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  #1  
Old 04-19-2008, 01:43 AM
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84 300SD Battery Drain -- #15 Fuse

I am trying to figure out what might be causing this. I have a battery drain and I have isolated the #15 fuse using a 12 volt light test. I have tested and disconnected everything that is listed on the fuse box (interior and door lights, trunk lights, seatbelt handover arm, antenna, vanity mirror lights) and the drain is still occurring. If I take out the fuse, the drain stops. The fuse does not blow and the car starts when jumped. The battery seems to hold power overnight when not hooked up.

What could I be missing here?

Any insight would be appreciated.

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  #2  
Old 04-19-2008, 01:45 AM
BoomInTheTrunk's Avatar
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have you unplugged the antenna it might be a internal short in the motor.
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  #3  
Old 04-19-2008, 02:13 AM
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Yes, I have unpluged everything!

and still have the drain. Heard that the motors on the antenna were a common cause of battery drain. i disconnected that and still had the drain. There is also a "warning monitor term. 5" but I have no idea where that is so I haven't checked it.
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Old 04-19-2008, 09:06 AM
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Location: Blue Point, NY
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I'll wager that the problem is either in the power seats or the power antenna.

Are you sure you unplugged all plugs to both front seats?

Are you sure you disconnected power to the antenna?
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  #5  
Old 04-19-2008, 09:15 AM
minimike
 
Join Date: Oct 2007
Location: LI, NY
Posts: 320
you might be able to find the drain with a meter and check voltage to each plug, ie: at seats, antenna, etc. Maybe a pinched or chaffed wire is grounding out.

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