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How to Diagnose A Parasitic Draw With Simple Tests. (Car Battery Dies Overnight) 

Repair Geek
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How to Diagnose A Parasitic Draw Car Battery Dies Overnight. In this video we are going to take a look at how to diagnose a parasitic draw. We will also go over how to identify an intermittent parasitic drain. A parasitic draw will cause your vehicle's battery to die overnight. We will go over the steps on how to isolate the circuit that has the parasitic drain and how to identify the component that is causing the issue. Aftermarket add-ons are notorious for causing battery drain issues.
Some of the symptoms of a high parasitic draw are: Your battery looses charge, battery dies overnight, battery won't stay charged, or your battery is frequently dead.
Where to get full service information like wiring diagrams:
bit.ly/3rZMLCi
My Parasitic Draw testing requires 2 multimeters. Here are a couple options:
Cheap Multimeter: amzn.to/3g4KfFC
Higher-end Multimeter: amzn.to/3H7Q9lh
My Amazon Store: www.amazon.com...
Help support the channel, buy using my Amazon links
As an Amazon Associate I earn from qualifying purchases and your cost is exactly the same.
I source all of my service data from the same place that professional shops do. You can as well: www.pntrac.com...
Questions? Shoot me an email at repairgeek365@gmail.com
Disclaimer:
The information, demonstration and any content contained in this video is for informational purposes only. The user Repair Geek makes no warranty, express or implied, regarding the effectiveness or safety of the contents of this video. In no way should the contents of the video, including the tools used, be repeated or tried by anyone. Viewers should only seek the help of a trained professional located at a licensed auto repair shop for any fix, modification, alteration, or any change to their vehicle. Repair Geek shall not be liable for any injury, damage, or loss to any person or property that may result from use of the tools, equipment, or any content contained in this video. In addition, there is no way to guarantee that the video is not altered or modified or is not in the final form submitted by Repair Geek and therefore, Repair Geek does not warrant that the video is unaltered or not modified. The links on this video to products are for informational purposes only and in no way are an endorsement of the safety or effectiveness of the particular product. Viewers understand that anything contained in this video or linked to or from this video is the sole responsibility of the viewer and in no way provides an express or implied warranty as to the safety or effectiveness of any linked tool, product, or video. Therefore, viewer agrees to release, waive, and discharge Repair Geek or anyone affiliated with Repair Geek, from any and all liability, claims, demands, actions, and causes of action whatsoever arising out of or related to any loss, damage, or injury, including death, that may be sustained by the viewer, or to any property belonging to viewer, regardless of whether the loss is linked to the use of the contents of this video, or otherwise and regardless of whether such liability arises in tort, contract, strict liability, or otherwise, to the fullest extent allowed by law.

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28 сен 2024

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Комментарии : 54   
@RepairGeek
@RepairGeek 2 года назад
Where to get full service information like wiring diagrams: bit.ly/3rZMLCi My Parasitic Draw testing requires 2 multimeters. Here are a couple options: Cheap Multimeter: amzn.to/3g4KfFC Higher-end Multimeter: amzn.to/3H7Q9lh My Amazon Store: www.amazon.com/shop/repairgeek Help support the channel, buy using my Amazon links As an Amazon Associate I earn from qualifying purchases and your cost is exactly the same.
@markm0000
@markm0000 2 года назад
Instead of sneakily trying to swap the battery cable on the terminal just use a wire with alligator clips and hook it on the post and cable before removing it. The electricity will instantly switch to the wire. Then hook up the multimeter and remove the jumper wire. Reverse this procedure when you’re done.
@howardboyd7764
@howardboyd7764 Год назад
This is by far, away the best, most simplistic non convoluted explanation of parasitic draw I've seen and I was under the impression ALL DATA was a $2500 a year period. Thank you very much.....
@Fatboy.25
@Fatboy.25 2 года назад
Great video and info. Thanks
@willdrivesu7914
@willdrivesu7914 Год назад
Wish I had watched this sooner, I have a vehicle with an aftermarket head unit, and been trying to figure out where I was losing power from. (It was not something I installed, it was already in the vehicle when I bought it) I wrongly assumed when I turned the car off that the unit was also shutting off, but apparently it does not do that and drains the battery significantly in just a day or two of not driving. (Parked it lastnight and just hooked the charger up to it and it was down to 70% just sitting over night) So the head unit drained 30% of my battery in 24 hours...
@evaldas266
@evaldas266 Месяц назад
Hey i have parasitic draw too on Ford Galaxy 2004 2.0 petrol but how can i test with 1 multimeter or buy another one? Because it s****s when thr battery dies after week.. I think it could be radio but if disconnect then how i will listen to music?;))
@richardb4022
@richardb4022 10 месяцев назад
That site is at the library.. you can print them.
@RepairGeek
@RepairGeek 10 месяцев назад
Not in Akron Ohio it's not. I've checked.
@westnwahs
@westnwahs Год назад
OBD sensor plugged in. Thanks dude, I'm an idiot!
@makepartsUSA
@makepartsUSA 2 года назад
so if the customer wants to keep the RS, then that module went bad and need to be replaced? or is it possible it always drew current, but after time the battery is weaker and more susceptible to low charge conditions from the parasitic draw?
@RepairGeek
@RepairGeek 2 года назад
The module is junk. The RS needs replaced.
@RJLM330
@RJLM330 2 года назад
So need to do this on my 2001 suburban. This issue happens when it rains. My battery does not have posts like yours does. So when you take the red connector from meter to the grpost sounds like you do it carefully and before the battery lead is totally removed from the post. So my question is how do you do it on my battery with no posts like yours. Am I over thinking this.
@RepairGeek
@RepairGeek 2 года назад
Thread a bolt into the side post on the battery and attach the alligator clip to that.
@gregp2204
@gregp2204 Год назад
Hodge-podge of aftermarket BS-haha I love it
@barnz008
@barnz008 2 года назад
The use of two multimeters is genius. Guess I need to buy another and get to work. Thanks for the thorough how-to.
@markw96789
@markw96789 Год назад
Awesome video. I appreciated your sharing your knowledge and experience. I have a friend that is dealing with a parasitic draw on her 2009 Acura TL 4 dr sedan. I am going to try and help her next week. She has had the car in a repair shop and spent money replacing her alternator, battery, a air conditioning switch and relay and her car still has problems with the battery draining overnight. I am hoping with the knowledge you provided in your video I can locate the problem and fix it for her. Thank You again
@JerryAlbro
@JerryAlbro Месяц назад
Very well done. I deduced the same trick for checking the milliamp draw but the millivolt drop across the fuse body is brilliant. Thanks!
@aakudev
@aakudev 18 дней назад
Thanks, is 0.04 mA ok for Civic 2008 4 Door AT?
@NextLevelAutoDiagnostics
@NextLevelAutoDiagnostics 2 года назад
I really enjoy your videos. Well thought out content.
@commandoo1
@commandoo1 2 года назад
i am confused how come fuse poles will show voltage ? they are on same line voltage at both end of fuse should be essentially zero .
@RepairGeek
@RepairGeek 2 года назад
You're measuring the voltage drop across the fuse. I measured 2 MV across the fuse terminals. 2MV is essentially zero but, not zero giving you direction... If current is not flowing the voltage drop is zero MV.
@richg0404
@richg0404 2 года назад
There is at least a SLIGHT voltage drop across all electrical components, including fuses and even plain old wires. In this case, there is a very small drop across the very small fuse which indicates that SOME current is flowing when there should be none.
@spiridondimaris465
@spiridondimaris465 2 года назад
Good video good job
@mauricelong7024
@mauricelong7024 2 месяца назад
How about the hood?
@pgreenx
@pgreenx Год назад
What do you do about those larger square fuses and the relays?
@RepairGeek
@RepairGeek Год назад
Remove the clear lid.
@halfSpinDoctor
@halfSpinDoctor 2 года назад
Love it - great video as always! My most recent repair on the Civic also involved digging in the engine compartment fuse box -- to replace a faulty ELD (electronic load detector).
@RepairGeek
@RepairGeek 2 года назад
Lol you jinxed me. You wanted honda repair videos. 2 weeks later I a call from my mother in law that her civic won't start...
@halfSpinDoctor
@halfSpinDoctor 2 года назад
@@RepairGeek 😲
@lenwhite9901
@lenwhite9901 10 месяцев назад
Finally, someone who knows how to create a helpful video. Thanks. Funny comment. Sitting here watching a youtube on how to test a car circuit for a parasitic draw. She's sitting at the table drinking her tea. You say "this result shows there is a draw on the circuit that controls the radio, keyless entry and datalink connector." My wonderful wife asks, "What's a ding-a-ling connector?" Never a dull moment.
@Glenn_123
@Glenn_123 2 года назад
Really good video! Great job. The negative battery side for the amp meter I did not understand...Did you just put the meter in line with the negative terminal. Negative cable to meter - meter back to negative battery terminal? Thanks for a great video.
@RepairGeek
@RepairGeek 2 года назад
Exactly. So the meter goes in line between the negative battery cable and the negative battery post. All the current drawn by the vehicle needs to go though the meter for it to be read. Most meters can only handle a maximum of 10 amps. Anything over that and you will blow the fuse in the meter which will need to be replaced.
@jaras1969
@jaras1969 2 года назад
@@RepairGeek In other words: DON'T try cranking with the meter in place, or you will be sorry.
@RepairGeek
@RepairGeek 2 года назад
@@jaras1969 yeah don't turn the headlights on haha.
@Glenn_123
@Glenn_123 2 года назад
@@RepairGeek thank you very much for the clarification!!
@Glenn_123
@Glenn_123 2 года назад
@@jaras1969 very good tip and reminder! Thanks
@ontario-yota-1050
@ontario-yota-1050 2 года назад
Very helpful, My dads 2010 f-150 has had a parasitic draw haunting it for months now.
@AlexHernandez-xh8ei
@AlexHernandez-xh8ei 2 года назад
When I touch the terminals with the pins on my multimeter it shows me about 40 amps and a lot of things in the car start to turn on why?
@cruzfernandez4554
@cruzfernandez4554 Год назад
I thank you for your time and the information you shared
@PeteyMcSavage
@PeteyMcSavage 2 года назад
Great tip on getting data
@joeybrazda364
@joeybrazda364 2 года назад
I wish I saw this
@milanraseta8
@milanraseta8 2 года назад
So now what is the problem if that device works.. is it a bad ground??? You buy a new one?. How are going to your fix issue that you found now? Thanks
@RepairGeek
@RepairGeek 2 года назад
At that point you would need to isolate individual components. Like I said, probably would have unplugged the radio or tach if i didn't have an issue with the remote start. The driver door lock buttons stopped working on this car when the remote start went on the fritz. The door lock is also tied into the immobilizer. When the remote start was unplugged, the door locks started working correctly. So you need to pay attention to the vehicle like I said. You will have clues where to go when you find the right circuit.
@z9ski690
@z9ski690 2 года назад
All data is available on online from many public libraries
@RepairGeek
@RepairGeek 2 года назад
Yep, it is. I know the public libraries in Akron Ohio it's not available. I've checked. You can borrow some Chilton and Hanyes manuals but they are useless for a problem like this.
@whereisit467
@whereisit467 2 года назад
Some modern cars take an hour to go to sleep
@johncollins8304
@johncollins8304 2 года назад
Some old guys take over an hour to get to sleep. Hence I'm watching this at 02:48!
@KLR-650
@KLR-650 2 года назад
What about the square type fuses?
@RepairGeek
@RepairGeek 2 года назад
Pop the cover off with a small screw driver.
@KLR-650
@KLR-650 2 года назад
@@RepairGeek I have watched a ton of parasitic draw videos and not one person has tested the square type fuses. Also, they don't have to get on the passenger floor with half the body outside the truck and on the ground, twist ninety degrees, contort the arms up and back, , and try to read the meter at the same time. Don't forget the light. Still have not found my draw.
@RepairGeek
@RepairGeek 2 года назад
Buy a backlit meter, pull out the drivers seat if you need more room.
@txfieros
@txfieros 2 года назад
Awesome tips. Never had to deal with this, but good to know.
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