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Old 02-23-2008, 09:53 PM
scott19_68 scott19_68 is offline
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Join Date: Apr 2006
Location: North Shore, MA
Posts: 200
E300/W210: Battery drain - help!

Driving home last week and all of a sudden a 'brake pad wear' warning was displayed on the console-thing - I knew my brakes were in need of a service so I thought that it was not unexpected. What I was not expecting was the slew of BAS/ASR warnings displayed about 5 minutes later. I was only a few miles from home at this point - turning up the street my radio turned off and I was stuck in 3rd gear until I pulled into my garage.

The next morning I tried to start it up but the battery did not have enough juice to turn over the engine - I figured that would explain the weird electrical issues the night before. Since my battery is less than a two years old, I thought this issue was just a bad alternator - but after a installing a rebuilt one there has been no change. The battery voltage while the engine is idling is about 10.5 volts which is obviously not correct.

After reading as many old posts as I could find related to my issues, I have performed the following with no luck:

- Installed rebuilt alternator (as mentioned above)
- Cleaned battery terminals & chassis grounding point
- Disassembled and cleaned power distribution connector (X12/3)
- Disassembled and cleaned grounding poiints in engine compartment

Any help is greatly appreciated!
__________________
Scott C.

2006 E320 CDI (120k miles)
FOR SALE: 1998 E300 Turbo Diesel - Black w/Tan Leather - Euro delivery (236k miles)
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