My 2024 has the auto seats(did it one or two times before I adjusted it all the way back) but not the steering wheel and it has heated mirror but no squiggly lines and yes when you turn on rear defrost it activates the mirrors.
More Military off the shelf vehicles. Basically a stock vehicle painted olive drab and some military parts. We had the same thing when I was in the Canadian Military but it was built on a Chevy Silverado platform with a diesel engine, Those things were friggin torquey.
Here is what's in the manual.
TRANSFER CASE FLUID
CAPACITY AND
SPECIFICATION
Use fluid that meets the defined
specification and viscosity grade.
If you do not use fluid that meets the
defined specification and viscosity grade,
it could result in:
• Component damage that your vehicle
warranty...
That one comes up on the GPS about 20-30 seconds after you start it, doesn't do it all the time and it disappears in about 10 seconds if you don't acknowledge it.