With spring arriving in the Midwest and the warmer temperatures, I've noticed that my 2018 Model 3 is experiencing issues keeping the cabin cool over a few drives in the last 3 weeks. During the past two summers I've kept the AC around 70-72F in the summer with no issues. This year I'm having to turn it down to 66F when it's 75F and partly cloudy outside. I don't think I've changed
I run ScanMyTesla so I checked the HVAC data (see attachments). Even with the above conditions (75F exterior, 66F HVAC setting) I still see there is power to the PTC heater. The air is somewhat cool but not super cold. The fan speed is also low and the AC compressors duty cycle is very low (10%) with no AC fan running. When I turn the HVAC to 'LO' it blows fast and very cold air.
I haven't gone to a shop to have the AC pressures checked, but based on the above observations I'm thinking there is a sensor issue or a SW update has broke HVAC. Has anyone experienced this behavior before? I'd open a service inquiry with Tesla but I'm out of warranty.
I run ScanMyTesla so I checked the HVAC data (see attachments). Even with the above conditions (75F exterior, 66F HVAC setting) I still see there is power to the PTC heater. The air is somewhat cool but not super cold. The fan speed is also low and the AC compressors duty cycle is very low (10%) with no AC fan running. When I turn the HVAC to 'LO' it blows fast and very cold air.
I haven't gone to a shop to have the AC pressures checked, but based on the above observations I'm thinking there is a sensor issue or a SW update has broke HVAC. Has anyone experienced this behavior before? I'd open a service inquiry with Tesla but I'm out of warranty.