(T) central locking query

There's an option in the headunit's menu to turn that off. I think you have to hold the menu button down for a few seconds and said menu pops up. Can't remember what the option is to turn it on/off, but it should be there, somewhere, along with a few other options. Hope that helps

If you read stilo16v's post again I think you're find he's correct although can't say I see this as an issue myself.

There is an option to set "max turn on volume" which if set very low somewhat negates the annoyance of having the radio coming every time although personally I'm happy to have it on.

If someone really doesn't like the radio then setting it to manual mode seems perfectly logical to me. Most things you turn on you expect to have to turn off