I can only turn on / turn off the heater. But the Volvo on Call app have support to set Heater Timer #1 & #2 that will turn on once during the upcoming 24 hours.
Would it be possible to expose the possibility to set Heater Timer #1 and Heater Timer #2?
By using the timer the car can smarter pick what time it should start the heater for the current condition.
Else i will have to do something like 30 minutes before trigger turn_on heater and that might be to early or to late.