I’ve noticed recently that using the comfort auxiliary heating function on the myAudi MMI app (whilst plugged in to shore power) is actually depleting the battery slightly.
This is how I can reproduce the problem:
1. Set car to 80% charge limit and plug in.
2. Leave overnight and check charge level in morning, myAudi MMI app reports 80% charge (no longer charging)
3. Initiate immediate or timed climate control, using either ‘comfort auxiliary air conditioning’ toggled on or off
4. Allow the heating/cooling to commence and then check the battery level using the myAudi MMI app after a few minutes. It should display something like 78-79% battery charge and the green light will be flashing on the car
I had always understood that preconditioning the cabin/battery would use shore power in this case rather than depleting the battery itself. I thought that the issue might be because the air conditioning pump was three phase and therefore needed to run the inverter to generate electricity from the DC battery, but I thought that there was a bypass to run the heating/cooling from AC.
With sufficient time of course the cabin will be heated and the battery will recover to 80% but it’s enough to knock a couple of percent off at least if you’re leaving in a hurry.
Anyone else notice the same behaviour or perhaps I have a fault?
PS I have a PodPoint charger
This is how I can reproduce the problem:
1. Set car to 80% charge limit and plug in.
2. Leave overnight and check charge level in morning, myAudi MMI app reports 80% charge (no longer charging)
3. Initiate immediate or timed climate control, using either ‘comfort auxiliary air conditioning’ toggled on or off
4. Allow the heating/cooling to commence and then check the battery level using the myAudi MMI app after a few minutes. It should display something like 78-79% battery charge and the green light will be flashing on the car
I had always understood that preconditioning the cabin/battery would use shore power in this case rather than depleting the battery itself. I thought that the issue might be because the air conditioning pump was three phase and therefore needed to run the inverter to generate electricity from the DC battery, but I thought that there was a bypass to run the heating/cooling from AC.
With sufficient time of course the cabin will be heated and the battery will recover to 80% but it’s enough to knock a couple of percent off at least if you’re leaving in a hurry.
Anyone else notice the same behaviour or perhaps I have a fault?
PS I have a PodPoint charger
