HiI have a 2013 3.0d portfolio with keyless entry. The button in the door handle on the passenger's side has stopped working and won't lock the car. I've noticed the drivers side is now playing up and doesn't always work.

Can anyone advise if it's the button that needs replacing or some other module. Also can the rear door handles/buttons be switched with the front door handles/buttons as the rear ones are working fine.

Thanks