300M climate control goes on by itself!

[PAul Newman]

Here's a good one - after having my 2000 300M last serviced, the
climate control has come on several times by itself. I thought it was
my iagination for the first few times. I saw it and thought, I swear I
turned that off...

Any ideas, or should I just get them to replace it before my warantee
runs out?

Paul

Thanks