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  #1  
Old 01-19-2007, 03:37 PM
JenTay's Avatar
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Posts: 555
Tough electrical problem 350sdl

Problem: excessive battery drain when the SRS and ABS dummy lights come on intermittently when the car is running. if the lights do not come on, there is no battery drain and the car starts up fine. the car is a 1990 350sdl

What's been done: I have receipts for
-new bosch alternator
-new OVP relay
-new autozone battery
-new glow plug relay

All within the past 3 months and correctly installed .it still has the problem.

Please help me diagnose this problem. I would hate to think i got suckered when i bought this car.

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90 350sdl
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  #2  
Old 01-19-2007, 04:52 PM
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So if the lights pop on during driving, then you'll have the drain when you turn it off?

I'd unplug the SRS module and go from there. It's on the passenger side, below the carpet. Be sure to disconnect battery prior to unplugging it. This will set off the dash SRS lamp but should eliminate any drain it could put on the car when the key is off.
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I'm not a doctor, but I'll have a look.

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Old 01-19-2007, 05:50 PM
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jen

did you do any research on this car before you bought it?
until the problem is found, you could get some one to show you how to disconnect the + of battery if the car is to set for a while(long enough for the car not to start)
larry perkins
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  #4  
Old 01-19-2007, 08:54 PM
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Join Date: Aug 2006
Location: Wilmington, NC
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Quote:
Originally Posted by JenTay View Post
Please help me diagnose this problem. I would hate to think i got suckered when i bought this car.
Quote:
Originally Posted by JenTay View Post
I just acquired a '90 sdl from a coworker for $2000.

The biggest thing it needs is a paintjob. Also, the radio turns on but no sound comes out from the speakers.

Nothing drives like a benz.
'90SDL for $2000 is probably going to have some problems. Don't worry, there's lots of folks here with experience who can help you with it.

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