Hi! I have a 2004 Fabia vRS. It has a couple of annoying niggles. Niggle 1 The heated seat controls no longer cause much heat to be produced and the temperature dial turned all the way down no longer produces the full chill with AC and, likewise turning it all the way up doesn't produce the full amount of heat. As far as I can tell, both these issues started at the same time so I'm wondering if, like when fan position 1 stopped working, this is a resistor issue? If so, I'm wondering if this is something I can fix myself and how I would do it or am I better taking it the dealers? To give a bit of context of my abilities, I can change a car HiFi and take apart and rebuild a computer successfully, I start getting a bit unsure when I need to do soldering though. Niggle 2 The middle 3 elements on the heated rear window don't work, and nor does the light in the boot. Except, about 3% of the time they do. If one works, so does the other, so I'm guessing there's a bit of wiring somewhere that needs replacing. Again, should I attempt this or take it to the dealers? Thanks!