealer to have the central convenience module flashed and keys recoded for the 23rd but I have managed to fix it myself.

As I said earlier, I scanned my car with vcds and didn't get any relevant errors. The only error I got was a reoccurring error stating that the car had gone into power management (essentially the battery is knackered).
This must have been what caused the keys to lose their programming to start with. The confusing thing is that with the B8 A4 and A5, the remote is automatically reprogrammed everytime the key is placed into the dash slot and the car turned on. This was not happening with mine.

I was out of options.
I then thought that maybe the power management knocked out the central convenience module (to save power for starting) and this had caused the unit to restart but not quite started back up correctly. Remember, vcds was showing no errors for the ccm.

I tried looking on vcds for an option to completely restart the module but no job.
I decided to find the ccm (which I located inside the boot, on the right hand side and is a fairly large unit with about 6 cable connectors going into it.
I unplugged all of the connectors and left the car for 2 hours. MAKE SURE YOU DONT SHUT THE BOOT, YOU WILL GET LOCKED OUT, because the ccm controls all remote functions and all lock functions including the boot switch on the drivers door.

I got back to the car, plugged all of the connectors back in, put my key in the dash, started the car, pulled the key out and hey presto, key fob works again!!

So before you give up and take your car to the stealers to be reprogrammed, simply unplug the module for a couple of hours and it will be reset and should work again!