So starting to think it's 100% suspension related. The power drop is the first noticeable symptom if I don't have 4x4 display up however passenger side front wheel does start to act up sitting around 20mm lower than it should.
When all the lights flag up and I restart car it asks me to select ride height. The suspension then levels put and I'm good for a few more days until it happens again. So appears when the suspension falls out of calibration it throws off all these lights and errors.
My drive looks pretty flat yo yhe eye but when I measure centre cap to wheel arch is get yhe following, which tells me its either out if whack or my drive is not flat at all.
Driver rear 495
Passenger rear 477
Driver front 477
Passenger front 457
Struggling to find a flat surface to do a calibration. Even cat parks aren't flat around here.