magico13 wrote:Did you fully turn the car on to Ready mode? (car with arrows on the dash). You have to do that to turn on the climate control, if you just push the button without pressing the brake it will just go into aux mode and run the fan without running the heat.
Unless the '13 - '17 models are different from the '11 - '12 models, surely you cannot get into Run mode while still plugged in (whether charging has been completed or not)?
As BrockWI says, the car has to be actively charging (or showing charge complete with 3 solid blue lights) for pre-heating to work.
If the 3 blue lights have already gone out, even though still plugged in, presumably it is too late for pre-heating. Haven't verified that, but it sounds logical.
Don't think the timer is a factor here (which OP hasn't used anyway) if the charging process has run its full course to 100% without the timer.
So the key appears to be: get the pre-heating done sooner.