sadasdas

Hello, I am a newbie and I own a 1997 993 it is the third time my battery drains out. It takes about 6 days to drain out. I was wondering if anyone has had this problem or knows where the problem could be coming from.

Steve Weiner-Rennsport Systems

Benny,

Assuming that the battery is in good shape to being with (less than 4 years old) and the alternator/voltage regulator are both functioning properly (you didn't say how many miles are on your new car), I would begin by measuring current draws at the battery and removing fuses, replacing one at a time, to find the culprit.

troos

You're not leaving the key in the ignition, are you.

NC TRACKRAT

Steve's right. Usually, the biggest (and simplest) culprits are the trunk, rear deck or glove compartment light. Try this to check: Rig up a 12v. test light with long leads and small alligator clips on the ends. Remove your trunk light bulb and clip a lead to each contact so that your test light is on. Close the trunk lid with the test light on the outside and wait a few minutes for the light to go out. If it doesn't, you need to adjust the switch contact which is a part of the latch assembly.

NP993

If you have an aftermarket stereo or alarm system, and none of the other stuff checks out, that's the next place to look...

Arena993

Cool diag solution. I am saving this one.

Mike

sadasdas

No I am not leaving the key in the ignition I wish I it were that simple.

sadasdas

The battery was replaced this summer and the car has 70,000 miles. I will take your advice and give it a try get back to you when I am done.
THANKS
BB

sadasdas

I do have both after market hope that isn't problem.
Thanks for taking the time appreciate it.
BB

sadasdas

Thanks
BB

DocTock993

IIRC another Rennlister had this problem and through some diagnostics figured out that there is LESS draw on the battery if you do the counter-intuitive move and always turn the alarm ON (even if parked in your locked garage at night).

friar93

i had this problem, it was the light in the boot/trunk.

BTW, I didnt know you could adjust it....I just took the bulb out and use a trickle charger for any period over 2-3 days it sits.

NP993

There must still be something wrong. For comparison's sake, I was overseas for 10 weeks this summer. I left the car locked in my garage, no trickle charger, no nothing. Came home and it fired right up. It's actually sort of amazing that the battery can keep those two red led's flashing, 24/7 for over two months without losing its charge.

NC TRACKRAT

If you want to fix it, take off the black plastic cover at the base of the trunk and you'll see that there's a tab which, when depressed by the lock, should shut off the light. If it doesn't, adjust it so it will.

trojanman

I went through this diagnosis several months ago and found that my stock CDR 210 radio was drawing significant current with the key out and everything off. I ended up replacing the stock unit with an ipod-ready aftermarket Alpine and it completely solved the problem.

As I understand it, the other area that can cause this draw is the CCU fan.

Good luck!