Summer is hot, no shock there. But I’m wondering if anyone knows the theory of operation on the non-heat-pump dual AC system in the Model X.
I’m still experiencing higher than expected power usage, with a second MX now that I can compare against - also a dual AC unit 2016, it’s a 6 seater. Highway driving on that one is under 400 wh/mi where mine is STILL consistently closer to 500 wh/mi. Not much difference based on speed. Twice in the last week, I have been cut down to “AC performance reduced” THC_u0016 and the compressor disabled while supercharging. This latest time it almost immediately came up with the u0005 code (vehicle systems being cooled) right after plugging in. When the AC is running, it is FROSTY cold, yet I can’t really hear the compressor running - which says it is possibly at low speed - but the forward fan is SCREAMING all the time even when the temperature is moderate AND the AC fan speed and demand are both very low.
Ju7 in the same unit? Virtual support suggested that they were in the same module, and that the gas would need evacuation to change this (that’s no issue for me) but I don’t want to just throw parts at it.
The car HAS reduced / turned off the compressor when I have the interior temp set warmer (you know how you can tell when the air just seems “stale”) several times, but no errors are presented. Even now, cruising on flat land at 80-85mph with no headwind, the AC is possibly colder than I’d like (it is set at 70 with ambient at 85) and I’m at 500 wh/mi. Something is STILL running continuously / drawing a fair amount of power, and I don’t know where to look.
It isn’t the air suspension - that compressor is unplugged right now b/c of an air leak between the tank and the valve block. The suspension hasn’t leaked down in over 500 miles either which is refreshing!
Just plugged into another supercharger and IMMEDIATELY the AC compressor was cut off (it’s getting dark and the outside temps are somewhat more moderate now) and I got the THC_u0005 systems being cooled message. It didn’t even have time to start heating up from the supercharging before it cut off the AC. The front fan is STILL running full speed, and the compressor is only humming quietly, way less than when the AC is at full demand - pressure is 60 psi on the low side.
I’m still experiencing higher than expected power usage, with a second MX now that I can compare against - also a dual AC unit 2016, it’s a 6 seater. Highway driving on that one is under 400 wh/mi where mine is STILL consistently closer to 500 wh/mi. Not much difference based on speed. Twice in the last week, I have been cut down to “AC performance reduced” THC_u0016 and the compressor disabled while supercharging. This latest time it almost immediately came up with the u0005 code (vehicle systems being cooled) right after plugging in. When the AC is running, it is FROSTY cold, yet I can’t really hear the compressor running - which says it is possibly at low speed - but the forward fan is SCREAMING all the time even when the temperature is moderate AND the AC fan speed and demand are both very low.
Ju7 in the same unit? Virtual support suggested that they were in the same module, and that the gas would need evacuation to change this (that’s no issue for me) but I don’t want to just throw parts at it.
The car HAS reduced / turned off the compressor when I have the interior temp set warmer (you know how you can tell when the air just seems “stale”) several times, but no errors are presented. Even now, cruising on flat land at 80-85mph with no headwind, the AC is possibly colder than I’d like (it is set at 70 with ambient at 85) and I’m at 500 wh/mi. Something is STILL running continuously / drawing a fair amount of power, and I don’t know where to look.
It isn’t the air suspension - that compressor is unplugged right now b/c of an air leak between the tank and the valve block. The suspension hasn’t leaked down in over 500 miles either which is refreshing!
Just plugged into another supercharger and IMMEDIATELY the AC compressor was cut off (it’s getting dark and the outside temps are somewhat more moderate now) and I got the THC_u0005 systems being cooled message. It didn’t even have time to start heating up from the supercharging before it cut off the AC. The front fan is STILL running full speed, and the compressor is only humming quietly, way less than when the AC is at full demand - pressure is 60 psi on the low side.
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