How coolant level affected my range

[shahryaran]

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.

Symptoms:
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.

Reasons:
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.

 

[spsheridan]

Is the coolant in this case like an AC refrigerant coolant or some other type of liquid? Just wondering if it would dissipate into the atmosphere or show a leak on the ground.

 

[shahryaran]

Is the coolant in this case like an AC refrigerant coolant or some other type of liquid? Just wondering if it would dissipate into the atmosphere or show a leak on the ground.

The AC refrigerant is its own system.
The coolant is for battery, charging system and AC radiator.
A leak would show on the ground.

 

[geometro]

Thanks for this info!

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.

Symptoms:
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.

Reasons:
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.

View attachment 990721

Thanks for this.

What did this mean:

>One day I saw the low coolant alert in the service mode.

 

[shahryaran]

Thanks for this info!



Thanks for this.

What did this mean:

>One day I saw the low coolant alert in the service mode.

I went to service mode and checked for any alert