Thanks for explaining this issue. But is brings me to another question:
How can I check the 12V battery with a Voltmeter when the DC/DC kicks in as soon as Open the door, trunk,etc ?
I just want to make sure my 12V batteryis healthy and does not need to be replaced.
When I check the voltage of my 12V battery it shows permanently 14.2-14.4V. (using 12V car outlet)
Does it mean the battery is permanently charged via DC/DC from High Voltage Battery ?
If not in charge mode the voltage should read around 12.5-13V.
Am I correct ?