Rear doors on my A4 are not unlocking when I remove the ignition key

Hi, I have an A4 2.3SE (2003) and started having problems unlocking the off side rear door from the drivers door 'open' button . I'm now having the same problem with the near side rear door, which is where I get my daughter out of the car from. Every time over the last couple of weeks I have had to unlock the car by using the door open button on the key, pressing the open at least two times. Are the two locks sticking and is there some thing I can do to solve the promlem?

All boot and front doors open correctly I'm only having the problem with the rear doors.

Perhaps posting in the A4 section rather than the wheels and tyres section would give you more answers.

Thanks Nick,

I realised after I posted the thread.

Kevin