Hi, I just joined to contribute with my experience.
I have a 2014 Model S 85. A few weeks ago I got out of the car for a minute, when I looked back, the driver's door handle was extended halfway out, I pulled it but it did nothing, had to open my door from the inside entering the passenger side. I drove off and the handles did not retract. A few minutes later, noticed that also the control switch for the windows and mirrors wasn't working, it's light was off, none of the buttons worked, locking the car also wouldn't retract the mirrors, noticed rear driver side door handle stopped working also. A bit later that day, whenever I opened the driver door, the glass was going down but not back up when I closed the door, that kept happening until the window was fully down. I also noticed in the consumption graph that for some time it spiked to over 50,000 Wh/mi, shown in the picture attached; projected range was 0 miles with 40% charge but I was able to drive around just fine. Later that day I got home and was able to find fuse related to the driver side doors, it was blown, replacing the fuse made it blow immediately. Took apart driver's door panel and started unplugging everything: Door Control Unit, exterior door handle, door latch, window regulator motor, etc. Checked fuse again and it stopped blowing, I began to plug stuff back, and the fuse didn't blow again even with everything connected. The left front door handle was dead, not even a noise it made. I took apart rear door to test with that handle, plugged it in the front, and every function works but doesn't unlock the door when pulled, it doesn't release the latch. I swapped parts from rear door handle to the front one, I found that the front door handle module makes either handle stop working, but when I use the module from the rear handle, both handles extend and retract just fine, also extend when pushed, etc. Next I tried the Door Control Unit from the right side passenger door, nothing changed, even tried the door latch from the passenger door but the pins seem to be in different places and I assume that's why it didn't work. I also moved the grummet that covers the wiring going in the driver's door, inspected the wires, pulled a bit on them, I did not find any broken wires, also removed the door sill and inspected the wires there, didn't find anything there either. Going into service mode shows the drivers door handle as unknown, and the rear driver side handle shows the generation, but there is no handle connected in the back, after several restarts pushing the scroll wheels and checking 24h later, it seems to still show generation on the back and unknown in front, no door handle connected to either door. I had an active alert in service mode that wasn't there before (ESP_d133_acmVsSignalPlaus), it went away at some point after plugging stuff back in the driver's door. Currently everything works except opening my door when pulling the front left door handle, and when I walk up to the car from the RIGHT side it doesn't unlock, I have to push the right door handle/double tap the key fob and then the mirrors extend and the door handles too, that was not the case before all this happened, I'm not sure if I changed that setting while testing, but when I walk up to the car from the left side, the mirrors extend automatically as they did before.