Wow! 45* ambient, driving for an hour and no heat?.....Really?I have the same problem - poor design. It was 45 degrees out side and I was driving fo over an hour but no heat. At best to was just slightly warm. Wonder what the defrost will do when it is cold outside. The 2019 is one issue after another. It now started to brake fo no reason.
^^^This^^^ 18F this morning. Started the V, hvac in manual mode, temp set to HI, fan at #3, let rpms drop to 1200 (maybe 30 seconds and oil has easily reached top of motor), and started driving. Drove 1.4 miles to the Post Office at <35 mph (residential), coolant temp at 137F and thermometer in the left vent reading 89F when arriving at the Post Office. Same route back home, 2.8 miles round trip, maybe <15 minutes total (?♂). Arriving back at the house coolant temp 163F, vent thermometer 121F, temp still set to HI.What part of the US do you live in? I've only tried the auto start a couple of times during the summer months, but 10 minutes on a 98 degree day was not enough to cool the interior to 72 degrees. It was cooler than not using the auto start. As for those who complained about the heaters not warming up quickly, I do not understand. My '18 Touring heats the cabin in a short period of time. I got in this morning (SoCal), 42 degrees outside, I never warm up my cars, just start it up and drive. Within 2 miles it was already blowing very warm air (set at 73 degrees). I lowered it to 70 degrees after mile 4.