Question about 2002 Hyundai Accent

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Electrical system I tryng to put a new battery. I need to know how much current should it drain when no accessories are running, the ignition key is off. It is possible that I should see certain quantities of amps and after somes minutes it get lower. I so, please tel me how many amps on each steps. Thank you very much

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  • normandlozea Jan 01, 2009

    I got a current of around half of an amps. seem to be OK.

    But now the car do not start with a brand new battery. The exterior temperature is about -1 F or -20 C The starter turn at a good speed. No explosions seen to occur. No gas odor neer the motor. The gas tank is at the half.

    Could it be a common problem on that model ?


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Less than 1 volt with door closed and key off,nothing on.

Posted on Jan 01, 2009

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Replaced alt/ battery 2005 PT cruiser is good but i loose the charge and battery is dead by morning ...even after running my car !

Connect an ammeter and set to the 2 amp scale and check out the current drain with the ignition key removed. Remove a fuse one by one until the current drain goes down. That is the fuse that is connected to the power line that is responsible for the drain. Check all of the accessories, etc on that line for the draw.

In meantime till you resolve the issue just disconnect the negative battery terminal till next time you want to use the car so the battery does not drain.

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Most likely the alternator is bad. Best way for you to check is start it up, then pull the negative cable off the battery. If it dies the alternator is dead. As far as it draining when parked, I have replace a lot of the ignition lock set and keys because you can put it in the accessory position(All the way back) and pull the key out. Leaving on things like the radio.

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This means there is a drain on your circuit as soon as the battery is connected. For this problem to be sorted out you need to check the drain current with a series ammeter/multimeter to the battery on the positive terminal. Disconnection of the fuse one by one will confirm the drain circuit when the meter comes to zero value which is no drain current.A trace on the removed circuit will confirm if the radio or any accessories electronic component unit including any remote unit is faulty.

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Runs fine for a wile then dies battery drained

A car battery can run down for any of several reasons:
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  • The battery is not being recharged while the vehicle is being driven (you have a charging problem)
  • There is a key off parasitic electrical drain on the battery because a relay is sticking, a module is not shutting down, or there is a shorted diode in the alternator.
  • Your battery is old and will not hold a charge anymore. The battery needs to be replaced.
Most of the time if the battery is fairly new and keeps getting drained have the mechanic check the alternator if its charing the battery.
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Car is completely turned off. (Key is out of ignition) But the accessories still work, the window still rolls down.. Will this drain my battery, what do I do?

this could be a ignition switch issue -- the contacts might not be disengaging when the key is in the off position,, or maybe it is making contact ( as if in the accessory position ). this could drain the battery if there are accessories left on in the car. the celica is known to have many issues with the ignition switch -- if you want it fixed right I would recommend taking the car to a automotive locksmith and have them replace the ignition switch with a new one.


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2 Answers

Battery is dead everyday

You either have a bad battery or a bad alternator. Most alternator shops and Advance auto parts store will check both for free. It is possible for an alternator to charge the battery while the car is running but kill it when it is switched off because of a bad diode in the alternator.

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My 1993 940 non-turbo just dies when running as if the alternator is bad. However, the alternator has been replaced. It still dies and needs to be jumped. When jumped, it'll run for a bit then die a...

OK the battery in good charge should be at 12.5 volts ( as measured with a voltmeter across the terminals) When the engine is running you should expect the reading to be about 14 volts. Put the lights on ( a load on the battery) and the voltage can go as high as 14.5v. Switch everything off (I mean etc) and disconnect the negative terminal to the battery. Now put the meter in ammeter mode and measure the current between the negative terminal and the cable that is now disconnected. It should be really very low current (milliamps at most), switch on the lights to show ourself what that current drain looks like. If the residual current looks significant take out each fuse in turn and return it noting on pen and paper any drop in current when the fuse is out. This process will identify the circuit that is draining the battery. Check the wires and junctions in this circuit for shorts etc. If its lights try removing bulbs until the current drain stops If possible leave the fuse out over night on this circuit and see if this effects the battery's ability to charge and stay charged.

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My battery is new and after sitting a day or two it will drain to death i am trying to figure out where the short is

You need to place a test light in between the negative cable and the battery negative post.The test light is cheap,purchase one and remove the negative battery cable from the battery,place the clip of the test light to the negative post on the battery(I know it is a side post),You may need a helper.Take the tip of the test light to the negative battery cable end.With the key out of ignition,and the doors closed,make sure there are no hood light,take it out if needed.If the test light comes on,there is a draw on the system,uplug the alternator plug first to see if the light goes off,if so,replace the alternator,if not,open the door,and remove the dome light fuse,then start removing fuses one at a time,and putting them back after you remove them and watch the test light,when it goes out ,that is the circuit that is the problem,so,trace the fuse to what it goes to,,also,keep in mind,clocks are bad to do this,and clocks in the radio.

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2 Answers

My ford expedition just all of a sudden starting playing the radio in time when the key is not in the ignition and my air is blowing when key is not in ignition now my battery is dead i'm scared to drive...

Hi.this is being caused by a faulty ignition switch the Accessory or auxiliary circuit is not shutting down, via ignition circuit breaker. this will occur in defective switch from time to time. simply replacing this ignition switch will fix your issue.

When you turn your ignition switch all the way off, it is designed to kill all auxiliary power once this motion is initiated. if the switch mechanism is faulty, the circuit is unable to control the current, in return, allowing the current to stay closed. this is mechanism failure at the most and, the switch should be replaced.

If you wish, i will post a battery drain test below so you can pin point the exact location where the circuit is closed when the switch is in the off position. If the current pull is located on numerous devices, this will confirm my diagnosis.


Here is the procedure I use to isolate a battery drain. Remove negative battery cable from the battery. Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or "light" if there is a drain. If the "light or glow" is faint, that is probably normal draw for the clock or computer. If the "light or glow" is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.

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1 Answer

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