We just did a round trip from Tucson to San Fransisco (via LA) last week with our Model X. On our way back on Sunday, during the record setting temperatures, we had no problems in California until we arrived at the 118º temperatures as we crossed back to the AZ border. With about 60 miles of remaining range and 2 miles from the Quartzsite Supercharger, the A/C turned off. Luckily we didn't suffer much. We tried to stay in the car during supercharging, but the A/C was blowing hot air (we then went into Carl's Jr.). After the car had sufficient range, we continued on our trip, but it took a good 10 minutes before the A/C was blowing any cold air. With about 40 miles of range as we approached the Buckeye Supercharger, the A/C performance was starting to decline a bit. The car again would not give us any A/C while supercharging. After the car was charged enough to go to the Casa Grande Supercharger we headed out. The A/C was fine after this and when charging at Casa Grande.
Most of the time, we got the following message when the A/C was reduced of blowing hot air:
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