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How coolant level affected my range

I'm writing this post to help those owners who witness similar issues that I had with my range.

The car:
2020 M3LRAB bought used from Tesla with 38K miles on it.

3%-5% charge drop while parked.
Dramatic range drop while driving.
AC not blowing cold enough.
Fan running for a long time after supercharging.

The story:
The best miles traveled was about 180 with average of 150 which is half the advertised. Given the age of the car, I would have been happy to get 250.

One day I saw the low coolant alert in the service mode. I opened a service ticket and Tesla found a leak and replaced the coolant reservoir along with complete flush and fill.

Now my range has increased dramatically. Infact, every time I park after driving, my range goes up.

It is strange that the low coolant level alert did not show outside of Service mode despite that they was a leak. Because the coolant system connected with AC, battery and other electrical/ electronics components all in series, the coolant level becomes very important for thermal sensitivity and efficiency.