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2021 Santa Fe Transmission shudder

32K views 86 replies 39 participants last post by  Suhail Halai  
#1 ·
I have a Calligraphy with the 8 speed dual clutch transmission. It is just over 2 months old with 5500 miles on it. Pretty much since I drove it home I experience a definite shudder when up shifting during moderate acceleration. It is very noticeable between 1st and 2nd and 2nd to 3rd. I'm sure it does it between other gears but the sensation to feel it is not as strong. I had it to the dealer just a week ago and they are not concerned and suggest that it is the nature of the double clutching. I haven't seen any other posts about this in my searching but if there is another please direct me. Your comments and thoughts are appreciate. Thanks.
 
#3 ·
My 8 speed shifts smoothly no shutters. Did you go with a test drive with a service person to show the problem?
If he still says it is normal then you should find a new dealer.
Yes, I did ride with the service manager. He wasn't aggressive enough to get it to do it repeatedly. He did acknowledge that it happened. I will probably take it to another dealer later this fall. (It will be garaged soon while we RV travel.)
 
#5 ·
I have a 2021 SF Limited, 8000 miles, and it definitely has a shudder when I come to a complete stop. It's more pronounced when I'm stopping quickly. If I roll to a very slow stop, if is less noticeable. There is no shudder when accelerating. I have a service appointment next week at the dealer. This is definitely not normal nor acceptable. I will post an update after my service visit.
 
#15 ·
This is an update on my 2021 Santa Fe Limited transmission shudder. I took it to one dealer and the problem would absolutely not duplicate once I got there. I stayed for 30 minutes driving around the neighborhood...nothing. Went home and the shuddering came back the next day.

About 3 days later, I went to a different dealer, only because they could get me in on that particular day. The shuddering was present when I got there. After waiting a couple of hours, they told me they could not detect a problem, but they did "re-learn" the transmission. Service rep's words, not mine. When I pressed him for an explanation he said they adjusted some software settings. Curiously, they never admitted there was a problem.

Well, PROBLEM SOLVED! No shuddering what so ever since that trip to the Hyundai dealer service center. It's been several weeks since the "fix", I've had no problems and my usual passengers have noticed the change as well.

I'm now very pleased with the current transmission performance.
 
#6 ·
I have the same problem with my 2021 Santa Fe. Your description of it showing up around 2nd gear is exactly what I have been experiencing. I'm currently on a cross country trip and traveling through the mountains going up hill it really is apparent. Other than that the vehicle has been perfect with amazing performance from that 2.5 turbo flattening the mountain roads.in top gears..
 
#8 ·
I have a 2021 Santa Fe Calligraphy and have experienced one occurrence for sure when starting from a stop. Transmission would not get out of first /second as I went through an intersection . Rev's went to about 4000 rpm with no increase in speed beyond 10-15 miles per hour. Hard to see gauges as I was making a turn through traffic on a large intersection. Once I was through stopped and restarted and went with no issues. One other "shudder" from start but shifts carried on properly after a second or so. 3500 km on vehicle.
 
#9 ·
Update on my..umm..er..."Shudder". 30 minutes after my last post it occurred again. This time I was on a straight quiet road after a start from stop. Revs were again up to 4000 and speed 15-20 mph, however as things were quiet traffic wise I was able to notice that the Shift indicator was on "1" not "D" as normal. Stopped and restarted all was normal. Now, the only way the "1" gets indicated under normal conditions is if the paddle shifter is used. (correct me if I am wrong). Sooo..apparently if you are listening to SiriusXm and a good song goes on and you are boppin' to the beat and you drive in the 10/2 position on the wheel you just may, perhaps. possibly hit the paddle shift into "1" as you take off and you may stay in first till you shift out of it!. Not sure when the vehicle will automatically take you out of first gear but it is excess of 4000 rpm at least.

So note to self...keep fingers off paddles, or listen to just Love Songs.
 
#11 ·
Are you in Sport mode, that and the Snow mode are the only ones that will keep the gear you selected on the paddle shifter. The other ones will drop down to Drive if you don't hit the paddle again after a few seconds.
 
#16 ·
It is possible because hydraulic valve characteristic is not very consistent, that is the experience at work. We have to add parameters in the control system just to account for the odd ones that are a bit different even thought they are still within the manufacturer specification.
 
#27 ·
I own a Santa Fe Caligraphy 2021 since April 2021. For the first 4000 miles, the car was extraordinary, with no issues, not jerky transmission or shuddering. After 4000 miles the transmission started being jerky and the problem not only persists 3000 plus miles later is getting worse. Now it has a very violent shuddering and a lot of other noises and performance issues at low speed. The problem: every time I come to a stop or close to a stop the transmission will change in a matter of seconds 2 gears or at least this is how it feels and sounds. Sometimes it feels like just one shift very rough in any condition. Driving in stop-and-go traffic is nothing but a nightmare. It does it 9 times out of 10 to give you an idea. It's very rare if it does have this behavior. I tried all drive modes and except for the Sport mode, this problem occurs on all of them. Sport mode is the only drive mode where this problem does not manifest, mostly because the car sits at a much higher RPM. The jerkiness, the shaking, the shuddering, and vibrations are so powerful and most of the time loud that the entire car is shaking as you got rear-ended or similar to the transmission having loss bolts and moving back and forth. The minor things as listed in the manual and that are normal about this type of transmission you can feel a slight vibration on the brake pedal or some shifting but those most of the time are not noticeable. It does this only when downshifting and only when are close or already come to a stop. The way it feels I would say from the 3rd to the 1st gear is a mess and transmission has no idea what is doing or is something bad with this transmission. The clunking noise that is also very loud and the shake of the car is being felt by all passengers is nothing normal or not noticeable about it. A lot of time the transmission is shifting the lower gears after I stop the car. This is so dangerous because if I do not seriously keep the foot on the brake pedal the car will move forward, that’s how powerful the **** and the shake of the car are. A lot of times I am just wondering how long it will take until this car will drop the transmission in the middle of the road. The dealer verified the car and they acknowledge that it does all these but they said is normal. Is nothing normal about such behavior in any car and with any transmission. Now at over 8000 miles these symptoms just got worse and it does the same loud and violent ‘’boom sound’’ even when I am backing up from the parking lot in R and the original symptoms just got even louder and more violent/roughness. I am not going to accept an answer like is normal or a defect doesn’t manifest. There seems to be very usual used by manufacturers when no check engine light is on or any other very visible issues. I also tried to sell it but when I went to get the car appraised, the very first stop when test drives it, I've been asked what is with this shuddering. Unless Hyundai bothers to fix this issue, I am left with option one get about 4000$ less in trade because they will take it to auction because no one will buy it after they test it, or option two lemon law and buyback from manufacture. I am gathering documents and following lemon law procedure at this time, just in case I do need to go this route. Except this the car is exceptional. Hyundai seems to still have issues even with engines or transmissions, quality is not there.
 
#28 ·
If you've had your dealer check it and state it's 'normal' ask their sales guy to appraise it for trade-in. If he says it's got issues and knocks the price down, get the service manager in the conversation and get them to work out what they want to say.

I would also log a call with corporate, as there have been a number of cases where there has been an oil leak in the transmission resulting in the transmission having problems similar to what you have stated. Perhaps even request that the dealer check the oil level in the transmission (it's in their interest as the gearbox will fail if it's low).
 
#29 ·
I went to the dealership and after 3 hours we think the issue is resolved. At least for now is good, hopefully will stay like this. After test drive the tech acknowledged the rough/violent shaking is not normal. They got on the phone with Hyundai tech line and after back and forth with them and a lot of tests they reset the computer, did the re-learn procedure and they also found low selonoid fluid. According to the tech that itself is a problem because that selonoid is the one that activates the clutch changes. Hopefully this solution will help others on this forum with similar issues.
 
#35 ·
2021 mated to the 2.5T engines. Same as in the Sonata's with the 2.5T's. Both models had issues in the Jan-Mar '21 build timeframes but no failures like those have been reported in the past year.

Stick exactly with the engine and DCT break-in procedure in the manual (keeping the RPM in the 2000-4000 range for the first 1K miles or so) and you should be good to go.
 
#36 · (Edited)
Thanks man, but where the **** is that info? HATE Korean manuals man. Not sure if it's the ****** translation, or what, but nothing makes sense. Can't find anything on break-in, running-in, and it's not on 'driving your vehicle' section 6. I'd appreciate if you remember at least which section it was. Thank you.

EDIT: Found it. On page 1-7. Crazy that is not anywhere on any index. Anyway, it says for 600 miles maintain rpm from 2K to 4K, therefore, driving in sport mode... which I always do. Otherwise, the engine basically runs just above idle, which is crazy. Also no hard braking, and that kind of thing (no towing, etc).
 
#38 ·
Thanks man, but where the **** is that info? HATE Korean manuals man. Not sure if it's the ****** translation, or what, but nothing makes sense. Can't find anything on break-in, running-in, and it's not on 'driving your vehicle' section 6. I'd appreciate if you remember at least which section it was. Thank you.

EDIT: Found it. On page 1-7. Crazy that is not anywhere on any index. Anyway, it says for 600 miles maintain rpm from 2K to 4K, therefore, driving in sport mode... which I always do. Otherwise, the engine basically runs just above idle, which is crazy. Also no hard braking, and that kind of thing (no towing, etc).
Yup, that's what it is. As I was paranoid, I just keep doing it and tapering off after 800 miles or so. It's basically so the rings will seat correctly. Also the TCU is in it's leaning period for the first couple thousand miles when it will greatly smooth out. There is a procedure that if they have to replace the transmission or TCU, on how to upload the data from the old TCU to the new one so that it doesn't have to relearn how you drive again.
 
#39 ·
I have been following this forum for a couple months due to transmission issues with our 2021 Santa Fe Limited 2.5
I was able to make an appointment at our local dealership and wrote the tech a long list of persistent problems quoting this forum. Exaxmple: Jolting into 1st / Reverse. Shakiness in stop and go. Slamming when coming to a moderate stop etc.

Resoltion: They claimed that as of yesterday 08/18/2022 hyundai has announced a recall for those transmissions. I haven't been able to find it online (yet) but after they called me back they said they resolved the issue. They replaced the control module or updated the software (can't tell from the work order) and it was a SIGNIFICANT improvement from how I brought it there. My wife and I are going to drive it around but as of right now it seems to be fixed. Will post again is problem comes back up and I can post the warranty repair order if it's helpful to anyone.
 
#40 ·
I have been following this forum for a couple months due to transmission issues with our 2021 Santa Fe Limited 2.5
I was able to make an appointment at our local dealership and wrote the tech a long list of persistent problems quoting this forum. Exaxmple: Jolting into 1st / Reverse. Shakiness in stop and go. Slamming when coming to a moderate stop etc.
What is the build date of your Limited? It's on the B-Pillar right under the VIN.

Also do you have the 2.5 or the 2.5 Turbo?
 
#44 ·
Hope we can learn of a VIN range soon, or a build-date range. At least one 2022 reported is almost 7 months earlier than mine, so it's possible only 2021s, and early 2022s, are involved. I hope so, but want to know either way. If mine needs it too, I'd like to get it done before embarking on our 5K-mile long trip Sep 09. It's almost 1K miles now, and I'm not going to use it prior to the trip. Build date is 4/9/22, by the way.
 
#47 ·
One final comment here about our 2022 Santa Fe DCT failure and our demise. Our case met the criteria and was accepted by BBB Auto Line last week. We were assigned a Dispute Resolution Specialist at that time. Today, 08/22/22 - I have been informed that Hyundai has agreed to work with BBB and myself (exact words, "in a back-and-forth fashion") to resolve this matter within the next 2 weeks. After this 2 week period - should Hyundai or I not find a mutual agreement - then the case goes into arbitration. However, I really don't expect this case to escalate that far. I firmly believe Hyundai will step up to the plate and do what is right. We have formally offered to accept an equal or newer replacement SF Limited. Preferably a 2023 - as I have found 2 nearby that are acceptable to the trim we had before and price range. Just a wait and see game now.
 
#50 ·
I'm on the same boat too. I just got an update from BBB autoline on my case (eligible), which kicks off the 2-week window before it goes into arbitration. I think my 21 Sante Fe Calli (purchased on 4/17/2021 - likely Jan-Mar build) has the same issue, including the blue link email notification. It has been sitting at the dealer for the last 50+ days with no update. I am hoping to get either a replacement or a buyback.
 
#48 · (Edited)
I didn't know the BBB could be a conduit to handle a lemon law dispute (MUCH better than having to hire a lawyer, IMO), but good to know at least it's a possibility. Plus ALWAYS better to leave lawyers out, although I'm sure the BBB has lawyers of their own, but with the huge exception they're not looking at making a killing with damages, etc., but just to resolve the issue (right?). Hope I never have to go thru that, but can't afford to just dump a vehicle I have trouble with (and lose my butt in the process) anymore (thanks cancer), so if something like that was to happen to me, I'd have to go thru the same process. And not having absolutely anything else in my radar, I'd gladly settle with a new SF too. I really like mine too, and how it drives with the DCT-8, but I knew all along it wasn't a smart move on Hyundai's part to put that thing on a family SUV (or all other regular 1.6T vehicles with the DCT-7, for that matter). Hope it holds up on my SUV though :); we'll see. Glad to hear your case was resolved like that; good luck with the new one.
 
#49 ·
Thanks Brian L. for the important and pertinent posts/ info. The DCT tranny is my one and only concern with this car albiet not keeping me awake at night. Before purchasing I had spoken at length with my Mechanic about the actual car itself and the brand-the DCT was mentioned- saved me mucho time. Being proactive all my life at 3k I will take it in for a tranny fluid check.