Hi, I've about the same problem on a '03 passat diesel. I'm about to check out the problem and found that a lot of water is trapped in the air intake plenum as the drain holes in the compartment is full of dirt. Might be the same in your case, making a small amount of water is sucked into the brake booster, causing the mechanical parts to freeze. Lift the cover over the air plenum and check for water present there.
Regards, Jens, Sweden
Well sounds to me like you might have some moisture in the fluid which can cause the breaks to fail. Have your break system flushed totally out and refilled. Brake fluid is very touchy. If you leave brand new brake fluid bottle open for a few days it will draw moisture from the air and ruin the fluid.
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The system was flushed with new brake fluid when the problem first occurred, but made no difference.
Jensa,
Thanks for your reply,
This was exactly the problem. I have since found out that this is quite a common problem & is subject to a recall on this model
the only thing I can say, is that the mechanics at VW Monaco had never heard of this problem (surprise!!! it never freezes in Monaco) & they are supposed to be qualified engieers specialised in in this field. Thanks again,
David.
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