Quote:
Originally Posted by 97 SL320
12 ma won't pull a good battery down to 9 V in 4 days. Use a clamp on amp meter and probe around. Check the alternator to battery wire for current flow, you might have a positive diode starting to fail. I chased a similar problem on my Ranger of interment battery drain, changing the alt fixed it ( changing the regulator didn't )
Also, I've had electrolytic capacitors leak causing electronic circuits to turn on.
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I agree 12ma (or 25ma) shouldn't be enough to drain the battery. I have a clamp on but it is tough to test every wire without ripping everything apart (like the door wiring harness for example). Any advice on that aspect?
I think it must be related to something other than alternator since it is causing interior equipment to malfunction (dome lamp won't go out, radio amplifier won't turn on, door locks don't work). Then after I pulled the fuses and replace them, magically these things start working again.
Again, the really odd behavior here is that there is some interaction between fuse 9 and fuse C. With fuse C removed, fuse 9 pulls 300ma, and only quits after I pull both relay A (power seat relay) and F (convenience relay). Then somehow it goes back to normal after putting the relays and fuses back? Does this sound like a bad relay or a short somewhere else?