Transmission problems

[Keithj1983]

Maybe these techs are just idiots then cause the only thing that's been stopping me from having my solenoids changed is everyone on here saying it cant be done and the unit needs replacement entirely to fix. If it can be done, I'm definitely doing it cause the way my trans acts up it cant be anything but the solenoids. Every drive it shifts differently. Sometimes smooth, sometimes a mix of smooth and a few rough shifts, sometimes all rough shifts. Has to be the solenoids cause they open/close to let fluid pressure in/out and if they're stuck it could definitely drive and act up randomly. How much were the parts?

I've got a 13 2.0t and it shifts hard into 3rd and 5th. I can disconnect the battery and reset it then it shifts hard for around 80 miles then it shifts fine. I've changed the tcu and that didnt help I'm just desperate to find out any advice would be great thanks

 

[Misa3.8]

Have you

I've got a 13 2.0t and it shifts hard into 3rd and 5th. I can disconnect the battery and reset it then it shifts hard for around 80 miles then it shifts fine. I've changed the tcu and that didnt help I'm just desperate to find out any advice would be great thanks

Have you done a drain and fill on your genesis yet?

 

[Keithj1983]

Have you
Have you done a drain and fill on your genesis yet?

No it's a sealed unit

 

[Misa3.8]

No it's a sealed unit

Do you have a manuel or automatic?

 

[Keithj1983]

Do you have a manuel or automatic?

8 speed auto

 

[Misa3.8]

8 speed auto

You dont have to unseal the tranny to do a drain and fill but if you wanted too you could I've dropped my pan and valve body to switch out solenoids.

 

[Keithj1983]

You dont have to unseal the tranny to do a drain and fill but if you wanted too you could I've dropped my pan and valve body to switch out solenoids.

How do I do it and you think it's the solenoids

 

[Rspected]

127,00miles on 2012 sedan. Started having transmission shifting problem that I’ve read others experienced. Question is a new transmission in my immediate future or should I ‘invest’ in fluid change which looks to be very expensive also. Please advise - I don’t have confidence in my dealership’s service dept

The fluid change is only expensive for the 3.8 or 4.6 predated to 2012. 2012+ all use the 8 speed hyundai transmission and the fluid is about $17 a quart (had mine done recently). They may upcharge you a little on that but the fluid change and a full synthetic oil change with 7.2 qts was $350 out the door so the fluid change at 5 quarts should be about $150-200 depending on labor rates at your dealer. I'd recommend you start there, do a change after another 1k miles or so and then do one following change and by that time you should have almost all new fluid in there. If the problem isnt fixed, you spent around $700 after taxes and didnt fix it. But if it does fix it, it was $700. The MSRP on a new 8 speed is about $8000 before labor costs and a used unit is about $1500 plus about $1000 labor and is a gamble. Ball's in your court brother.

 

[Rspected]

How do I do it and you think it's the solenoids

Could be the solenoids. They open and close electronically to allow the fluid necessary to create the pressure needed during gear shifts. They open and close based on signals from the ECU/TCU telling it that it's time to shift. If the fluid is dirty (or otherwise they just failed) it could cause them to stick open or closed, and if stuck closed, the pressure of the fluid moving could push it open and then the fluid will rush in slightly late and cause what you feel as a hard shift. When operating properly, the Genesis trans drives like a Rolls where you barely feel any shifting. Creates luxurious drive.

Since you say it gets better after a battery reset, that could mean its electronics related rather than internal problems. The genesis has a feature that lets the car learn your driving habits and adjusts accordingly. Resetting the battery resets the learning and it will learn how you currently drive and probably shift better. I reset mine about once every month and it does tend to drive smoother after doing so. Another option is get the drain and fills done (I've had them done. Can still do drain and fills on a sealed unit, just really hard to do a flush if you dont have special equipment) and have the dealer reset the TCU learning (different from the ECU learning) and it will remap your shift points based on driving habits. Be mindful if you do this, it will take the car a few hours to adjust and shifting may be extremely rough at first while its learning. When they did mine, I left and second slipped like 400 rpm then slammed into gear (never happened before the reset), I immediately turned back to the dealer. Dealer told me drive it a few days and let it learn then come back if still no good. I did. After the 2nd day it started shifting much nicer. Fast forward several months and I'm still having issues, it didn't fix the problem, but it did help temporarily. I think it's all electronics related which keeps pointing to solenoids. Only thing that makes sense based on my knowledge of transmissions. Let us know how it works out

 

[RemyBluePearl]

Do you have a manuel or automatic?

Curious where are you located? Also I have a 2012 3.8L 86k and going into 2nd and 3rd I feel it is slipping into gear which has a mind of its own. I’d assume I should change the solenoids or change fluid first which I haven’t

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[Genicyst]

Lol to the flush suggestions...

Hyundai genesis is a broken sedan. Period. When life gives you a Genesis, make lemonade...

Im on my 2nd tranny (50k km brand new factory build/dealer install) which is doing the same thing that the 1st one (160k km) did and OP's and everybody elses here. I have yet to see the dealer about the 2nd one because I am hoping it will disappear magically (see below).

I suspect its one of two things so anybody that has experienced this please answer this - do you ever engage the autohold feature and or the electronic parking brake?

EVERY single time I did engage those features, the following drive would be a shifty, banging ride. It goes back to smoothness shortly in time but the time will come where it wont go back to smooth and gets worse and worse, slipping and banging, revving and missing...

One time the autohold didnt engage the e-brake and the car began rolling as I was getting out of the car!!!! Luckily it engaged the ebrake a couple feet later so I didnt end up in a ditch or getting my foot run over.

Whatever the case, it still doesnt excuse Hyundai for not owning up to this defective product. I mean the consensus is there, right? How many more people have to be victimized?

Hyundai - get your sh*t together and own up..

edit - 2012 3.8L Sedan

 

[Rspected]

Lol to the flush suggestions...

Hyundai genesis is a broken sedan. Period. When life gives you a Genesis, make lemonade...

Im on my 2nd tranny (50k km brand new factory build/dealer install) which is doing the same thing that the 1st one (160k km) did and OP's and everybody elses here. I have yet to see the dealer about the 2nd one because I am hoping it will disappear magically (see below).

I suspect its one of two things so anybody that has experienced this please answer this - do you ever engage the autohold feature and or the electronic parking brake?

EVERY single time I did engage those features, the following drive would be a shifty, banging ride. It goes back to smoothness shortly in time but the time will come where it wont go back to smooth and gets worse and worse, slipping and banging, revving and missing...

One time the autohold didnt engage the e-brake and the car began rolling as I was getting out of the car!!!! Luckily it engaged the ebrake a couple feet later so I didnt end up in a ditch or getting my foot run over.

Whatever the case, it still doesnt excuse Hyundai for not owning up to this defective product. I mean the consensus is there, right? How many more people have to be victimized?

Hyundai - get your sh*t together and own up..

edit - 2012 3.8L Sedan

The autohold function is not meant for you to get out of the car.... its meant for you to relax your foot from holding the brake at lights only... pretty sure it will disengage should a door be open when its on... but yeah we all use those but those have nothing to do with a transmission so im not sure how youre even making a connection here to that being the problem. The problem is shift solenoids

 

[Genicyst]

The autohold function is not meant for you to get out of the car.... its meant for you to relax your foot from holding the brake at lights only... pretty sure it will disengage should a door be open when its on... but yeah we all use those but those have nothing to do with a transmission so im not sure how youre even making a connection here to that being the problem. The problem is shift solenoids

1a

The autohold function is not meant for you to get out of the car.... its meant for you to relax your foot from holding the brake at lights only... pretty sure it will disengage should a door be open when its on... but yeah we all use those but those have nothing to do with a transmission so im not sure how youre even making a connection here to that being the problem. The problem is shift solenoids

What the flip? I thought that post got deleted?!?.... Anyway.

I am not a mechanic. I am just stating what I have observed.

 

[Rspected]

1a


What the flip? I thought that post got deleted?!?.... Anyway.

I am not a mechanic. I am just stating what I have observed.

Yeah autohold is just your ebrake engaging when the car comes to a complete, and then disengaging when you press the gas. E brake is not in any way connected to the transmission

 

[Genicyst]

Yeah autohold is just your ebrake engaging when the car comes to a complete, and then disengaging when you press the gas. E brake is not in any way connected to the transmission

Thats great, but I am telling you after everytime I finish using it, disengage and begin driving, the tranny starts banging into gears, slipping out of and not catching gears. I dont want to try it again as it has settled back down. I still have to be careful not too rev out of time and be mindful of the throttle because it still does bang into gears and throttle does blow open from time to time.

But arguing what is or isnt causing the malfunction in mine and countless other vehicles derails the fact that cars like this are not only defective but dangerous to drive and Hyundai should do the right thing.

 

[Genesis28]

I didn't at first i just knew it was solenoid a on my scanner but i didn't know which ones till i emailed hyundai and they told me that solenoid a could be 3 solenoids so i changed 2 of them and i also changed 4th and 5th one's because when i tested the solenoids they did not open.and honestly there was no guides i kinda just used common sence from working on other automatic transmissions . i also changed my filter since the pan was off already .

My 2012 3.8 gdi genesis got stuck on 5th gear a couple months back, prior to that i was experiencing hard shifting from 1 to 2nd and 2nd to 3rd gear. I personally dropped the pan and removed my valve body and swapped out my solenoids. Now my car is running great no shifting issues.

Hello can you tell me exactly which ones you replaced. are you still drinving the car with no issues? I have the exact same issues. You said you replaced 6, I see 8 on the diagrahm list and im not sure what gears any of them are for.Thanks

 

[Misa3.8]

Hello can you tell me exactly which ones you replaced. are you still drinving the car with no issues? I have the exact same issues. You said you replaced 6, I see 8 on the diagrahm list and im not sure what gears any of them are for.Thanks

Hello, yes I am still driving the car it's my daily. There is 6 main solenoids colors black brown red and yellow I believe. Those are the shift solenoids. There is a video on YouTube about the 8 speed transmission and it pin points the 6 solenoids pretty good

 

[Genesis28]

Hello, yes I am still driving the car it's my daily. There is 6 main solenoids colors black brown red and yellow I believe. Those are the shift solenoids. There is a video on YouTube about the 8 speed transmission and it pin points the 6 solenoids pretty good

Thanks for the reply, had my car to the dealership and there are no codes to pin point the problem so I think I’m going to be changing the solenoids. Thank you

 

[Genesis28]

Could be the solenoids. They open and close electronically to allow the fluid necessary to create the pressure needed during gear shifts. They open and close based on signals from the ECU/TCU telling it that it's time to shift. If the fluid is dirty (or otherwise they just failed) it could cause them to stick open or closed, and if stuck closed, the pressure of the fluid moving could push it open and then the fluid will rush in slightly late and cause what you feel as a hard shift. When operating properly, the Genesis trans drives like a Rolls where you barely feel any shifting. Creates luxurious drive.

Since you say it gets better after a battery reset, that could mean its electronics related rather than internal problems. The genesis has a feature that lets the car learn your driving habits and adjusts accordingly. Resetting the battery resets the learning and it will learn how you currently drive and probably shift better. I reset mine about once every month and it does tend to drive smoother after doing so. Another option is get the drain and fills done (I've had them done. Can still do drain and fills on a sealed unit, just really hard to do a flush if you dont have special equipment) and have the dealer reset the TCU learning (different from the ECU learning) and it will remap your shift points based on driving habits. Be mindful if you do this, it will take the car a few hours to adjust and shifting may be extremely rough at first while its learning. When they did mine, I left and second slipped like 400 rpm then slammed into gear (never happened before the reset), I immediately turned back to the dealer. Dealer told me drive it a few days and let it learn then come back if still no good. I did. After the 2nd day it started shifting much nicer. Fast forward several months and I'm still having issues, it didn't fix the problem, but it did help temporarily. I think it's all electronics related which keeps pointing to solenoids. Only thing that makes sense based on my knowledge of transmissions. Let us know how it works out

 

[Genesis28]

Could be the solenoids. They open and close electronically to allow the fluid necessary to create the pressure needed during gear shifts. They open and close based on signals from the ECU/TCU telling it that it's time to shift. If the fluid is dirty (or otherwise they just failed) it could cause them to stick open or closed, and if stuck closed, the pressure of the fluid moving could push it open and then the fluid will rush in slightly late and cause what you feel as a hard shift. When operating properly, the Genesis trans drives like a Rolls where you barely feel any shifting. Creates luxurious drive.

Since you say it gets better after a battery reset, that could mean its electronics related rather than internal problems. The genesis has a feature that lets the car learn your driving habits and adjusts accordingly. Resetting the battery resets the learning and it will learn how you currently drive and probably shift better. I reset mine about once every month and it does tend to drive smoother after doing so. Another option is get the drain and fills done (I've had them done. Can still do drain and fills on a sealed unit, just really hard to do a flush if you dont have special equipment) and have the dealer reset the TCU learning (different from the ECU learning) and it will remap your shift points based on driving habits. Be mindful if you do this, it will take the car a few hours to adjust and shifting may be extremely rough at first while its learning. When they did mine, I left and second slipped like 400 rpm then slammed into gear (never happened before the reset), I immediately turned back to the dealer. Dealer told me drive it a few days and let it learn then come back if still no good. I did. After the 2nd day it started shifting much nicer. Fast forward several months and I'm still having issues, it didn't fix the problem, but it did help temporarily. I think it's all electronics related which keeps pointing to solenoids. Only thing that makes sense based on my knowledge of transmissions. Let us know how it works out

Could be the solenoids. They open and close electronically to allow the fluid necessary to create the pressure needed during gear shifts. They open and close based on signals from the ECU/TCU telling it that it's time to shift. If the fluid is dirty (or otherwise they just failed) it could cause them to stick open or closed, and if stuck closed, the pressure of the fluid moving could push it open and then the fluid will rush in slightly late and cause what you feel as a hard shift. When operating properly, the Genesis trans drives like a Rolls where you barely feel any shifting. Creates luxurious drive.

Since you say it gets better after a battery reset, that could mean its electronics related rather than internal problems. The genesis has a feature that lets the car learn your driving habits and adjusts accordingly. Resetting the battery resets the learning and it will learn how you currently drive and probably shift better. I reset mine about once every month and it does tend to drive smoother after doing so. Another option is get the drain and fills done (I've had them done. Can still do drain and fills on a sealed unit, just really hard to do a flush if you dont have special equipment) and have the dealer reset the TCU learning (different from the ECU learning) and it will remap your shift points based on driving habits. Be mindful if you do this, it will take the car a few hours to adjust and shifting may be extremely rough at first while its learning. When they did mine, I left and second slipped like 400 rpm then slammed into gear (never happened before the reset), I immediately turned back to the dealer. Dealer told me drive it a few days and let it learn then come back if still no good. I did. After the 2nd day it started shifting much nicer. Fast forward several months and I'm still having issues, it didn't fix the problem, but it did help temporarily. I think it's all electronics related which keeps pointing to solenoids. Only thing that makes sense based on my knowledge of transmissions. Let us know how it works out
Hello I was wondering if you changed your solenoids, I’m having the same problem and think changing them is my only hope, and was wondering how you made out?