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Old 04-23-2002, 08:19 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The coolant level is an "on-off" circuit & the washer circuit is a variable resistance circuit. SO when the coolant is full the instrument cluster sees a the variable resistance from the w/s reservoir & knows all is well, HOWEVER if either the coolant is low OR the washer sensor goes OPEN circuit then the coolant light comes ON.
You need MB part number 210-540-00-45!
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