My MY is getting PPF and ceramic this week, and I've noticed that the frunk is open through the Tesla app, and I am pretty sure they are closed for the day now, so I'm curious if the frunk light is going to stay on all night, or if it auto-shuts off. I don't see an option in the manual where they could have shut this off manually, either. And if it is left on all night, how much drain could that really have on the battery?
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Frunk light auto shut-off?
- Thread starter BreatheEasier
- Start date
LevelHeaded
Member
Note that some electronics are powered by the 12v normal vehicle battery and not the drivetrain battery
Exactly my thoughts...I don't expect to see drain on the main battery, but it could drain the 12v battery overnight. So what happens if the 12v battery is drained but the main battery is over 50% charged?
Bikeman
Member
I thought the question from the OP is whether the frunk light was actually on because they were getting a warning that it was open (when actually closed)
No, the car is being PPF/ceramic coated, and I could tell via the Tesla app that they left the frunk open all night. It could have been they only left it 'popped' and not fully open, but if the light doesn't auto shut-off, then as little as that light is, it will cause a drain.
According to the owners manual, the 12V battery will auto-charge from the vehicle battery:
"NOTE: When left idle and unplugged, your vehicle periodically uses energy from the Battery for system tests and recharging the 12V battery when necessary."
I measured no parasitic drain overnight, so I have to believe the light auto-shut off. I would expect 1% drain. Sentry mode wasn't active, but everything else was left as default.
According to the owners manual, the 12V battery will auto-charge from the vehicle battery:
"NOTE: When left idle and unplugged, your vehicle periodically uses energy from the Battery for system tests and recharging the 12V battery when necessary."
I measured no parasitic drain overnight, so I have to believe the light auto-shut off. I would expect 1% drain. Sentry mode wasn't active, but everything else was left as default.
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