206 GLX Alarm randomly goes off

This is a known fault and there is a recall for it. Check with your dealer and take both ignition keys and transponder code card. They will need to do a BSI download. Free of charge.

Hi thanks for this mate, but what is a transponder code card?

It's a credit card sized piece of plastic, mainly blue with the Peugeot logo on it and a rub-out strip with 4 numbers or letters or a combination of the two. This is the transponder code and they will need it to do a BSI download. Best to take it with you for any problem you may have. Will save a lot of time. If you don't have it, the dealer can get it (from the same place they get radio codes and key codes) and will charge you around £15. The dealer does get charged as well!!