@Didntchaknow glad to hear it finally works again! 80 bucks sounds like a bargain! I'm also super busy since weeks (months?) with my work and havent made any progress with my 03' XC90. Stupid oil leak is preventing it from passing road safety check (TÜV here in germany). It's the seal between crank ...

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Today I got my head back from the shop. They had to remove 0.2mm because the head was twisted. Already ordered a new head gasket, previous one was 1.05 (2 holes), new one is 1.25mm. A real pity I have to roughen up this shiny machined surface for the gasket. This old head wont last forever tho due t...

I dont really understand the problem.
Why has the whole fuse panel need to be replaced? Is it burned up?

I would follow it down

Does it make any noise/sound when steering? After steering a few times from most left to most right, do you see any bubbles in your reservoir? Servo pumps last ages if taken care of properly. With the oil heating up, it changes its viscosity. A less viscous fluid may pass some seals. My guess is the...

0.3A or 0.6A is much for not pressing any buttons.
Can you try to follow the wire thats running the most current?

Negative should not be possible in this case, so maybe just the current clamp was flipped.
Just discard the minus.

Wherever the cable heats up, there is very little continuity leading to very high electrical resistance leading to heat. Or the cable is fine and the engine is seized, leading to an overloaded starter motor. First thing I would try is turning it over by hand! Making sure its free spinning. If just ...

changing the head gasket is not as easy.
Before firing it up, you should have tried to turn it over by hand (did you?).
Is there much resistance?
Much can go wrong here. Wrong timing is the worst case.

-unplugging the sunroof switch on the dash (not sure if this would be helpful at all) This switch seems to be 3/25 on the diagram. It is supplied by a different fuse (11/35). So no fault here I guess. I like the idea of the current clamp. I would probably use that in more applications that just thi...