The easy part of this problem is knowing what it is, the difficult part is finding where it's shorting out. With the meters of wire and harness it would be discouraging thinking about it. Knowing VW took a lot of time engineering to avoid this simple problems, there are conditions that couldn't prevent this.
First off, have you recently installed an aftermarket part that hooks up to the wiring system e.g. radio, gauges, gps or other electronic accessory? Something added that needed a harness moved to make it fit or needed splicing a wire to power it up?
There are times when doing electrical work, the person doing it doesn't realize while stripping insulation from new wire that a strand of wire fell in a switch, fuse terminal causing a short in it's circuit.
You'd need to clean the fuse area with a clean paint brush to dust off any metal debris. Another way is by simply using a digital VOM with continuity tone to single out which component is causing it to blow the fuse.
Another suggestion is use a VAG 1552 scan tool or equivalent. This will also help pinpoint which component to look at and narrow the search area.
If you're a DIY kind of person and want to know how your vehicle works, wanting to get a little more involved. You'll need a Windows based laptop and purchase a
ROSS-Tech software by clicking on the address.
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