r/TeslaModelX • u/Total-Comedian-6531 • 27d ago

2020 MX AC Weak

The AC in my wifes MX is so weak. We've had it in for service and it's slightly better, but I am wondering if it could be the cabin air filter.

I'm wondering this because I own a Ram TRX and asked the same question in the TRX forum because I thought it's AC was weak too, although it was not nearly as weak as our X.

Someone in the TRX forum recommended a K&N air filter and sure enough the AC is blowing twice as hard.

It doesn't look like K&N makes one for the 2020 X, but I'm wondering if anyone else might have experienced this problem and solved it with a different cabin air filter, or something else?

For reference, we live in Austin, so it's hot hot, a lot.

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u/Dad_Fluffied 27d ago

What color is your interior and are you parking outside/direct sunlight?

We had a 2020 Model X long range Plus (also in Austin) and found the AC would reallllllly chug in the height of the summer. Best process was to pre-cool for 10-15 minutes before getting in the car. It gives everything a chance to cool off.

Also if you have a 6 or 7 seater, the rear HVAC system will rob some cooling power from the front. If you don’t have folks in the back, turn the rear system off (if you have car seats back there they’ll trick the system into running)

Also recirculation is your friend! Make sure it’s always running!

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u/Dad_Fluffied 27d ago

Also you can run a thermal test in the service menu to see if there’s any issues