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On 25 Jun 2006 at 18:02, Nico Tewinkel wrote: > I still very clearly remember Jim talking about how both his brake > sensor switches failed at the same time, leaving him with no brake > lights and no warning light to tell him about it. > Well, the same just happened to me! It's not that they actually fail at the same time, it's that they are redundant so everything appears to be working fine until the second one fails. All we know now is that both of yours have failed. > I had noticed the warning light coming on a month or so ago, but it > went out the next time I used it, so I assumed (hoped) it was a > glitch. But I guess the second switch failed shortly after the first. It probably WAS a glitch. The usual failure mode doesn't cause any reaction from the warning light. > So that means I have to go underneath again to replace that one thing > I didn't replace when I replaced the brake system last year! ;-) > Just to double check - since these are on the master cylinder, I > assume I have to bleed the entire system again, right? You really don't have to. Get all your parts down there and ready to go. Have the replacement in your hand as the old one comes out, and tip the new one into position so that the fluid running out bleeds any bubble out the top of the port as that part of the nipple goes in last. Tighten and you're done. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~