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Old 09-25-2001, 10:00 AM
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G-Benz G-Benz is offline
Razorback Soccer Dad
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Tested voltage at the battery with the engine running this morning and it reads 17.5 volts!!!

So I had to leave the 300E at home and take the ML to work.

Unless some elves replaced all of my courtesy lights with halogen bulbs, it seems like a overvoltage problem.

Engine eletricals seems to be doing some sort of cyclical switching as the idle revs up, a click is heard and then the idle goes down, another click, idle goes back up, etc. etc...

I turned on the headlights which were extremely bright (again with the elves), then back to normal as the engine "click" was heard, matching the cycles occurring with the engine.

I will have to test the cells this evening, but I sure hope it's just the battery. It is a good quality unit and was purchased in the fall of 1999.
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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