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The sunroof is a common problem, I had ghosts moving the sunroof in my Audi A4 too. If the headlight switch is similar and I believe it is, first remove the headlight switch assembly by pulling off the wide light lens. There are some screws in there and 2 spring clips that hold it in place. Remove the headlight switch.
There is an upside down spring touching a rheostat. Due to use and age, the spring wears out or it loses contact or shorts. Slightly bend the spring so that it's touching a different part of the contact.
The trunk lever thing - only thing I can think of is a bad solenoid or problem with the trunk lock disable next to the button, the ignition key slot. Or a bad contact there.
There is an upside down spring touching a rheostat. Due to use and age, the spring wears out or it loses contact or shorts. Slightly bend the spring so that it's touching a different part of the contact.
The trunk lever thing - only thing I can think of is a bad solenoid or problem with the trunk lock disable next to the button, the ignition key slot. Or a bad contact there.
