The mystery about transmission hard shift is finally revealed (TSB for HARSH 2~3, 3~4 OR 4~5 UPSHIFT)

[Husam]

As the previous owner of a 2015 3.8 with the Hyundai Extended Warranty, I still experienced claim/honouring issues. Bought the car and Warranty extension out of Province, local Dealer repeatedly declined to acknowledge or respect it.

Had issues with intermittent flickering headlights, Seat Heater among others, and Dealer always initially declined to acknowledge or address issue, I assume hoping I would go away. When I pointed out the TSB issue for the lights, the Dealers response was 'Bring it in when the issue happens", which was a patently absurd as it of course only happened at night when the Dealership was closed. When I submitted the TSB, they claimed it was NOT covered under the Hyundai Ext Warranty. Took the matter up with several members of Hyundai Canada's Senior Management, and after several weeks they conceded with the astonishing caveat that they would only honour it this one time! With the Seat Heater issue, Dealer diagnosed it as a failed heater element and that the resolution was to replace the whole seat at my own $3000cdn cost. After again taking it up with Hyundai Canada, it suddenly WAS covered and Dealer claimed to have just replaced the seat cushion, which I found hard to believe as the seat still rocked in bracket AND I had to pay my Saab mechanic a bonus to find one of the keys lost under it.

Had an Oil Change, only to bring car home and have litres of oil leak all over garage floor. They insisted I bring it back, again at my own expense, despite the Warranty supposedly covering Towing. Worse, they claimed it was a faulty Oil Filter, brought car home and parked it outside only to have it leak oil all over newly paved driveway. Had to tow it back (thank god for CAA), only to have them tell me that I need to file an Insurance Claim "for extensive undercarriage damage" that was the cause of the leak to pay for the thousands of dollars it would cost to repair. Then took car to my Saab shop, they diagnosed the cause as a corrupted Oil Plug, suggesting it was the exact same one used in Corolla's that are renown for failing, changed whole pan and fixed the problem. Needless to say I'm extremally disillusioned and disappointed as I found the Dealer and Hyundai Canada both negligent and culpable. I'm about to take them to task now again for the Transmission issue; wish me luck!

All the best and good luck. Keep us posted

 

[RenGentMan]

All the best and good luck. Keep us posted

After putting a call into Genesis Canada Customer Service regarding lack of responsiveness, I finally got the local Dealer to call me back to book an appointment on November 2nd, earliest service appt available for the 60,000KM Spark Plug adjustment was December 2nd due to high demand during Winter Tire season. When told I want to have the transmission issue checked out re. the issued TSB, they immediately went into bobbing and weaving avoidance tactic, suggesting that the car just needs to get used to "my driving style", and citing if it were an identified problem, it would be a 2 week fix. Warranty expires January 9th, 2023, I suspect they're waiting it to out Bought some winter wheels from a local G80 Ultimate owner, he shared with me that he didn't like their attitude from his initial interaction on day 1, instead drives 90min away to get his Serviced. Hardly confidence inspiring.

 

[RenGentMan]

Not sure if this was addressed in another post and if yes, accept my apologies.

The mystery about transmission hard shift is finally revealed.

Hyundai issued a TSB for HARSH 2~3, 3~4 OR 4~5 UPSHIFT back in November 2021.

The culprits are two solenoids which Hyundai upgraded and they need to be installed instead of the old ones.

The bulletin describes the procedure to replace the 35R and 4&OD solenoids for as shift flare and/or harsh shift during the 2~3, 3~4 or 4~5 upshift.

Attached is the TSB copy which illustrates the part numbers.


Good luck.

Husam.

Husam,

My Dealer is claiming that G80's are not covered under this TSB.

 

[skipgen]

Husam,

My Dealer is claiming that G80's are not covered under this TSB.

Figures. $20K service for a $53K automobile... Lexus would probably replace it.

 

[Husam]

Husam,

My Dealer is claiming that G80's are not covered under this TSB.

The g80 is covered. Here it is:

Good Luck bro.

 

[rcmeditz]

The g80 is covered. Here it is:

Good Luck bro.

I find it really interesting that my dealer didn't even look into following this TSB and just opted for a full replacement instead. I wonder if the damage done to the transmission was just that bad. Just entering the 3.5 months of waiting for the backorder on the transmission with radio silence from the dealer on it.

 

[RenGentMan]

The g80 is covered. Here it is:

Good Luck bro.

I did share this with them, they are claiming mine, a 3.3L Sport, isn't covered....

 

[Husam]

I did share this with them, they are claiming mine, a 3.3L Sport, isn't covered....

Even if the 3.3L is not explicitly mentioned in the TSB, check with the dealer if the solenoids part numbers (46313-4E701 and 46313-4E601) are the ones currently installed in your transmission'a valve body. And if it is the case, then you'll have to order the new ones (46313-4E702 and 46313-4E602) because the new ones have breathers in them.

 

[rcmeditz]

They happened to call today to tell me that the warranty department approved the repairs however, transmissions are currently on back order and they could not provide an estimate as to when they'll be in stock. Additionally, they will not provide a rental/loaner car as I bought used and not new. So I just get to continue to play the waiting game.

I was told yesterday that all parts had been received and installed. The original due bill I had on the car from the time of purchase which was a chip in the front windshield will be installed on Monday, so after that day, and in the coming weeks, I'll provide updates on how the transmission is feeling. Thank you all contributors for helping to find the solutions to these problems.

 

[deepevil]

I agree it is more of a hit or miss. There could be multiple reasons of a transmission hard shift, to name a few: fluid level or age, valve body, solenoids, pump, torque converter, seals, dampeners etc.

However, Hyundai and Genesis released this TSB as it seems that the vast majority of the victims have been suffering from the hard shifts had their problems fixed with this approach of replacing the solenoids and updating the TCM software. I've done additional research and landed on a Russian forum (where I translated their posts) and the guys were pretty successful in decoding the reason why these solenoids fail. It is heat and temperature. These two solenoids do not have a breather and the new ones do.

I hope you all benefit from this TSB. I will attempt this fix sometime next month.

Good luck.

Husam.

Hello, probably you read my topic on drive2 community, its mostly in russian. I've wrote about temperature problem with our transmission, its true, because transmission works in temperature between 95-110 C, 110 its a limit for transmission for normal work and Transmission Oil Specs (!), as i know at 120 C it will show the error on TCU about Temperature.

But i've study this problem a long time, the replacement of solenoids/
Oil change doesnt help some times (mostly).

There are 3 places of transsmision dependency:

1. Brake booster - on wet climate its a problem, the central membrane can rust and let air through, because air passes through various throttle sensors, the Engine Control Unit can receive incorrect data, because of flowing air into the brake booster (which at the moment should be stopped) - as the result, transmission got shocks. Here is the post with photos ( Hyundai TSB 21-50-003 Issued 23 July 2021 concerning 8 Speed automatics 2012-2015 Gens/Equus/Coupes )

2. The solenoids - ofc, the working regime is hot, most of the drivers don't know that the stress isnt ok for our transmission (generally speaking).

3. Transfer Case - as i wrote upsite, i dig a lot of information about this transmission, got some Korean serviceman, who tells me, that they in Korea have the same problem. And they solve this with disconecting HTRAC (only RWD remains), drive some time to check if the transmission works well. After this, they pump out old oil from transfer case (yea, all documentation official says that the: "DO NOT CHANGE THE OIL in transfer case"), then fill with the new oil the same volume which was pumped out (!), on the lift let the car to work in (D)Drive, for a few minutes. Repeat the procedure with the oil change on transfer case. Reset of ECU (im not sure how to do this). After this, they got the perfect transmission.
You will ask, what role does the transfer case play - on the TCase, there is a Control Unit, and one sensor which check the rotation. Probably the Transmission Control Unit also check this side, and makes a decision. Who knows. Its just a community solution, not an official Hyundai Mobis/or any official orga.

For those who on the warranty - no chances to get help from the Official Dealership, because all of those problems isn't revealed by them. We tried in some Russian dealers, i've tried in Moldova, one guy from Germany with the same problem, but on warranty got refused. So it just on customer's hands.

p.s. sorry for my bad english im from Moldova.

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[rcmeditz]

Hey everyone,

A complete transmission replacement has made the car much more enjoyable. Drove to Los Angeles flawlessly on the car's end, other drivers... not so much but that's a different story. The only problem I'm experiencing is this tow hook license plate bracket I bought causing the collision assist censors to constantly ping at low speeds. Any recommendations for brackets that aren't drilling into the bumper or no plate at all? I'd run no plate but these $200 CA tickets are pushing me away from wanting to do that, since knowing my luck, I'd get hit with one.

 

[alengineer]

As for me, I changed the air filter, it was dirty and I noticed a noticeable improvement in the transmission, so far there is no harsh change. I hope it stays that way.
As for the vibration at 30-35 miles, I resurfaced the brake rotors, because there was vibration when I applied the brakes. And the problem was solved.

Sorry, my English is not good, I just wanted to share my experience with you

Update:
I just replaced that two solenoids , everything is fine now

 

[RenGentMan]

Not sure if this was addressed in another post and if yes, accept my apologies.

The mystery about transmission hard shift is finally revealed.

Hyundai issued a TSB for HARSH 2~3, 3~4 OR 4~5 UPSHIFT back in November 2021.

The culprits are two solenoids which Hyundai upgraded and they need to be installed instead of the old ones.

The bulletin describes the procedure to replace the 35R and 4&OD solenoids for as shift flare and/or harsh shift during the 2~3, 3~4 or 4~5 upshift.

Attached is the TSB copy which illustrates the part numbers.


Good luck.

Husam.

This is great insight and perspective Husam, thanks for sharing. I have tried to get my Dealership to acknowledge and address this issue several times, and they have avoided it like the plague. They did however claim to have "Flashed" an update back in late December, and that has dramatically reduced the hard shifts overall but especially between 1st and 2nd, and has also resulted in very aggressive downshifting, which I have no problem with whatsoever so far. It has made the car far more responsive coming out of corners and almost allows for single pedal driving in Stop and Go traffic.

 

[Husam]

This is great insight and perspective Husam, thanks for sharing. I have tried to get my Dealership to acknowledge and address this issue several times, and they have avoided it like the plague. They did however claim to have "Flashed" an update back in late December, and that has dramatically reduced the hard shifts overall but especially between 1st and 2nd, and has also resulted in very aggressive downshifting, which I have no problem with whatsoever so far. It has made the car far more responsive coming out of corners and almost allows for single pedal driving in Stop and Go traffic

This is great insight and perspective Husam, thanks for sharing. I have tried to get my Dealership to acknowledge and address this issue several times, and they have avoided it like the plague. They did however claim to have "Flashed" an update back in late December, and that has dramatically reduced the hard shifts overall but especially between 1st and 2nd, and has also resulted in very aggressive downshifting, which I have no problem with whatsoever so far. It has made the car far more responsive coming out of corners and almost allows for single pedal driving in Stop and Go traffic.

You're welcome. What's the TCM version that was flashed on the TCM?

 

[Husam]

Update:
I just replaced that two solenoids , everything is fine now

Did you have the same symptoms of 2-3 and/or 4-5 hard shifts?

What version of TCM software are you running?

 

[billybombill]

Took the car in to try for the TSB (2016 3.8, 84k) since it was shifting rough. Dealer found an error code for the fuel pump and replaced under extended warranty, said they'd look into TSB if this wasn't the cause. Acceleration is smooth and less sluggish now, car starts up quicker now too, so it was definitely contributing to my issues. Though the lower gears are still jerky and rough compared to the seamless higher gear changes. It seems to get a little better when the car warms up.

They apparently peeked at the transmission fluid and said it looked fine with no particles, but I'd like to drop the pan and check fully. Will try again soon for the tsb + tcm update.

 

[Husam]

Took the car in to try for the TSB (2016 3.8, 84k) since it was shifting rough. Dealer found an error code for the fuel pump and replaced under extended warranty, said they'd look into TSB if this wasn't the cause. Acceleration is smooth and less sluggish now, car starts up quicker now too, so it was definitely contributing to my issues. Though the lower gears are still jerky and rough compared to the seamless higher gear changes. It seems to get a little better when the car warms up.

They apparently peeked at the transmission fluid and said it looked fine with no particles, but I'd like to drop the pan and check fully. Will try again soon for the tsb + tcm update.

Nice update. Good luck. I would still look into the solenoids as they won't produce error codes if the hard shift is due to non electrical solenoid malfunction

 

[JimmyJam]

As the previous owner of a 2015 3.8 with the Hyundai Extended Warranty, I still experienced claim/honouring issues. Bought the car and Warranty extension out of Province, local Dealer repeatedly declined to acknowledge or respect it.

Had issues with intermittent flickering headlights, Seat Heater among others, and Dealer always initially declined to acknowledge or address issue, I assume hoping I would go away. When I pointed out the TSB issue for the lights, the Dealers response was 'Bring it in when the issue happens", which was a patently absurd as it of course only happened at night when the Dealership was closed. When I submitted the TSB, they claimed it was NOT covered under the Hyundai Ext Warranty. Took the matter up with several members of Hyundai Canada's Senior Management, and after several weeks they conceded with the astonishing caveat that they would only honour it this one time! With the Seat Heater issue, Dealer diagnosed it as a failed heater element and that the resolution was to replace the whole seat at my own $3000cdn cost. After again taking it up with Hyundai Canada, it suddenly WAS covered and Dealer claimed to have just replaced the seat cushion, which I found hard to believe as the seat still rocked in bracket AND I had to pay my Saab mechanic a bonus to find one of the keys lost under it.

Had an Oil Change, only to bring car home and have litres of oil leak all over garage floor. They insisted I bring it back, again at my own expense, despite the Warranty supposedly covering Towing. Worse, they claimed it was a faulty Oil Filter, brought car home and parked it outside only to have it leak oil all over newly paved driveway. Had to tow it back (thank god for CAA), only to have them tell me that I need to file an Insurance Claim "for extensive undercarriage damage" that was the cause of the leak to pay for the thousands of dollars it would cost to repair. Then took car to my Saab shop, they diagnosed the cause as a corrupted Oil Plug, suggesting it was the exact same one used in Corolla's that are renown for failing, changed whole pan and fixed the problem. Needless to say I'm extremally disillusioned and disappointed as I found the Dealer and Hyundai Canada both negligent and culpable. I'm about to take them to task now again for the Transmission issue; wish me luck!

Hello @RenGentMan. Seems we have/had the same 2015 Genesis 3.8. Mine has a few "issues" to resolve yet. I look forward to reading more of your posts and connecting.

 

[alengineer]

Did you have the same symptoms of 2-3 and/or 4-5 hard shifts?

What version of TCM software are you running?

Hi Husam

Yes ,now it shifting smooth

but there is a strong hesitation especially when accelerating , I'm sure it's ignition coils

Do you still have that problem?


3.8 DH AWD 2015

 

[Husam]

Hi Husam

Yes ,now it shifting smooth

but there is a strong hesitation especially when accelerating , I'm sure it's ignition coils

Do you still have that problem?


3.8 DH AWD 2015

Hesitation can be due multiple reasons, voiod be a fuel line / filter / pump or spark plugs or coils.

You may have some debris in the valve body.

You may send me a WhatsApp message if you require. Where are you located? I'm in Dubai.