Kamuela said:Excellent write up.
I did this about a year ago. For US market cars, you have to remove the knee airbag, which complicates it a bit, adds some time. Also, they're socket heads, not torx, in the US, so a longish 6 mm allen wrench is the thing to use. Figure on an hour, maybe less, allowing for plenty of time for the airbag capacitor to discharge. If you experiment like I did, you an always leave the airbag off and reset the light later. You guys in the UK have an easier time of this.
The German web site where this is explored in tedious detail seems to indicate that the adjustment is pretty tolerant, once you've gotten it out of a binding condition, which was my experience too. Some of those guys are a few years into this repair, without any recurring problems, so I'd say it's permanent.
I did try the drill-and-grease "fix" first. Waste of time. might have made it a tiny bit smoother, but if I had it to do all over, I wouldn't.
Just for info: UK cars don't have knee airbags and they are fitted with Torx bolts, to avoid any confusion.