Question about Volkswagen Golf

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I have a parasitic draw/drain of about 4 amps on my 2003 Golf 2.0L. No lights are on inside, I hooked up an amp meter and took out each fuse individually while watching the meter - nothing happened. AC doesn't work, and fan has vibrations because of a blade crack, this happened last week. CAA came and I replaced my battery, then drove 1100km, left the car over night and it was dead enough that it wouldn't start.

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Do you have any aftermarket stereo equipment installed in the vehicle or any other aftermarket stuff. If no then I would check the alternator. Sometimes the regulators go bad and they lock the field control on in the alternator. The alternator will still charge when this happens but will drain the battery when the alternator isn't turning.

Posted on Jun 03, 2010

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Posted on Jan 02, 2017

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2003 Tahoe has short drawing 12 amps


You put amp meter in series with negative cable not positive . c Improved Methods to Find Parasitic Draw Battery Drains Overnight

Your vehicle has a number of control modules onboard - PCM/ECM - BCM - ABS - air bag module . Maybe more ! One of these modules may not be powering down , going to sleep etc... . It doesn't have to be a short . A light could be on too . Using Voltage Drop To Find Key off Battery Drains

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I seem to have a bad ground wire that drains the battery sometimes,how do i locate the ground wire.This only happens when I first start it and drive,it sits and recharges itself back up.


Looks like you have a "parasitic current draw" not likely the bad ground. Use an Amp meter, set it on 10 amp setting, shut off everything inside the car, make sure nothing is plugged in in any power outlets. Shut all the doors. Remove the battery positive terminal and hook up the amp meter between the positive battery terminal and battery positive cable. see what is the meter reading. The normal draw is 0.05 amp and less. If the draw is more then that you have a draw. The way to pinpoint the faulty part that draws the current is to, start removing the fuses one at a time and monitor the amp meter to see when the current drops to normal. As soon as that happens look at the fuse and see what part is that particular fuse feeds. most likely you find the culprit.

Dec 24, 2015 | Cars & Trucks

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What would make the battery go dead sitting 2 days without being cranked


Connected ? Could be a light or fault on alternator draining.if it loses charge disconnected battery is finished

Oct 01, 2015 | 2005 Jeep Grand Cherokee

1 Answer

98 Jimmy has a power draw it kills the battery within 12 hrs if you pull the 50 amp fuse for the int batt draw goes away any ideas


Yes Steve I do , that fuse supply's power to the I/P fuse block inside the vehicle . It powers AUX/PWR fuse #13 -20amp , RDO/BATT fuse #19 - 15amp ,MIR/LKS fuse #7 - 5amp , CTSY/LP fuse #8 - 15 amp , CIGAR/LTR fuse #2 15 amp , PWR/LKS fuse #14 15 amp , HDLP/SW fuse #1 - 10amp .Do you know where the I/P fuse block is ? You would need to do a parasitic draw test ! This involves hooking up a amp meter in series with the negative battery post an negative battery cable . Pulling each one of these fuses till the battery draw stops ! How To Perform Parasitic Draw Test EricTheCarGuy check out Eric the car guy's video on the subject !

Sep 14, 2015 | Cars & Trucks

1 Answer

Battery draining out checked alternator lights radio etc please advise new battery fitted aswell


You need to do a parasitic draw test with a amp meter hooked up in series with negative battery post an negative battery cable ! Check how much draw there is an then pull fuse's till you see the draw go away . Find a wiring diagram of power flow for that circuit to see what all is powered by that fuse . How To Perform Parasitic Draw Test EricTheCarGuy

Jul 09, 2015 | Cars & Trucks

1 Answer

Hi, I have 1998 Ford F-150, 2wd automatic, V6. I seem to have a parasitic drain on the battery of about 4 amps, and I have traced it down to fuse #15 on the inside (the GEM fuse). Also, fuse #19 will drop...


GEM stands for General Electronic Module and controls a lot of non engine related things, such as power windows and locks. I had a 2000 ranger the other week I was working on with a bad one. To correctly test the GEM you need to hook up an amp meter to see the current draw. It takes the GEM about an hour to full power down. If your just sticking a test light on it, it may be miss leading you. Try hooking your test light up like you was testing and leave it like that for an hour without messing with the car, to see if the light is still lite. The best honest way to test is with an amp meter though. Should have .05 amps or less on it after an hour, anything more than that is a bad GEM.

The GEM in the ranger had to be programed by the dealer.

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1 Answer

Xg300 parasitic draw, located the 2 fuses that have the draw on them, how do i fix it


parasitic draw should remain at 50 milli amps or less or .05 amps this needs to be checked with an amp meter with the battery terminal disconnected and the power drain going through the amp meter keep in mind the circuits your testing may take up to an hour or two to fully go to sleep there is no easy way to test these multi circuits it takes years experience to troubleshoot these

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Something pulling battery down on 1990 olds 98


You may need to test for a parasitic power drain, for example a horn switch that is stuck closed causing the horn relay switch to stay on continuously even if the wire was unplugged from the horn.

You will need multimeter to test for a parasitic power drain.

1. With the key off, disconnect the negative battery cable.
2. Connect the black multimeter test lead to the negative battery post, connect the red test lead to the negative battery cable.
3. With the meter set to the DC milli-amps scale note the current draw displayed. If it is over 20 mA, there is likely something drawing power that shouldn't be.
4. Leaving the meter connected have an assistant pull fuses one at a time (replacing them before pulling the next) until the meter reading drops. The circuit that this fuse powers is where the problem most likely is.

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2 Answers

1988 cutlas siera 2.8 replaced starter, had alternator cheked replaced cps, had coils and modular checked ecm works fine, won't hold charge something draining battery, anything else possible


this is teh generally most over looked problem, 99% of the time the glove box light stays on and you would never see if from inside the car. try removing the bulb and see if that solves your problem

Sep 06, 2010 | 1988 Oldsmobile Cutlass Ciera

1 Answer

Buick century 2003, slow drain overnight, wont start in morning


To know for sure you need to do parasitic draw testing ! Not looking for a magical fix on here . has anyone ran into any issues that may cause drain, like glove box light switch etc,???? In my thrity years of repairing vehicles have seen a lot of thing's cause this problem .Back in the 80's when i first started at chevy dealer saw glove boxes stuff full ,to the point light would stay on . These day's more like a module not powering down when it's suppose to. Hooking up a amp meter between the neg. battery post and neg. cable an checking amp draw. If it's over 80 miliamps you have a draw on the electrical system. Pulling fuse's till the draw goes away . find what all that fues powers and isolate the different circuits till the draw goes away . That's kind of the long way now a days . There is a much easier way ,voltage drop testing accross the fuse's .
The BEST Way TO Perform Parasitic Draw Test

How To Perform Parasitic Draw Test EricTheCarGuy

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