My 98 Jetta TDI rear brakes started humming this summer. It's really annoying. The shop says nothing is wrong but that still doesn't make it less annoying.
Can anyone offer a solution to make them quiet again?
The problem started a couple of weeks after the brake fluid was replaced on routine maintenance (maybe a coincidence, I don't know). The brakes always hum on the first few applications of the brake and then are quiet until after the car sits for a long time (usually overnight). I had the rear wheel bearings repacked on routine maintenance but it had no effect. It seems slightly worse in cold weather but doesn't seem linked to wet weather.
I live in Portland OR. The brakes are original with 50% left. The car has 65000 miles.
Any ideas?
JJS