PristDean
Prominent Member
- Joined
- Dec 27, 2022
- Messages
- 812
- Reaction score
- 1,191
- Points
- 346
- Location
- Hampshire, UK
- Driving
- MG4 SE SR
So, having collected my car in spring, I have tested the cooling of the car with alarming results. Now we are approaching winter I thought I would test the heating as my confidence was knocked with the cooling experience.
So, tested with the car with it plugged in but not charging, with AC switched on and off, no hot air at all after ten minutes in each setting. Not even a warm breeze !!
So I unplugged the car and tested it again. Now if you switch the AC on you can hear it spin up and run
and with it on or off, warm air starts to circulate.
Long and short is... if you want hot air in the winter, you better not have the car plugged in and not charging, as running the AC and the heating seems dependent on drawing power from the HV battery. When the car is plugged in and not charging, HV battery access is disabled.
Not sure if anyone has had an update which fixes this or a different experience ?
So, tested with the car with it plugged in but not charging, with AC switched on and off, no hot air at all after ten minutes in each setting. Not even a warm breeze !!
So I unplugged the car and tested it again. Now if you switch the AC on you can hear it spin up and run

Long and short is... if you want hot air in the winter, you better not have the car plugged in and not charging, as running the AC and the heating seems dependent on drawing power from the HV battery. When the car is plugged in and not charging, HV battery access is disabled.
Not sure if anyone has had an update which fixes this or a different experience ?