G80 heating

[Thoward]

My 2021 G80 3.5T only blows heated air when the car is in motion. If I stop at a light or put the car in park but want to sit in it with the heat on it literally blows COLD air. Once I switch to drive mode and the car begins to move it blows warm air. Is this a Design flaw? Is something wrong with the car. I have also tried to switch to AUTO mode and same scenario. Any help would be appreciated.

 

[DoctorJ]

My 2021 G80 3.5T only blows heated air when the car is in motion. If I stop at a light or put the car in park but want to sit in it with the heat on it literally blows COLD air. Once I switch to drive mode and the car begins to move it blows warm air. Is this a Design flaw? Is something wrong with the car. I have also tried to switch to AUTO mode and same scenario. Any help would be appreciated.

I have he same problem 2021 G80. I bought it one year old and it had absent heating in the passenger seat. Local dealor claimed it was a large repair and even though Igave it to themfor 11 days they did not even open the hood. Recently the same problem of heat only works when driving, air is cold when idling.
Did you find a solution?
thanks

 

[joegr]

...heat only works when driving, air is cold when idling...

Often, that is a symptom of trapped air in the cooling system. If so, the solution would be to correctly bleed the cooling system. A vacuum bleeder may be required.