My understanding was it was parked at the airport car park, not plugged in anywhere, so no, it is not the 12 volt battery that is discharged.Your 12 volt is dead. If you leave it plugged in to a EVSE dock it will after a few days discharge your 12 volt battery. Regardless just gets some voltage to your 12 volt battery and you shoudl be able to then plug in to a EVSE dock to get it charged back up.. Then go replace the 12 volt.
I'll be interested to see what the problems was.
BTW mine will sometimes charge the 12 volt when plugged into the EVSE after charging the main traction battery. It is indicated by only the 3rd blue light on the dash flashing while the other two are off. It is also stated in the manual as such.
The indicator will also flash for up to 5 minutes if
the electrical power to the EVSE is interrupted
during charging. Charging will restart automati-
cally when the electrical power to the EVSE is
restored if the charging connector is connected.
The charge start beep will not sound when
charging restarts.
The indicator will also flash when the following
system are operating:
• Climate Ctrl. Timer
• Remote climate control (if so equipped)
• Li-ion battery heater
3 flashes
When the indicator light 䊊
3 flashes when the 12-volt
The indicator light 䊊
battery is being charged. See “Charging the 12-
volt battery” in the “EV overview” section.
CH-30 Charging
When not charging
None of the lights are illuminated when the Li-ion
battery and 12-volt battery are not charging.
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