2014 Model S 85.
firmware 2019.16.1.1 697c2ff
En-Route battery warm up was specifically mentioned in the release notes when I recently updated.
This early morning I headed to a supercharger with a cold battery power limiter was visible from the start. Through CAN bus data I monitored the battery temperature and battery heater activity the entire time. The battery heater did not turn on the entire drive.
I plugged in at the supercharger and the power was lower than what I would normally see. Sure enough, the battery heater kicked in shortly after I plugged in. It stayed on until the battery had reached aprox 28 C (82 F). I have seen this behavior many times before, long before the recent software update. When charging at a supercharger and the battery is not warm enough, it will turn on the battery heater to warm up the battery.
Clearly the battery needed to be warmer for best supercharging speed, yet the car did not warm up the battery on the drive. Only once the car was plugged in did the active heater kick in. Now I'm not saying it doesn't work at all. It most probably works just fine for Model 3 and 100 Model S/X. I assume they just don't bother making changes to the old cars.
firmware 2019.16.1.1 697c2ff
En-Route battery warm up was specifically mentioned in the release notes when I recently updated.
This early morning I headed to a supercharger with a cold battery power limiter was visible from the start. Through CAN bus data I monitored the battery temperature and battery heater activity the entire time. The battery heater did not turn on the entire drive.
I plugged in at the supercharger and the power was lower than what I would normally see. Sure enough, the battery heater kicked in shortly after I plugged in. It stayed on until the battery had reached aprox 28 C (82 F). I have seen this behavior many times before, long before the recent software update. When charging at a supercharger and the battery is not warm enough, it will turn on the battery heater to warm up the battery.
Clearly the battery needed to be warmer for best supercharging speed, yet the car did not warm up the battery on the drive. Only once the car was plugged in did the active heater kick in. Now I'm not saying it doesn't work at all. It most probably works just fine for Model 3 and 100 Model S/X. I assume they just don't bother making changes to the old cars.