Convenience key unlocking issues
 

Hi all,

Recently posted this in the general tech section but then found this one and thought it might be more apprpriate here... Sorry if reposting in another section is not allowed though!

I'm a new member to the forums having just bought my first Audi, a 2009 B8 A4 2.0 TFSI S Line. I have convenience keys for the car and these work perfectly with the ignition and, up until recently, they worked well with the central locking too. However, in the last 3-4 days the doors no longer unlock when you grab the door handles/sensors. The boot lock still works, so it appears as though its just the passenger doors that are affected. Also, both keys seem to have stopped working at the same time and I haven't change any of the settings for the keys on the MMI.

Anyone have any idea of common issues regards this. Any solutions would be greatly appreciated.

Thanks in advance