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SAAB 9-3 Battery sometimes goes completely dead overnight - Mechanic discovered but could not isolate the intermittent drain before it went away... this was last week and it has not happened again - Y

125k Miles - runs fine once its going and electrics seem perfect....

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  • Expert
  • 318 Answers

Could be something as simple as a boot light stayingon

Posted on Nov 28, 2012

  • donald Nov 28, 2012

    We thought of that - the bulb was already removed - weird? perhaps the previous owner also had issues? ...Thanks for the suggestion - I have only owned the car for 1 month...

  • Jonah Oneal Nov 28, 2012

    how old is battery.check battery cables look corrosion clean battery terminals and cables, if battery is old it will loose cranking amps cold weather will drain power out of battery. have battery load test at a auto parts store.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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The Machine
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SOURCE: Car Battery draining over night

Something is shorted and it could be very difficult to find sometimes. It could be something as simple as a button being pressed when it shouldn't turning on a light or feature that runs all the time, but in a 2001 that is unlikely as it should turn off all lights after a certain period of time. It could be something in the radio. What I suggest is to pull one fuse at a time for accessories, check your manual for what each fuse powers. If the battery still drains with that fuse out then put it back in a pull another. When you find the fuse that allows your battery to keep it's charge then you will have a much smaller field of offending components.

For example, if you pull the fuse that powers the radio and heater, and the battery keeps it's charge then you know it is either the heater or radio causing your problem.

This can take a few weeks to do completly but won't cost you a penny to do.

Posted on Jun 09, 2008

motor1258
  • 6674 Answers

SOURCE: electrical problems - something draining battery

First of all, one of the easiest & cheapest ways to find a draw in the system, if you don't have a clamp on style amp-meter, is with a 12volt test light that costs about $5-$10 at parts stores or hardware stores. You remove positive (+) cable from battery, and simply attach test light in between the battery cable & battery + post. Be careful neither end touches metal obviously. Anytime the test light is lit, you have a draw. If light is nice & bright, it's a fairly good draw, when dim, slight draw. When light goes out, no draw. Now start pulling and re-installing fuses. If you pull a fuse and bright light goes out, you've isolated the circuit.. I usually make sure I have notes or whatever is needed to insure I put fuses back where they should be, then I pull radio fuse and leave it out, as it will cause a constant draw for memory, and sometimes any accessory fuses such as lighter, or power socket for 12v chargers etc. With those out of the way, start pulling and watch light, if no change, put it back in. When I run into a real stumper, I make necessary notes if needed as before, and pull them all out, and light should be off. Now I start putting them in 1 at a time, and watch the light, when it comes on, I note that circuit, pull it back out, and do same with the rest. When your done you will have notes on every circuit that is causing a draw on your battery when sitting. Before you start, take your test light, go to all the fuses and touch little tips sticking out at end of fuses on both side to test for power, if only power on one side, that is a circuit that would not cause a draw when sitting & vehicle off. That would only be powered when key on, headlights on for example, so it doesn't come into play here. Leave those in if you want & it doesn't confuse you. Yes a little time consumming, but hey, think of the learning experience, and a simple test light, is something that every car owner should have anyway. Next time your wondering which fuse blew, you have a test light to tell you. As far as the heated seat goes, if there is a short there, and it's causing a lot of draw, pulling fuse should eliminate & confirm that.

Posted on Mar 07, 2009

wilsodfarm
  • 986 Answers

SOURCE: battery goes dead overnight on four occasions

I dont think the dealer knew what he was doing ,your altenator has 6 diodes inside it and the are a one way check valve for current,If one fails no light will come on because it is still charging,But will drain your battery,I hope this helps you and have a merry x mas and please dont forget to vote on this solution

Posted on Dec 19, 2009

  • 523 Answers

SOURCE: 1999 Grand Caravan 87000 miles.The dash board goes dead.

Experienced the same thing with my 99 Voyager, ABS light would then come on too. I expect this will do it for you. If you check my profile you'll se I have helped several others with this same isse

There has been issues with the solder joints on the PIN connection to the gauge cluster. The issue being that over time thru vibration and such one of these solder joints will fail (happened on or 1999) you can repair this though. You will have to remove all of the trim from around the driver's side dash board, this will include the trim towards the center of the dash. Once these pieces are remove you'll need to remove the gauge panel (I believe (4) allen head screws) carefully bring the panel and release the wire clip from it. Looking at the back of the panel, where the plug was, carefully with plenty of light look for one of the pins (or more) to have a failed solder joint. It will be very faint however the failed joint will be a fine dark line around the pin. To correct use a small soldering iron and reheat this solder until it wants to flow, let it cool and reassemble. Take your time and this is an easy fix!
I hope this may have helped,
Tom

Posted on Apr 12, 2010

  • 132 Answers

SOURCE: battery keeps going dead. Brand new battery i

something draining the battery .check blower motor sometimes keeps running even when indicating it is off .remove battery terminal and tap against the terminal to see if there any large sparks.if they are . remove fuses one by one as u test till the spark is not there .find out what links are used on that link and disconect one by one when the fuse is on and test if the large spark is still there

Posted on Jul 26, 2010

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