Door locks
 

I'm trying to get rid of all the small niggles on my Boxster, and one of them is what I think to be a door lock problem. Sometimes it just starts to lock/unlock repeatedly and both windows go up and down. First I thought it could be a bad lock switch on the dash, so I took it off and sprayed a bit of wd40 to try to clean it. It started working without problems, but not for long. Sometimes the alarm triggers itself and reports a door open, but I don't know if the problem is on the lock dash switch or one of the doors switches. Is it possible to get that reading on a obd reader? How can I find out where the problem is?

Please help me, I need to get this sorted without droping a ton of €€€ on the dealership. :-/

Evidence points to the central locking unit, under the driver's seat. The a wet CLU can cause all sorts of electrical quirks. Check under the seat if the carpet is damp, then theres your answer