Electronics shut down at 15% bat & 15F

[cstork]

Driving home in 15F temps, the car electronics shut down at about 15%/50 miles on the battery. Still had the snowflake next to the battery display. The car was driving normal, but the screen was constantly rebooting and the garage door opener button didn't work. I wonder if the battery voltage gets too low.

 

[Sophias_dad]

That is not acceptable. Sounds like the 12V battery was dying. Be happy you weren't coasting to the side of the road.

 

[cstork]

Got this response from Tesla:

In these extreme temperatures the batteries will get cold and they will pull the energy away from the non essentials of the vehicle. You will still be able to drive and do the basic functions, but when you get that low the vehicle will push what it can to the batteries to keep them in good order.
Now, that being said, if you find yourself dealing with this issues and the batteries are NOT cold or you are NOT low on battery life, then we will want to get you to call in for troubleshooting.​

 

[Sophias_dad]

That's actually a safety issue I bet... No screen(during reboot) means no turn signals for me.

I think my record low-miles was 24, and it was below freezing. Had no issues at all, except for the car just being slower in general.

 

[Rocky_H]

That's actually a safety issue I bet... No screen(during reboot) means no turn signals for me.

Not true. You don't get to hear the artificial clicking sound it makes in the inside of the car, but the turn signals are still working.

 

[voip-ninja]

Driving home in 15F temps, the car electronics shut down at about 15%/50 miles on the battery. Still had the snowflake next to the battery display. The car was driving normal, but the screen was constantly rebooting and the garage door opener button didn't work. I wonder if the battery voltage gets too low.

What was the state of charge before you started driving and how long were you driving?

 

[MorrisonHiker]

Not true. You don't get to hear the artificial clicking sound it makes in the inside of the car, but the turn signals are still working.

Exactly. The Model 3 will still drive without a screen. It may be hard for the driver to know what's going on, but even TACC an AP will still work:

 

[cstork]

What was the state of charge before you started driving and how long were you driving?

I started driving with 70 miles left on the battery and the temperature around 5 degrees. Traffic was slow and the outside temps were about 15 degrees, so the battery probably didn't heat up much over the 90 minutes (over 40 miles) before the constant reboot. This was downhill and in the past the 40 miles would use up only ~20 miles of battery.

This is a difficult, unusual situation for an EV battery. I did partially to push the limits.