I know this video is old but on modern cars, you need to connect the multimeter up and wait... 10, 15, 30 minutes for the car to really go to sleep. If you jump the gun and start pulling fuses you'll go crazy trying to find the source.
Brian, that is good training and a good diagnostic tip. However, a bad example was shown. You're obviously going to get a high current draw on that circuit with your driver's door open. Your dome light circuit is energized with the open door. There may well be a problem in that circuit, but we can't say for sure with an open door (switch contact closed).
This was the most perfect informative video on this topic even to the average mechanic or driver, compared to what I've seen earlier from other good TH-camrs.. thanks a lot for sharing!
Very helpful! I have never used the 10A input on my multimeter before- now I'm going to pull out the book and study up on that function. THANKS for posting this video!
I found out that using a multimeter is cheaper than having a battery totally discharged by a pesky leak that will now make the car require a new battery after going almost completely dead twice. Thanks for the diagnostic!
A mechanic told me that you need to wait several minutes for the meter to drop its reading. The computer performs a number of checks before going to sleep, all of which draw current.
Loved the tips it should really help me with my problem. Thanks. Just a thought in the Partner rating isn't the "immature" content that you want to avoid?
Hi! I have watched the video and did test, however, I couldn't find any leaks - meter was showing 0.05 Amps and I think the car battery is also working - shows around 12.5Volts and the display indicator lights off after I start the engine. Yet sometimes after the car has been properly hooked on the accumulator it doesn't start, making just a click sound. What else I could in order to isolate the problem.
Starter motor, when it does this just drop the vehicle in any of the gears and rock it back and forth a few inches. Then either engage the clutch or drop it out of gear and try and crank it with the key again
C-3 alarm control, now look under the seat at the alarm control unit and see if it has been submerged or has gotten wet, Most likely it has and the alarm control unit and possible wiring will need to be replaced. Porsche tech 101
Important question, are new batteries supposed to leak acid from the top when you flip it upside down? Bought 2 like that...kept one bc the AutoZone employee says that's ok. Never seen that. People say it should never leak regardless. Another employee I spoke to just said you're not supoosed to turn the battery upside down? What's the truth? What should I do?
Never heard of a Battery leak Unless it is leaking out fluid This is a Parasitic "Draw" test ..And a few tips before you even start your test ..Number one even when you charge your battery How do you know it is holding that power? Have a load test done..2nd double check your multimeter to see it is working correctly And has good batteries Both of these tips as common and maybe stupid to even think about Has had people spend hundreds of dollars at mechanic shops. A few other tips : Wait 30 mins for your computer to go into "sleep" mode You can have items still running And will give a false reading. Another problem could be your alt, And also Make sure you do not have a hood light on while doing the test ..unplug the light Or find away to close the switch that triggers it ..
I’ve got mine hooked up, when I first put the multimeter on it jumps to 2.54 amps. After about 10 sec it drops to 0.51 then another 10 sec down to 0.01. Am I doing something wrong?
There might be a system in your vehicle that operates for an amount of after time after the Key is in the Off position. If the car is a late model, you may need to let it stand for "x" mins before performing the leak down test. I suggest check it every 10 minutes over a 40 minute period
thank you for the video . with the money people pay for cars i would think .. they should be better engineered. with better design that prevent such problem !!
3:19 Isn't that 160 milliamps? Can anyone explain to me how that's supposed to mean 16 milliamps. Isn't an amp equal to 1000 milliamps? Thanks for your time.
The current occur because u didn't close your door, its not in sleep mode...you are so lucky the current is under 10A.,if it is higher it will blown your multimeter 10A fuse...
Best car maintenance video I've ever seen.
I know this video is old but on modern cars, you need to connect the multimeter up and wait... 10, 15, 30 minutes for the car to really go to sleep. If you jump the gun and start pulling fuses you'll go crazy trying to find the source.
My girlfriends mazda is currently having this issue and I instantly remembered seeing this video a couple years back. Thanks Cooley!
Well said man. You explained everything very clearly in less than 5 mins. Thanks a lot & God bless you
A gem of a DIY video. CNET has always been my go to for computer stuff... didn’t know it went beyond. Thanks!
Brian, that is good training and a good diagnostic tip. However, a bad example was shown. You're obviously going to get a high current draw on that circuit with your driver's door open. Your dome light circuit is energized with the open door. There may well be a problem in that circuit, but we can't say for sure with an open door (switch contact closed).
Todd Strong good catch there. It might be that the car didn’t have an actual draw so the open door was acting as a simulation.
Do you know what is the name of the device measures the current?
@@resitkoc7606 multimeter
This was the most perfect informative video on this topic even to the average mechanic or driver, compared to what I've seen earlier from other good TH-camrs.. thanks a lot for sharing!
That video lesson is better explained than my lessons in Uni... Thanks guys
Very helpful! I have never used the 10A input on my multimeter before- now I'm going to pull out the book and study up on that function. THANKS for posting this video!
Clear concise practical just what you need. I wish I knew about this simple test years ago.
The best video I've seen from cnet in a while.
Best video I seen for finding a leak my guy a goat
This is the best video on TH-cam
Very clear and straightforward, thank you very much. Aloha always, John
I found out that using a multimeter is cheaper than having a battery totally discharged by a pesky leak that will now make the car require a new battery after going almost completely dead twice. Thanks for the diagnostic!
at last something useful on CNET !
Leave it to TH-cam to teach me something the Air Force couldn't teach me.
what if the reading on the meter says 0.00, I did exactly as he did
Very useful video, thanks.
very helpful and short, I liked the video
Amazing! Such a useful video, will keep this in my favorites if the problem ever arrises
Every morning my battery was always flat.
Am so helped.
Thanks sir
Excellent video thank you
You are a great teacher. Excellent video. Thanks.
Brilliant vídeo, thankyou
Very informative 👍
very basic easy job, thanks alot
Thank you so much.
Great video but what is the meter called so I can get one?
very well explained!!! this has saved me big money. many many thanks !!! ❤️🏴
Great video
Perfect 👌,& Can you do a video for ,how to check the circuit of horn,with multi meter
Great video wish i had seen this a few weeks ago as I had a weird electrical issue.
Bruh that's sooo helpful, i was lost and was about to burn my car but this gave my car another hope to stay alive
Thanks mate
Thanks very short and informative
Good one
Great information . Looking for more DIY videos.
Wow, Great video, thank you, a good diagnostic tip.
Great vid
Thanks
Good video
That's awesome. Thank you for the tips!
Is it possible that there's a voltage leak before the fuse box?
Wow thank you this is good
A mechanic told me that you need to wait several minutes for the meter to drop its reading. The computer performs a number of checks before going to sleep, all of which draw current.
Thank you
Short and very informative
Smart guy
Very good, but you had the door open all the time you were pulling fuses. The interior light would be on, drawing over one amp.
That"s the practical way of diagnosing such fault.
Thanks sir 🙏🙏🙏❤️❤️❤️ best teach 🙂
Very well made video
Is the standard discharge with a motorcycle battery the same? Its 12 volt vs 24volt(car) right?
Thanks, Brian! Very helpful!
amazing video, Thanks!
This time why fuse not blown? Sir
This is awesome, thanks.
Explained clear.
Thank you sir
Nice and clear.
Wonderful nice and clear
Yes good tell
Loved the tips it should really help me with my problem. Thanks.
Just a thought in the Partner rating isn't the "immature" content that you want to avoid?
Nice video
That was very good
thank you very informative artical
Thanks a lot! great video
Well done.
Best of the best. thanks.
Can you use a hook amperimeter instead of connecting your multimeter in line?
Only if it's a DC ammeter.
Hi! I have watched the video and did test, however, I couldn't find any leaks - meter was showing 0.05 Amps and I think the car battery is also working - shows around 12.5Volts and the display indicator lights off after I start the engine. Yet sometimes after the car has been properly hooked on the accumulator it doesn't start, making just a click sound. What else I could in order to isolate the problem.
Starter motor, when it does this just drop the vehicle in any of the gears and rock it back and forth a few inches. Then either engage the clutch or drop it out of gear and try and crank it with the key again
C-3 alarm control, now look under the seat at the alarm control unit and see if it has been submerged or has gotten wet, Most likely it has and the alarm control unit and possible wiring will need to be replaced. Porsche tech 101
Important question, are new batteries supposed to leak acid from the top when you flip it upside down? Bought 2 like that...kept one bc the AutoZone employee says that's ok. Never seen that. People say it should never leak regardless. Another employee I spoke to just said you're not supoosed to turn the battery upside down? What's the truth? What should I do?
I'd go with the second answer. Why would you want to turn a battery upside down?
@@Georooney old batteries don't do that. Was carrying it on shoulder.
Thanks for that :)
Never heard of a Battery leak Unless it is leaking out fluid This is a Parasitic "Draw" test ..And a few tips before you even start your test ..Number one even when you charge your battery How do you know it is holding that power? Have a load test done..2nd double check your multimeter to see it is working correctly And has good batteries Both of these tips as common and maybe stupid to even think about Has had people spend hundreds of dollars at mechanic shops.
A few other tips : Wait 30 mins for your computer to go into "sleep" mode You can have items still running And will give a false reading.
Another problem could be your alt, And also Make sure you do not have a hood light on while doing the test ..unplug the light Or find away to close the switch that triggers it ..
amazing!!!
AMAZING!!!
I’ve got mine hooked up, when I first put the multimeter on it jumps to 2.54 amps. After about 10 sec it drops to 0.51 then another 10 sec down to 0.01. Am I doing something wrong?
There might be a system in your vehicle that operates for an amount of after time after the Key is in the Off position. If the car is a late model, you may need to let it stand for "x" mins before performing the leak down test. I suggest check it every 10 minutes over a 40 minute period
No, all is good. Sounds like you need a new battery.
thank you for the video . with the money people pay for cars i would think .. they should be better engineered. with better design that prevent such problem !!
Deja vu!
Way better then going to mechanic and being overcharge ridiculous price just for diagnostic in which they use similar products smh
Re-upload...
3:19
Isn't that 160 milliamps? Can anyone explain to me how that's supposed to mean 16 milliamps.
Isn't an amp equal to 1000 milliamps?
Thanks for your time.
Yes thats 160mA and thats wrong. And normal leak is 10mA - 40mA (0.01A - 0.04A)
@@siimvillemson3578 thanks friend
Epic
The current occur because u didn't close your door, its not in sleep mode...you are so lucky the current is under 10A.,if it is higher it will blown your multimeter 10A fuse...
Try starting the motor. :)
this video should have been done 3 months ago
*Please wear a glove*
This is good information, but why is the guy wearing a suit. Who wears a suit working on a car.
First
Thanks