I think the first Mercedes to get sensors on all four corners was the W210 chassis.

I know that the W124's only had them on the front.

You'll know your rear pads are gone when you hear a screeching noise.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".