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2001 Turbo- Parasitic Drain?

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Guys, this site is a bit of a double edged sword for me.  One on side, I love to post and get feedback from the most knowledgeable group on the internet.  On the other, it usually means that I have a problem.


I have an 01 Turbo that has a Rennline Kill Switch.  If I don't use this switch, my battery goes dead in a couple of days.  Well, I should say sometimes it does, sometimes it does not.  There are days when I stop for an errand and come out after 15 minutes and my car turns over, pauses for a 3-4 seconds, then turns over.  


I tested both the Volts and Amps tonight with my Bosch Multi.  12.63V across the battery.  .08 amps (with the negative terminal disconnected) between the negative lead and negative post.  If I turn on the Rennline- amps drop to 0.


Beyond perplexing.  


Anyone ever experience this?  Thoughts?


There are times when I get weird electrical errors- like PSM or ABS lights come on, etc., but then stay off once I use the Rennline.


Is the kill switch okay to use daily- any problems with doing so.


I will check my volts on the battery in the AM to see where I am relative to the 12.63 tonight.

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  • Admin

Did you try a search (before you posted this 3 times)?

I think not.


40-60 ma is normal - anything else means you have a drain.

Put an amp meter in series with the battery and slowly pull fuses until you find the circuit with the large drain.

Report back here which fuse.

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Loren, thanks for the reply.  Quite honestly, it did not appear to me that my initial post (or 2) was successful.  I apologize for the repeated posting.  I do appreciate your role on this board and I will do what you suggest and report back to the group.


Thanks again.

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Loren- I am shooting for a single post/reply.  


Waited about 45 minutes for the car to quietly shut down.  Still pulling about .08 amps- obviously high.  Pulled every fuse without much response- in one case it dropped to .7 which was better, but not where we need it to be.  I believe the previous owner has an outlet wired behind the radio for what looked like an external antenna- you could literally plug a car phone charger into it.  Nothing is plugged in right now- but would this be a source.  Would the Rennline draw power?  Again, as soon as I shut off the kill switch, the amps from from .08 to .00.  


Still perplexed- anything else you can think of?


I will continue to search forum tonight for answers...

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Well... if you have third party things on the car they may or may not be wired through the cars fused power system.

In that case you need to do the same - disconnect them one at a time and see what the amp meter says.

In my experience 9 times out 10 it is a third party installation. Having seen a friends 911 burn because of radio install was the worst I have seen.

So what ever the cause you need find it and fix it or remove the third party device (IMHO of course).

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