Me too.. the squeaky sound started after I had my front brake pads and rotor
done... i guess it was coincidence that it started squeaking whenever i make
a right or left turn... it sounded like an arthritic car...
anyways, i brought my car back and it turns out that the joint that connects
the front steering column rubber has dried up and thus required a new one
this was for my 190E '93 2.3L MB...
Check the thin metal backing plate behind the rotor. Just cured a squeak in
the front end of my Porsche by tweaking the plate just a bit with a
screwdriver. Took a stethoscope and someone bouncing on the bumper to track
down the source - which turned out to be a small point of contact at the
bottom of the plate with a suspension part.
If you can duplicate the squeak while the car is stationary, it shouldn't be
too hard to track down.
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