2000 S500 electrical problem help
Last edited by Robson921; Jan 4, 2019 at 08:06 PM.


Many of the functions that you have lost are run thru the left DCM (Door Control Module).


"The battery dies instantly will not charge..."
Does this mean that you can't charge the battery with a charger? Or that you can start the engine (how?) and the alternator doesn't charge the battery? Do you mean that if you charge the battery, it goes dead instantly when the charger is disconnected?
"...when I finally got out of park ..."
Does this mean that you got the battery functional and got the engine running, and then the shift lever will not allow you to shift into Drive or Reverse?
"...the fan run continuously ..."
Do you mean the engine fan or the HVAC blower? So you have the engine running and the engine fan runs at high speed? It is normal for the fan to run if the AC is on, which it usually is.
"...but now it doesn't turn on anymore and car overheats ..."
So now you can drive the car (did all of the above problems just go away?), and the engine fan no longer functions so the engine overheats? How quickly? Sitting still? In traffic? At highway speed?
"... now the front end of the car is fully lowered when I start it the front does not raise ..."
How long did you let the engine run?
Punctuation would help a lot. A chronological description of the problems would help a lot. How many problems are there?
Plug it in and charge that battery overnight.
Try again to start the car. Every symptom you've got is a dead battery symptom. You haven't said what you're trying to charge this with, but whatever it is, isn't working. You still have a dead battery.
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Use an AGM of equivalent size/capacity as the original battery.
Charge it fully before starting the car.





