Purchase a brake fluid tester for $13s and see what it says.
https://a.co/d/iAflnIW
For a ac flush….. Just HUH you don’t service the ac or flush it unless you have an issue. It’s a sealed system.
that’s weird your truck should work with trailer side veiw.
https://www.f150lightningforum.com/forum/threads/f150-lightning-forscan-thread-version-2.23634/
I had taken my truck in for a Rotation after 8,000 miles on my K02s and the wear was even on all 4 tires the girl was really confused and said that its really impressive.