rmmagow

The sensors are pretty simple and robust. I would presume they are telling you the pads are worn and respond accordingly. At the worst you go through the trouble to find the problem is with the sensor resolve the issue and have a set of spare pads and sensors for the job later.

I have yet to have a bum indication from the pad wear sensors. I have had them tell me a few hundred miles early in wet weather that the pads needed replacement, as when it was dry after the first time they lit up the dash light, the light stayed off for a few days of daily use. But it came back on and I was prepared. Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)