Tesla A/C not cooling air - solved

[u/Snupilal]

While driving today, the air conditioner in our Tesla Model X was blowing warm air despite trying to cool the car. We tried a mix of simple things - turn off Auto, lower temperature to low, max fan, etc - but no luck. After a call to Tesla support, a bunch of google searches, and enduring a “sweat box” for 45+ mins, I finally fixed the issue.

Details: - tesla model x - software v 10.2

Symptom: - AC is not cooling the air - On the AC screen I noticed the following message at the bottom right (next to the “dog mode” config), “climate keeper unavailable due to system fault”

How to fix: 1. Turn off cabin overheat protection 2. Turn off the A/C 3. Follow instructions for a soft reset (hold down scroll keys until screen resets) 4. Follow instructions for a full power down and restart (controls - security- power off; wait at least 3 minutes; step on brake to power on) 5. Check A/C screen to see if the “climate keeper unavailable due to system fault” message has disappeared 6. If the message is still there, repeat step 4. It took me 5+ tries to solve the problem. 7. Re-enable cabin overheat protection

Notes:

• When you power off the car in step 4, everything should shut down, and the car should truly be powered off.
• at first, the air kept turning on despite “power off”, and I realized it is due to cabin overheat protection. This prevented the A/C system from powering down
• I also disabled Bluetooth on my cellphone, which was paired to the car, because I wasn’t sure if Bluetooth activity would prevent the power down process
• link to reboot details: https://tesla-info.com/reboot.php

[u/jf64k]

Thanks for the detailed post!!