[olopezm]

I like Volvo's; never owned one but I like them!

I have no idea how to make it stay off, but I would suggest to disconnect the electrical connector on the A/C compressor or you can follow the lines coming out of it to find a pressure switch. Disconnecting any of these should make the compressor to stop working.

That' how I keep my Town Car from cooling the air during the winter.

Oscar.