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Acura Battery Draw? CHECK THIS FIRST!
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- Опубліковано 17 бер 2021
- This 2009 Acura MDX has eaten three batteries within the last year, and the owner has to keep it on a trickle charger.
It's his wife's car, so he wants it fixed right!
Let's shortcut the diagnosis to 100% verify a common cause of battery parasitic draws on late Acura vehicles.
Can we fix it in the driveway with NO PARTS REQUIRED?
ASTRO AI DVOM:
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Enjoy!
Ivan
"That didn't happen until you touched my car!". Probably not the case here, but you have to love those.
Eversinceyou
Fastest on the draw. I blinked and it was fixed! Nice going Ivan.
So true! I had to re-watch because it was over before I would have had the fuse box cover off!
Voltage drop across each mini fuse works.
Mini fuse has a chart for each fuse size.
Excellent work Thanks
At least you didn't have to contort
yourself into a pretzel to get to the
Module Ivan!! Great job!!!
No bonus footage... very rare Ivan!!
My girlfriend's 2005 Acura MDX had the exact same problem. A little internet research led to the hands free unit being a likely suspect. I don't have electrical diagnosis equipment so I did a brute force diagnosis; I unplugged the module and viola, no more draw.
How did you know there was no more draw? Have to measure it somehow...
@@PineHollowAutoDiagnostics The battery stopped dying so I figured that was sufficient evidence. Obviously if I were doing this as a business I'd need to verify it more thoroughly, but unplugging the module accomplished all I needed it to.
Nice helpful video that save folks a lot of money in unnecessary batterie replacements and they ain't cheap!
Thank you for your easy to follow instructions and demonstration!! I replaced the battery less than a year ago and my car kept having a dead battery. Checked the battery and alternator at both O'Reilly and AutoZone and they tested fine. After checking with the multimeter I was able to trace the power draw back to the handsfree system just like you suggested. Since unplugging it my car battery has been holding a charge for 2 months. Appreciate your help 🙂
Nice job!
Great baseline technique with voltage drop across the fuses excellent diag always start with the most common problems
I've never thought of that one before. Excellent method
fuses are resistive elements, which are meant to open upon over-current by burning the lower temperature meting point metals, before wiring and maybe devices go fully up in smoke.
none are exactly perfect and the reading could vary some from fuse to fuse, so don't expect "ohms law/electrical pie chart and calculations to be exact or anywhere near. but yes it does aim you at what circuits are drawing current rather quickly :)
My friend has a current draw. I pulled that BT but no amp drop.
I unplugged the alternator, nothing.
I suspect the starter.
Thanks for posting.
Would've been nice to see how you set up your meeter to your battery also the one you used to test the fuses. For us diy guys
Knowledge is a valuable commodity when you have seen it before, in some newer Volvo's disconnecting the battery with out the modules at sleep leads to big problems. Great video
T shirt weather less than 20C? In the land down under, T shirt weather is say around 30C. Getting hot is 35C. Really hot Summer day 40C.
Looks like snow in the background - t-shirt weather? Like in Siberia?
😉
Ivan radiates a common sense, that only exists with a deep understanding of the subject, and the use if the appropriate tools. Once you know both aspects well enough, "picking up on the scent" becomes a natural reaction.
You can definitely tell these things when your in the know. Most people would fire the parts cannon without being able to figure it out
i love that trick with the door button, i learned something new today, thanks!
That was improvised on the spot lol
@@PineHollowAutoDiagnosticsjust came across this video. As a southern boy, I’d like to give you honorary redneck status for that 😂
Now, boys and girls; that's what you call Acura-cy!!!
The HFM drawing current while idle seems to be an epidemic among many manufacturers. Seen Hyundai, Mitsubishi, and Chrysler doing it too.
0:48 right on, he bought an East Penn battery. I have one that I bought in 2009 and it is still good according to my battery test.
I had the same issue on a 2007 Honda civic here in the UK. I also noticed it stayed warm to the touch which was another observation when I tracked it down! I did the same thing and left it unplugged as it was never used anyway.
What causes the issue in the unit? Can it be fixed?
@@malcolmy11 Internal failure of a power switching transistor. It could be repaired but the ones I have looked at were potted so it wouldn't be an easy thing.
Thank you for the video. My battery was having issues starting my acura rl, and then it died. My new battery seemed to work great for a few weeks, and then started to seem like it was barely turning the engine over upon starting it. (I noticed it would seem to have this issue starting in the mornings)
I saw this video and removed the Bluetooth unit first, and now my acura now fires up great each time. (My hands free bluetooth unit was located in the front passenger side kick panel just on the right side of the legs under the glove box.)
Don't you just love these ? Well done sir 👏
Haha Keith for once it was a predictable pattern failure :))
I love learning new tricks with my pliers! (door switch)
Keith, what a pity we don't see your videos ...
@@engeneer_ru5827 One day again soon !
@@NewLevelAuto I'm waiting with interest!
Add a relay that powers the unit when key is inserted .
Comes down to whether the customer wants to pay for that 'fix' and if they even care about the HFL to begin with. And should the owner want to replace the module later that wiring would need to be undone again.
bluetooth is and was always a sad joke, followed by wifi and all preceded by cellular/smartphones. as a user of said junk I have plenty of rights to claim so ;)
That's a good idea!
That was a pretty straightforward and easy one. But I have been involved with some crazy ones. When I hear parasitic draw on a 2010 or newer model I don't like it
My father's 2008 Acura TL hands free Bluetooth module was getting hot and read online on Acura TL forum that other people had the same problems and it was also draining the battery. What I did, was just completely remove the hands free Bluetooth module and it no longer gets hot and battery voltage no longer getting low, common problem for it to happen and heard they had a recall on them but they stop doing them already.
Į have same year car, I may have same problem
Excellent diagnostics, using a professional workflow that respects your time. I wonder why they designed the hands-free remote to run off of unswitched power. It would seem a no-brainer, to power it from a source that is turned off when the key is removed. What am I missing?
likely intended on near future use of same module to link/sense phone for proximity control of vehicle ( auto unlock, keyless entry, keyless start/run, etc.) and then reality set in :))
@spelunkerd The Hands Free Link system stores your contact list, text messages and internet searches. The kind of things law enforcement would desperately want access to, and has gained access to in many cases. So to do that the system has to be powered at all times because the safest way for them to retrieve that info is when the car is not occupied.
Manufacturers of cars use your info and sell it to advertisers. That's why they are so eager to show you how to use the system when you buy a car.
Saw this coming when it was only a 5 minute video lol
I used To own that small pocket meter , got me out of bind many times , thanks for your videos Ivan take care
After reading on line, disconnected the HFL. New battery unrelated. Hopefully solved. Good post.
Thanks for the upload
Say Whaaaaaaat!!! Where’s the bonus footage!!! 😭😭
Great job Ivan. Nice easy diag.
Wow, that DM78 DVM must be almost 30 years old, great little meters I used one of these for work back in the 1980's and -90's!
does the acura TL model have this same unit in the same area?
I love parasites draw! Finding draw is very fascinating.
You may want to check with a doctor! Parasites can be deadly 😄
@@Everyday_Richard 🤣🤣
If the HFL still works but won't go to sleep you could add an inline fuse from an ign ON only power supply in the fuse box to kill total power when the key is off. This gives you back the HFL while running and keeps it fused.
I wonder if it will lose the sync every time...
Same thing I was thinking.. but they've powered it for a reason.
I own a 2015 RDX that I need to track down parasitic draw.
Sure stinks in winter when can't start the car.
@@PineHollowAutoDiagnostics
Amazing, quick, short & clean job
your awesome good value to your videos . i have owned 2 acuras and both with electrical problems . i like how you take your vids step by step .
Nice! Ivan very quick and thorough!
Having an issue with my 2010 mdx. Unhooked the HFL and still a slow drain on the battery.
Nice pattern failure fix. Thanks Ivan!
I just got a 2007 MDX which has a parasitic draw and I was hoping it would be this simple only to find that the Bluetooth module was already unplugged and removed.
Are there any other common draws on this vehicle or do I need to do a full on test?
Nice surroundings you have there, Ivan.
Thanks 🙏 a million you’re dope!! Where is the Bluetooth hands free fuse would be on 2010 TSX
Thanks for your tutorial!!
So to measure the fuses with the multimeter, your just touching it to the fuse. I couldnt see anything. Im so confused
Cool
I had a similar issue in a Honda Odyssey. 70ma drain on the radio
Turns out a aftermarket kit was installed in back of the radio causing drain 50ma. Uninstalled it and it was down to 20 ma which is acceptable ( anything < 50 ma when everything is off )
The shirts will be coming off before you know it! 😂
I have a nice amp meter but im a little unsure how you hooked up your leads. Could you please update the connection process. Others seem to want this also. Thank you in advance
In series from battery cable to battery post 👍
Thanks for sharing Ivan. 👍
Nice one ivan! So simple checks and finding the root cause! Im sad of no bonus footage!! Awww lol
Now I have to find that in my Acura TSX. I've been noticing the battery is low after sitting a week.I've never used that feature anyway.
I disconnected the HFL on my 2006 TL and it seems I'm STILL getting a draw somewhere.
I'll never buy another Acura.
This information is gold thank you
Dang..saw the new multimeter....but wait..the old sears craftsmen is still going strong! 😆👍
I’ve already disconnected my hands free link on my 2005 TL but still find the battery around 12.3-12.4v in the morning. It is only a few months old. Cranking voltage is 10v. Fuse 6 measured .05 mV and fuse 7 .12 - .27 mV all the others see 0. Guessing fuse 7 has to do with the security light on the door. Any ideas?
I still have battery drain and replaced it two or three times, it’s a second car so figured I just wasn’t driving enough during Covid. HFL was already disconnected when I opened up the rear console cover. I think its the radio or GPS but have heard it could also be the HomeLink or CD Changer. Might need a second multimeter.
Ivan, great short video. How about a work around? Switch on dash connected to fuse? Thanks....Jim
Where is bluetooth module on 2020 acura ilx ?
Excellent job Ivan.
Thanks Ivan yes you are a true star I am just your under study thanks for the simple diag
Great video, so would I need two multimeters to pull this test off?
My 2000 acura 3.5 RL has gone through 4 batteries in 14 months. I have taken it to 4 shops and all tell me nothing is wrong, replace battery. I don't know how to do what you did. Can you recommend a shop willing to view your video and help fix it?
Hmm I have no idea where you're located 😅
It's always the hands free link that does the battery draw
My hero!!! Saved me HUNDREDS!!!
😎👍
I wonder what’s wrong internally of that Bluetooth unit that causes the excessive current draw?
My 2018 TLX just began having this issue. Any information on a class action lawsuit? This is unacceptable since it’s a know problem and is potentially dangerous depending on the weather and location.
Super awesome video.
How did you measure the voltage (assuming it is voltage) from the inside? Did you put black on ground and touch the red on the fuse contact point?
Voltage drop across the fuse... If the fuse is not carrying current it will measure 0,00v, just like if you short the test leads together.
Hi. So I disconnected the negative battery post and the negative cable. Now, when i touch one electrode of my multimeter to the negative battery post and one electrode of my multimeter to the negative cable the reading it shows me is O.04 A. Is this ok? Or is it a parastic draw? Because whenever i check my battery voltage in the mornings it shows me 11.94 V.
Does the Bluetooth system get stuck in pairing mode? One of those things when the car has too many options it causes problems.
If you replaced it with a new part with this problem go away?
I think I might of miss it. Did the module work but fail to go to sleep? Is there an outside module that puts it to sleep?
My 2013 RDX now has a parasitic draw :(.... but I can't find the location of the Bluetooth Module. Do you or anyone here can help with locating the Bluetooth Module?
thank you
There other devices for Bluetooth.
Does anyone actually fix whatever inside that module is causing it to stick on.
Does the engine light come on after disconnecting?
Great video! Thanks
You mentioned let’s pull that fuse with the voltage and see if that draw goes away. What situation would have to exist when pulling that fuse would cause the draw to not go away? Thanks
Maybe the fuse is reading a significant voltage due to a flaw in the fuse, making it seem like its the culprit circuit when actually it's not.
Wait, so the repair is "do not use this feature"?
Why not change it so it's live with Key on,. preserving functionality
Very interesting thought! Maybe a nearby relay that turns on with the ignition switch :)
@@PineHollowAutoDiagnostics Yeah the only issue would be that any saved Bluetooth devices would have to be reset every single time you got in the car and it would be really annoying to have to reconnect your phone and initialize the Bluetooth connection every single time you wanted to use it!
@@lustfulvengance It is possible that there are 2 different power supplies: + B and ACC.
@@lustfulvengance I would be surprised if the BT module lacked some non-volatile memory in which to store its list of saved devices. So power off shouldn't be an issue.
@@engeneer_ru5827 You got it. The B+ is the white wire fed from fuse 5, it is the primary power, then the control wire is hot in run/acc and that's the purple wire. The unit should power down when the key is off and only use enough power to retain memory.
Thanks for sharing!
Voltage drop across the fuse is a stupid method. You should have one of your meter leads on ground. 1.5 mV is essentially nothing.
I have the same issues but it's a 2006 Acura MDX , u have any suggestions 😵?
Why did Accra put the module when it doesn't work there should be a recall for that.
Five minutes and thirty five seconds Ivan...you feelin alright? lol\
GOOD JOB ACE!
I wonder what actually fails inside of those hands-free control modules that causes this??
I wonder if it's a software issue or an actual hardware fault?
Yes, I'd like to know this too!.
Probably the same thing that happens with the cluster silver migration.
Control transistor short the power on. The draw is the same as when the unit is in normal powered on state.
very likely capacitors(electrolytic) or interference causing them to stay alive trying to re-pair with user device. the whole 2.4Ghz band is chock full of aging junk which spews high levels of noise all over, not to mention other frequency bands harmonics.
think cordless phone, wifi, microwave oven, cell-phone, other vehicles bluetooth, vehicles with wifi AP/cellular inbuilt, model aircraft/cars/toys, tv's, computers, human pleasure devices, etc. the list is endless on EMI/RFI and direct RF pollution in that band.
@@Blazer02LS Obviously if the unit is to draw current its power control transistor must be on. However, that transistor being on tells us nothing about whether it's shorted, or staying on at the request of software.
Do these handsfreelink units go bad very often? Honda seems to put them in everything.
Yes they do. Very common to the point there was a class action lawsuit about them, because Honda has known the modules fail regularly and have since they started using them.
So how did you fix it when you plugged the fuse back in, did you disconnect the Bluetooth module?
@4:20
The first thing that comes to mind?
Scotty Kilmer would know how to "fix" this.
Scotty Kilmer is a know-nothing hack, and a moron.
@@wildman1137 harsh harsh.
Do I get a prize for knowing the answer? 😜. Which I prob picked up previously from your channel anyways 🤣
Is the module expensive? It's easy to reach so if it is under a hundred bucks why no preserve the functionality. If the owner never uses it, however, I understand
Not cheap, runs about $400.00
If you have a 2nd gen acura rl it's about $1500 for a new module.
experience counts
Got used to the bonus footage...😎
My question is: why is that unit powered when the ignition is off?
It should draw a miniscule amount with the power off, fuse 5 is it's main power feed, there is also a control wire. An internal transistor fails and locks the unit on.
Do you prefer testing for parasitic draw with a meter in series or using an amp clamp?
In series for anything under 1 amp; clamps have too much drift.
@@PineHollowAutoDiagnostics I make a 10 loop multiplier for my amp clamp. You just move the decimal point, makes it more accurate.
Is it the internal resistans in the voltmeter that creates the voltsge drop? I guess there should not be a drop over a fuse?
Yes, there is a drop across a fuse -- only a few millivolts. In this case I think it was 1.5 mV, for the fuse on the circuit that was drawing about 220mA. So R = V/I = 1.5mV/220mA = 6.8 milliohms. A small but noticeable resistance in this situation.
Internal resistance in the fuse itself causes the voltage across the fuse. You can get charts from power probe that show the draw/amps for the different types of fuses.
@@Blazer02LS just keep in mind, not all fuses are exactly perfect made and the drop can vary, so calculations and charts may be skewed quite a ways.(recalled fuses, etc.)
@@throttlebottle5906 True, however in any reputable fuse the resistance is going to be very close to the spec for the rated amperage. The cheap china crap is an exception, but for the better brands they tend to be very close.
Shouldn't you have the door shut?
You missed 3:10
Informative video...
Who was running the hammer drill in the background?🤔