What have you just found out about your XC40.

[Andy40]

To increase/decrease the heater temperature, press the Voice Command button and say "I'm cold" or "I'm hot" and the bossy woman will oblige.

Said harridan has difficulty when trying to understand my navigational requests, though. I might as well have the current wife sitting in the passenger seat barking "words of good advice" at me.........

I’m going to try that out

[Cornishman]

"Set temperature to XX degrees" works too!