How Kia/Hyundai 4WD Couplings Work
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- Опубликовано: 10 авг 2020
- Hey guys in this short video i go through how a 4wd coupling system works on kia vehicles..
hope you enjoy.
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Hey man - thanks for this video. Got this exact issue on my sorento and I’ve been babying it til I can get to the shop.
Glad it helped
It is happening on my santa fe as well :(
What is the reason for binding? It looks like there is no much that can go wrong inside? Pressure sensor?
Good video... cheers from Portugal!👍
Thanks ✌
My sorento is currently having this replaced on it at dealer. Good
Video
Glad it helped
Good video. Any idea how much fluid goes in the coupling and what kinda fluid it uses. I’m going to assume low viscosity atf.
my 2014 Santa Fe v6 is making a thud when starting from a complete stop while turning, it will do it up to 3 times when not going completely straight from a stop. There is a used car warranty on the vehicle so took it to the toyota dealer where i bought it and they could not get it to do it, yet can hear and feel it and so can my mother. The toyota dealer took it to the Hyundai dealer and hyundai tech also said there is nothing wrong. They had the car for over two weeks between the two dealers! This video may help my case. was this vehicle you were working on make that clunk, thud, whatever you want to call it?
Would a brand new one of these sitting outside of the car spin both sides simultaneously? I bought a new one on ebay and when I spin one side the other side spins to is this normal?
My palisade 2022 in australia is getting this coupler replaced. It used to give thud/ shuddering on tight turns. I am not sure if i understand what is causing that shuddering but it will be replaced
Thinking about weld this two members together and pot an end once and for all to this problem. What do you think?
saludos amigo también aplica para la kia k2700 ? muchas gracias..... Greetings friend, does this also apply to the Kia K2700? thank you so much
Good vedio. Came to a stop and took off and a bang noise came in the back on my Hyundai kona 1.6T. Awd. It only happened once and everything ok now . I don't no wy it happened only 1 time.
Hi there,how can I change the oil in coupling unit please on a kia sportage 2011 awd?many thanks
Got 2011 Kia sportage automatic transmission
I start to have the same issue when I start turning and accelerating.. few months later it dose the same (back skipping or losing traction and when the car shifts to gear2- 3-4 on ward it’s transfers the bang or clonk to front left (can it be because of front transfer case ? As it starts at the back when starting to drive which is AWD is on than later front left means two wheels drive., that’s why I’m assuming it’s the front transfer case
Plz advise buddy
Thank you
thanks for sharing and the info
Glad you liked it.
interesting. i have a 2012 tucson that came up with a coupler pump circuit open code. no drivability issues but the car is essentially only front wheel drive atm. will be taking it in soon to inspect it. there’s actually a tsb on them where they want you to replace the pump and the harness. we’ll see how it goes
your vehicle is a 2012 so i would suggest that you do not change the part based on a tsb. there could be a broken or corroded wire which is causing the issue or even a module issue,
the last thing you want is to change a pump only to have the issue still there.
@@JLsAutoSolution How would one troubleshoot the wiring and or module? I have the same issue on a 2012 Sorento.
Merci pour cette fonctionnalité
Can you advise on the type of oil to be used for filling the coupler after potential repair? Thanks.
The rear diff coupler is non serviceable.
Please the spanner you use to remove the big nut on the flange size
Is this system the Haldex awd?
Hi. What torque for 32 Bolt?
I have to replace this on my telluride. Any chance you have a video on how to pull this unit and install a replacement?
I have one for a Santa Fe.
Interesting. Thx Jeremy 👍 Ps: How did you get the cutaway for the thumb nail?
thanks Ian.. google is your best friend lol. might need to change it.. but we will see
JL's Auto Solution Haha 🤣 Here’s me thinking...Wow his angle grinder skill is amazing. Like a milling machine! 🤣🤣🤣
@@TheGibby3340 lol.. with enough time and effort anything is possible... But then I remember its 2020 and Google has it all.
Take care.
The repair manual recommends resetting the ECU using GDS tool after coupler replacement. is there a DIY method and if not, what would happen if it's not reset? Thanks.
There is no need for the gds, just undo the battery if you do not have the tools let sit for 5 minutes then plug the battery back in. this will clear the values.
@@JLsAutoSolution Many thanks!
Does it needs to change hydraulic fluid? How is it possible to change hydraulic fluid? Do i need to complete disassembly it like you on video?
All units are filled up with coupling fluid (ultra-low viscosity ATF) prior to shipping. Inspection, fill-up, and replacement of coupling fluid is therefore not necessary (zero maintenance, lifetime fluid).(source Kia shop manual)
thanks for watching
Hi, the only maintenance for this AWD system is to change the oil of the differential right? Like the haldex on VAG cars ?
there is the oil in the differential and the oil in the transfercase- both should be done at 60000km.
thanks for watching
@@JLsAutoSolution thx, im looking to buy a kia sportage 2l 136hp with 67k km so i shoukd ask if it has been done
Hey , thanks for the vedio, i have a question, I have kia sorento 4WD 2015 have a issues when turning car keft of right gives pooping sound. I am having this issue for couple of years, niw dealer says that it needs to replace couplings assembly. What do you advise
Thanks
Najeeb
good morning, without testing the vehicle myself it is hard to say, you can always get a second opinion. sorry i cannot be of more help.
2012 Kia sportage here, rear wheels weren't spinning in snow even with the AWD lock, took it into Kia for servicing and they're saying I need to replace the Rear Diff 4WD hydraulic actuator, not a cheap fix, any ideas on what else to look out for?
make sure the drive shaft is turning.
when you get a new one since there non servicable do they come with oil in them i would think . surely it doesnt pump the rear end fluid or gear oil from the differential in there
No. It is completely seperate from the rear differential.. and it comes with the oil pre installed
@@JLsAutoSolution ok thank i appreciate all the help i called kia they want 1200 bucks for a new one i found the same oem coupler brand new on ebay for 600 so im gonna replace mine ateleast it doesnt look to hard to replace thanks
Hey... question... what fluid do they use... and is there a place to see how much fluid it needs?
I have a 2010 santa fe Awd ...
I'd like to try to rebuild it.. it's binding..
All units are filled up with coupling fluid (ultra-low viscosity ATF) prior to shipping. Inspection, fill-up, and replacement of coupling fluid is therefore not necessary (zero maintenance, lifetime fluid).(source: Kia shop manual)
I would suggest getting a used on from a scrap yard instead of rebuilding the old one. The Hyundai rear coupler of that year works a little differently then the one I am showing, and finding the root cause might be challenging.
thanks for watching
@@JLsAutoSolution thank you for replying...
Used is $650 rebuild is $850... new $1200 ... :(
Hi i have sorento 2023 8k code p195800 tells me to change 4WD COUPLING ACTUATOR ASSEMBLY REPLACEMENT
what happens if i will leave it with light on dash . and no torque in rear wheels!! any problems if i ignore it? thanks
What typle of oil gets put into this mini pump area? ATF?
Shell TF0870 possibly (specified for 2012 models)
I have a 2006 Tucson I'm wondering if this is the same thing they use in it. Whenever I enable 4wd sometimes the back wheels will lock up even when I reverse. I only can run it in 2wd at the moment.
no. the 2006 tucson uses a different system, scan for codes.
@potxman based on research i been doing. Seems its always in 4wd and the 4wd lock is just feature used to go over rocky terrain. It stops the wheels from spinning in sync so its easier to make it out of obstacles and mud.
Hi. I have a Sportage 2013 and when I turn left or right I can hear a boom boom sound coming from the back. What part do I need to change? The full casing with all the parts ? Thanks
It is very hard to tell what could be wrong, I would try to isolate the issue to front or rear of the vehicle then proceed with the diagnosis.
Thanks for watching
@@JLsAutoSolution If I unplug the wire at the rear , no more sounds
@@charlesmorier5013hi can you tell me please what was the problem, cause I have the same
@@astucesautomatisme4842 Hi. The problème is the coupling. All the clutch discs inside are rusted and grabbed
How much oil came out of it? You had no codes in the 4 drive error code
I have a 2016 Kia Sorento AWD and I asked the KIA tech about changing the oil in the differential and transfer case. He said they both were factory sealed and couldn't ever be changed???
The transfer case oil can be changed and should be changed at roughly 60000 km the rear differential oil should also be changed around that time. the only oil that is not replaceable is in the Coupling assembly that is mounted to the rear differential.
The 2016 model years are not listed but the system and oils used in the 2013-2014-2015-and up to 2021 are the same. Here is the owners manual- go to page 326 and where it says inspect- I would suggest you replace.
www.kia.ca/content/ownership/ownersmanual/13sorento_en.pdf
Thanks for watching
Hi Jeremy I have a 2010 Kia sportage 2.0 crdi AWD, it is permanently locked on 4wd, please let me know how I can permanently get it defaulted to 2wd only
You will need to scan the system for dtc's first, this will give you a direction to start your diagnostics. then a wiring diagram. then you will need theory and operation for your system,.
I know this seems like a lot but you can get all this for around 30$(us) on alldatadiy.com.
You will need a diagnostic scanner in order to scan all systems.
THanks for watching and the question.. If you get all this i will be willing to help you the best that I can remotely.
Found out, Redline MT-LV 70W/75W GL-4 is the oil.
Just curious, can the 4wd coupling be removed and use the different without it? Would it basically make the difference a posi?
I would like to say yes but i have not removed a rear differential and dissabled one for inspection. also you would need a conversion bracket in order to mount the drive shaft, which i do not believe exist. There is most probably a way to do a conversion.
Thanks for watching.
@@JLsAutoSolution Thanx for the info. It is a plausible solution to having a posi in the rear. I was thinking of making an adapter and then using one of them in a rwd conversion on a 1st gen Tiburon, but I'm not sure yet. May go with tube chassis and 4 link.
How to take care of this awd coupling? I Have Palisade awd and has been change this coupling under warranty, so can you share how to take care of this Part? Because Im worry this part gonna be fail again someday.
I have a Telluride and I feel like mine is starting to have issues. I'm curious to know also how to prevent this from happening again if I have it replaced.
@@acaciumI think that's a common problem.. Now I just want to know how to disable AWD system
Thank you
You're welcome
Hello. After driving an hour there is a banging sound when i stop and go. My question is can i disabel the awd?
Try pulling out the awd fuse to disable the awd ecu
Sabes donde puedo encontrar el sello que retiene el aceite, no tengo el numero de parte y no puedo encontrarlo en internet
para que vehiculo es ¿Y a qué sello te refieres? eje o eje de transmisión
Changed mine and now the all wheel drive light is on. It’s wasnot before. Any suggestions?
The real way would be to diagnose the problem with relevant dtc's if any.
BUTTTTTTTTT......
check connection at awd motor, perform reset if available. if that does not work and you put a used unit on I would suggest swapping the electronics over.
hello my friend please I need know type hydraulic this and how much ml liter .. thanks.
the type of oil that goes into the coupling is unknown due to it being unserviceable..
@@JLsAutoSolution TF 0870 or Ravenol DTF 1. Capacity is listed at 485ml, can't be sure of that as it's not "servicable" But I collected 350ml at least from mine fully stripped down and likely lost some. I put 400ml into one I removed the fill plug, nothing came out. Functioning fine as is and nothing out of the breather yet, fingers crossed
TF 0870 or Ravenol DTF 1.
Great video. I believe that's what's gone on my Santa Fe as well. The other day I accelerated from a red light and I heard a clunk around the rear end of the car. I noticed it would stop passed 50 km/h driving straight. It was bad during takeoffs from red lights or stop signs, or while going left/right. Since I was away from home, I asked a mechanic to remove the drive shaft and the noise stopped completely. This makes my AWD car a FWD one, at least until I can get it fixed. My question is this: does my issue sound related to the 4wd coupling? I also noticed, when they removed the drive shaft (the shaft that goes from the front diff all the way to the rear diff) that there was a oily wet spot under the 4wd coupling. Is it possible the clunky problem is related to the leak, aka to the loss of pressure within the coupling?
it very well could be, but I am not there.. do not forget that the coupling is attached to the rear differential and that could possibly leak also.. there is also u-joints that could make a clunking sound or possibly the transfercase--/ptu or a worn out center bearing.
the coupling is normally accompanied by a shake or shimmy while turning and accelerating. unless there is excessive wear caused by leaking or worn out parts.
thanks for watching
@@JLsAutoSolution Thank you for the details. My vehicle is with the dealership right now and they seem to think it's the ptu. They will need to open it up and confirm the worn out splines but the issue seems to be way too common so they should have "experience".
@@OviCornea hello and thank you for the kind words.. now the ptu( power transfer unit) is up at the front front of the vehicle and is connected to the transmission.
its job is to take and transfer the output power from the transmission and send it down towards the rear of the vehicle.
in the video I show what the coupling system is(at the rear differential, not to be confused with the ptu) .
Thanks for watching.
@@JLsAutoSolution Yes sir. Initially I thought it was the 4wd coupling, but the dealership said the problem is at the PTU and the noise must have transferred through the drive shaft somehow for me to hear it in the back. They lifter my car up and showed me the source of the noise while manually rotating the drive shaft. They've since open it up and confirmed there were some worn out gears and splines.
@@OviCornea Salut, Am si eu aceeasi masina cu aceasi problema, cat te-a costat reparatia? Multumesc
What makes it roll in park?
The vehicle is not in park or the park pin is broken(automatic Transmission)
The vehicle is not in gear(manual) parking brake is not applied
Thanks for watching
Ciao all'interno che olio ci va? Il livello si fa dal tappo a brugola?
Ciao,
L'olio che si trova all'interno dell'unità di accoppiamento è un fluido a vita.
Se è fuoriuscito, l'opzione migliore a questo punto sarebbe sostituire l'unità di accoppiamento.
Tutte le unità vengono riempite con fluido di accoppiamento (ATF a viscosità ultra bassa) prima della spedizione. L'ispezione, il rabbocco e la sostituzione del fluido di accoppiamento non sono quindi necessari (zero manutenzione, fluido a vita). (fonte kia)
Spero che questo aiuti.
Google ha usato per aiutare a tradurre.
@@JLsAutoSolution ciao allora io ho dovuto far revisionare il diffezrenziale a causa del dado che era lento e mi ha fatto saltare il cuscinetto, però prima avevo staccato la pompa con la fuoriuscita di tutto l'olio,adesso dopo aver fatto revisionare il differenziale la macchina va bene,ma si accende la spia del differenziale.Ho rifatto il livello dell'olio del coupling con olio tf0807 ma sono riuscito a mettere dentro 0,2 litri mentre il .manuale d'officina dice 0,45 il livello L'ho fatto dal tappo a brugola
Mi sai dire se il livello dell'olio può far accendere la spia?
non c'è sensore di livello nel differenziale o nel gruppo giunto.
c'è una pompa (motore) e il sensore di pressione
una luce accesa indica un problema.. meglio far scansionare il veicolo per i codici, in questo modo non si possono indovinare.
so i take it uses the gear oil in the rear end i made the mistake of changing my rear end gear oil i just used snythitic gear oil well it didnt take long for this to start sliping so i bought the limited slip gear oil what a big differnce only splips or jerk once in awhile i know after i replace this coupler i will always use valvoline synthitic limited slip gear oil
yes there are 2 sections.. one is the coupling and one is the differential.. The coupling is not serviceable. but he differential is..
Valvoline does make a very good product but always be sure to put the correct fluids in your vehicle, whether it be transmission or differential fluid.. your auto parts store should be able to help you with that..
Thanks for watching
@@JLsAutoSolution ok i thought the oil was pumped in there to the clutch plates its funny cause after i changed the rear end fluid about month or 2 later it started skipping when you turned a corner or backed up turning i thought it was the rear end going out so i changed it with limited slip gear oil still does it not al the time i was hoping it was this and not the rear end my sorento has 74,000 miles on it thanks for the info do ya think just my coupler is bad
@@mikestowe6136 hit the 4wheel lock button. Then go on a little drive with lots of turns.. you should feel skipping on pretty much every turn... Make sure you are accelerating while turning(not coasting)..
@@JLsAutoSolution ok the other day i pushed the button multiple times cause i thought the clutch plates in the coupler need lubericated lol it doesnt skip all the time but ya mainly when turning i will try it here in about n hr
What if you remove the clutch's & weld the shaft permanently?
you could but would give a full time 4x4 and would probably damage the units. or codes might be set due to an error in the control logic to split the wheel control
Did you did it? Thinking about this too
@@ghaziza80 I did, car didn't like it. The wheels started chirping like crazy. I ended buying a new AWD coupling which for what I paid I could have gotten a whole rear end with coupling on eBay for cheaper. If I had to do it again I would just re tig weld the broken factory welds & let the system operate as it should.
Are these a common problem with Hyundai and Kia SUV vehicles.
enough so, that they have an updated part.
@@JLsAutoSolution I have a 2014 Santa fe sport 37000 KM and mine is gone. Thought of buying a new one not now Thank You for the great video and information you gave us.
@@JLsAutoSolution Is there a way to make sure my purchase is the updated part as opposed to the faulty original?
Nice informative video but please, please, please get a tripod or a magnetic camera mount. I cannot watch all the wobbly video, it makes me feel sick. Sorry!
LOL.. I completely agree with you.. I have one but it not always close by.. Sorry.
thanks for watching
Hello,
I watched your video "2016 sorento 4wd coupling replacement” Great work, thank you.
Curios if you might have any insight to my situation. I replaced the AWD coupling part number 47800 3B520 on my son's Kia Sportage EX. Unfortunately I did not notice that the electrical connection on the new coupling oil pump has three pins compared to two on the old coupling oil pump. I also ordered a new wire harness part number 47891 3B310 but that also has two pins.
Do you know of a newer wire harness that might work?
Or can I swap the oil pump from the old coupling to the new coupling? They look identical.
Thank you!😀
FYI...The correct part number for the updated Harness 4WD Coupling 47891 3B310FFF.
@@reggieeldrealtor6827 thank you
question (from Sweden) I have a Kia Sorento 2011 automatic transmission (crdi) and also no 4wd. My symptoms were when I put it in reverse and turned it sounded like the splines were not engaging and the sound was quite loud. Wasn't 4wd locked. And the car was only front-wheel drive. And the sound was heard as it came from the rear axle. I have also seen on RUclips that it is common for the front transfer case to have problems with the splines rusting and being destroyed. But am pretty sure it came from the rear axle. Is it likely from my description that it is so🤔 And how can you determine if it is the differential. Thanks in advance❗If anyone can confirm my teroi on this.
Hey buddy, your video says that you are going to show us how the coupler works. You did not show that. You are showing what parts are inside. Plus, you are so confused by talking and talking that you are swallowing the ands of the words..... Your video will be good if someone wants to rebuild the coupler and not to see how it works....
Sorry, don't take it as insult. I am just trying to help you understand what you are missing in your video.