I've seen other articles regarding central locking but none of them seem to desvribe my particular problem. I have a 1999 octavia 1.6 petrol. I do not have electric windows or remote locking. The key will unlock the driver's door only but will lock all doors. The key will only open the passenger door but noi others. The key will open all doors from the boot. Whiule driving the doors lock/unlock randomly. can anyone help?

Yes had this with my Superb...water has got into your wiring loom & basically the wire is rotting hence the cental locking randomly lock/unlocking. I got shut pretty quick...also speedo & rev counter kept on workin whilst driving along with interior lights & car alarm. Hope that helps.