I just got my 24 Tesla Y - love the car - HATE the driver seat. When I drive I get stiff neck, shoulders and sore back. 6'2" and 240lbs the lumbar support is too low. no upper back support and the non-adjustable head rest pushes my head uncomfortable forward. I've never had a problem like this in other cards I've driven. I think I need to give my car back to Tesla. Not sure show long I can stand this. Anyone else have this problem? Any solutions?
It took me weeks to figure out I had an issue with the driver's seat after purchase. And another few weeks of mucking around trying different things until I managed to get myself to a happy place. That said, I did a minor modification to the bottom seat cushion and if you're desperate, handy, and want to try something fairly low cost and non-invasive (easy to reverse) check this out and see if it's worth trying for you.
Uncomfortable Front Seat(s) / Thigh Bolster Mod
Scroll through the thread from there where I gave someone the dimensions I used and tried to explain how I installed it.
I'm not saying it's a smoking gun or will work for everyone, but it saved me. Still not the most comfortable seat I've ever had but its totally manageable now - again, for me. I have had days where I've been in the car for 4-5 hrs total and single trips of 2.5-3 hrs and felt fine vs being sore and uncomfortable after 20 minutes in the seat before.
That said, my issues were primarily in my hips and my legs and not my back. So it may not help, but the pad effectively lifts the bottom of the chair a bit, and may help fix hip position, and thus may help the back posture.
Also, you may not be used to the somewhat forward leaning headrest (vs other cars I've had) yet. That may be contributing to neck / shoulder discomfort if you're leaning forward and don't realize it. Try tilting your backrest back a bit so your head and neck are vertical with your shoulders when relaxed (vs hanging in front of them). Doesn't have to be a lot further back, may just be a tap or 2 of the recline button. I did this and it also helped. After doing this I also had to slide the seat bottom forward a bit to keep arm length to wheel and controls after doing so because of my short t-rex arms.
Just trying to help you through the journey I took. After getting the bottom pad in I was able to dial in the seat better with only minor temporary tweaks needed from time to time. I'm at 1 yr ownership and about to hit 30k kms and the above made the difference between me approaching the thoughts of ditching a brand new car and being happy with it as a daily driver. I initially intended to take it out after installing it like that to try a second layer of the softer foam on top but I never did for fear of going backwards in comfort.