Quote:
Originally Posted by dauber
My 99 606 has been making a groaning noise when you turn the headlights on at idle, it gets louder when you turn the fogs on or turn the wheel. When you shut the lights off the groaning noise goes away. I have to assume the alternator pulley or bearings are going bad but I wanted to see if someone else has been down this road.
I have had no charging issues and the car runs fine besides this annoying noise.
Motor mounts replace 6 months ago, car has 189k
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I had a similar problem and it caused a failure of the belt tensioner. Turned out to be the alternator - so the sooner you address the issue with the alternator the cheaper.
Jim
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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)
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