Toyota Aygo-Stereo buttons not working

[hugotheaygo]

Hi all, I've only had my Toyota aygo (2010) for a couple of months now but I've noticed that the buttons on the built in stereo are really intermittent. The worst one is probably the volume! Some days they work perfectly fine and some days they don't work at all, as you can imagine this is very annoying! I just wondered whether anyone has the same problem, knows what it could be caused by and whether there's anything I can do about it. Thank you all in advance! :)

[Raistlin]

It probably a dirty switch, mine did that so I gave them a liberal spraying of WD40 and all was good.