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It appears as if the transmission gremlin that I experienced during the first week is still there. It again happened twice over the last week that it got stuck into fourth gear after stopping at an intersection. The last time it happened I also felt the bang that I felt that very first time but not as severe since I was doing only about 30 kpu in the process of slowing down to the intersection. How I then noticed something was wrong is that car slips it's torque converter to get away from the intersection. When putting it in manual mode it shows 4 on the display and I can change up or down and although the display will increment or decrement the transmission would not change gears. Putting it into Park after stopping does not help either. The only way I could get it to function normally again was to shut the engine down and restart. I am aware of one other forumite that experienced the same thing. Since the car still goes and would easy cruise at 80kmu in fourth I wonder how many times this would go unnoticed by less observant drivers. I am getting a feeling that this is some kind of limping home mode. This is on top of my list when the car goes in for its first service.
 

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QUOTE (RamKat @ Jul 23 2010, 06:30 AM) index.php?act=findpost&pid=344087
It appears as if the transmission gremlin that I experienced during the first week is still there. It again happened twice over the last week that it got stuck into fourth gear after stopping at an intersection. The last time it happened I also felt the bang that I felt that very first time but not as severe since I was doing only about 30 kpu in the process of slowing down to the intersection. How I then noticed something was wrong is that car slips it's torque converter to get away from the intersection. When putting it in manual mode it shows 4 on the display and I can change up or down and although the display will increment or decrement the transmission would not change gears. Putting it into Park after stopping does not help either. The only way I could get it to function normally again was to shut the engine down and restart. I am aware of one other forumite that experienced the same thing. Since the car still goes and would easy cruise at 80kmu in fourth I wonder how many times this would go unnoticed by less observant drivers. I am getting a feeling that this is some kind of limping home mode. This is on top of my list when the car goes in for its first service.
Scary! Please keep us updated with this situation!
 

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It's a feature, silly... obviously to improve gas mileage.
 
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QUOTE (RamKat @ Jul 23 2010, 06:30 AM) index.php?act=findpost&pid=344087
It appears as if the transmission gremlin that I experienced during the first week is still there. It again happened twice over the last week that it got stuck into fourth gear after stopping at an intersection. The last time it happened I also felt the bang that I felt that very first time but not as severe since I was doing only about 30 kpu in the process of slowing down to the intersection. How I then noticed something was wrong is that car slips it's torque converter to get away from the intersection. When putting it in manual mode it shows 4 on the display and I can change up or down and although the display will increment or decrement the transmission would not change gears. Putting it into Park after stopping does not help either. The only way I could get it to function normally again was to shut the engine down and restart. I am aware of one other forumite that experienced the same thing. Since the car still goes and would easy cruise at 80kmu in fourth I wonder how many times this would go unnoticed by less observant drivers. I am getting a feeling that this is some kind of limping home mode. This is on top of my list when the car goes in for its first service.

Why are you waiting until your first service to address this?

If you think theres a problem I would take it in now dude...
 

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take it in asap! this could be global problem for the sonata! there was some other dude who got a new tranny!

if this is global then hyundy is screwed! at least for the cost of a new tranny!

QUOTE (RamKat @ Jul 23 2010, 06:30 AM) index.php?act=findpost&pid=344087
It appears as if the transmission gremlin that I experienced during the first week is still there. It again happened twice over the last week that it got stuck into fourth gear after stopping at an intersection. The last time it happened I also felt the bang that I felt that very first time but not as severe since I was doing only about 30 kpu in the process of slowing down to the intersection. How I then noticed something was wrong is that car slips it's torque converter to get away from the intersection. When putting it in manual mode it shows 4 on the display and I can change up or down and although the display will increment or decrement the transmission would not change gears. Putting it into Park after stopping does not help either. The only way I could get it to function normally again was to shut the engine down and restart. I am aware of one other forumite that experienced the same thing. Since the car still goes and would easy cruise at 80kmu in fourth I wonder how many times this would go unnoticed by less observant drivers. I am getting a feeling that this is some kind of limping home mode. This is on top of my list when the car goes in for its first service.
 

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RamKat:

It happened to me once on 2nd day of ownership in March. The transmission stuck in 4th gear after a loud explosion; of course engine rpm rev way up. I could not change higher than 4th gear manually. Fortunately after the couple of restart and shift through the gears, the problem has not recurred nor had it threw any Check Engine Light.

Dealer says if problem recurs, bring in for warranty service. I now have 9000 miles on it since late March. It sure made me feel bad when it happened,r regret the purchase immediately then. OK now, but still uncomfortable that it happened.

I did do research. There is TSB covering the problem below later issued in May:
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Subject: AUTOMATIC TRANSMISSION SOLENOID DTC P0741, P0743, P0748, P0753, P0758,
Group: AUTOMATIC TRANSMISSION
TSB#: 10-AT-003-1
Date: MAY, 2010
Affected Model: 2010~ TUCSON, 2010~ SANTA FE, 2011~ SONATA, 2011~ AZERA

DESCRIPTION:
Incorrect operation of the transmission solenoids may result in the following symptoms:
• Check Engine Light illuminated
• Transaxle held in 4th gear Fail-Safe
• Diagnostic Trouble Codes P0741, P0743, P0748, P0753, P0758, P0763, P0768, P0773 or P2709

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Summary: Shift actuator inside transmission is bad, requires major transmission work. I know it doesn't make you feel better. At least there is a fix. Good luck!
 

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this is not good, as it will happen to all of us eventually.



QUOTE (hancydan @ Jul 23 2010, 12:40 PM) index.php?act=findpost&pid=344189
RamKat:

It happened to me once on 2nd day of ownership in March. The transmission stuck in 4th gear after a loud explosion; of course engine rpm rev way up. I could not change higher than 4th gear manually. Fortunately after the couple of restart and shift through the gears, the problem has not recurred nor had it threw any Check Engine Light.

Dealer says if problem recurs, bring in for warranty service. I now have 9000 miles on it since late March. It sure made me feel bad when it happened,r regret the purchase immediately then. OK now, but still uncomfortable that it happened.

I did do research. There is TSB covering the problem below later issued in May:
-----------------------------------------------------------------------------------------------------------------

Subject: AUTOMATIC TRANSMISSION SOLENOID DTC P0741, P0743, P0748, P0753, P0758,
Group: AUTOMATIC TRANSMISSION
TSB#: 10-AT-003-1
Date: MAY, 2010
Affected Model: 2010~ TUCSON, 2010~ SANTA FE, 2011~ SONATA, 2011~ AZERA

DESCRIPTION:
Incorrect operation of the transmission solenoids may result in the following symptoms:
• Check Engine Light illuminated
• Transaxle held in 4th gear Fail-Safe
• Diagnostic Trouble Codes P0741, P0743, P0748, P0753, P0758, P0763, P0768, P0773 or P2709

--------------------------------------------------------------------------------------------------------------------
Summary: Shift actuator inside transmission is bad, requires major transmission work. I know it doesn't make you feel better. At least there is a fix. Good luck!
 

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Discussion Starter #8
QUOTE (hancydan @ Jul 23 2010, 01:40 PM) index.php?act=findpost&pid=344189
RamKat:

It happened to me once on 2nd day of ownership in March. The transmission stuck in 4th gear after a loud explosion; of course engine rpm rev way up. I could not change higher than 4th gear manually. Fortunately after the couple of restart and shift through the gears, the problem has not recurred nor had it threw any Check Engine Light.

Dealer says if problem recurs, bring in for warranty service. I now have 9000 miles on it since late March. It sure made me feel bad when it happened,r regret the purchase immediately then. OK now, but still uncomfortable that it happened.

I did do research. There is TSB covering the problem below later issued in May:
-----------------------------------------------------------------------------------------------------------------

Subject: AUTOMATIC TRANSMISSION SOLENOID DTC P0741, P0743, P0748, P0753, P0758,
Group: AUTOMATIC TRANSMISSION
TSB#: 10-AT-003-1
Date: MAY, 2010
Affected Model: 2010~ TUCSON, 2010~ SANTA FE, 2011~ SONATA, 2011~ AZERA

DESCRIPTION:
Incorrect operation of the transmission solenoids may result in the following symptoms:
• Check Engine Light illuminated
• Transaxle held in 4th gear Fail-Safe
• Diagnostic Trouble Codes P0741, P0743, P0748, P0753, P0758, P0763, P0768, P0773 or P2709

--------------------------------------------------------------------------------------------------------------------
Summary: Shift actuator inside transmission is bad, requires major transmission work. I know it doesn't make you feel better. At least there is a fix. Good luck!

Thanks for the info - I remember you posting it earlier but I could not find it. Not in a single one of the three cases did I have an engine light either. On all three occasions it came out of this mode the first time I re started it
 

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I got a bang out of my transmission on Saturday. little different symptoms than your though. i started the car, backed out of my parking spot, then put the car into drive. as soon as the trans went from reverse to drive, i felt/heard a bang that shuttered the car. i thought i hit a parked car behind me. after which about 4 of the warning lights on the dash lit up.

so i put it in park and turned the car off. restarted it to find the tpms light blinking... which later went out on its own after i got gas stopped/ started the motor again.

very odd. has been fine since this one incident.
 

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QUOTE (gregd71 @ Jul 25 2010, 11:30 PM) index.php?act=findpost&pid=344757
I got a bang out of my transmission on Saturday. little different symptoms than your though. i started the car, backed out of my parking spot, then put the car into drive. as soon as the trans went from reverse to drive, i felt/heard a bang that shuttered the car. i thought i hit a parked car behind me. after which about 4 of the warning lights on the dash lit up.

so i put it in park and turned the car off. restarted it to find the tpms light blinking... which later went out on its own after i got gas stopped/ started the motor again.

very odd. has been fine since this one incident.
This 6-Speed is a fairy new transmission, but has been in cars in Korea a year before introduced to USA. I was in Korea for 2 weeks last month (June), and I saw tons of Y20s (Sonata's) all over the road. I want them to be relaible.

I hope these are freak happenings and not signs of troubles to come. I am keeping my figures crossed.

[ Weird Observations: In Korea, More than 95% (unscientific statistics) of all cars are in Black (mostly), Silver, or White. I'd say less than 5% of all cars are of other colors, weird! ]
 

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..
>>>[ Weird Observations: In Korea, More than 95% (unscientific statistics) of all cars are in Black (mostly), >>>>>

I am not sure but I was told once that a black car in Japan was regarded as a wealthy persons car, just as a black limo might be in the states .At that time the motor co I worked for only exported black cars to Japan and mostly Oriental drivers drove black cars at that dealership. Now is this true or carry over to Korea, I Do Not Know ?
 

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Mine has been at the dealer for over a week. It had banged and locked in 4th gear(automatic) three times in 1200 miles, last time it did it there was a code confirming it. Now I'm waiting for a new transmission! There have been other issues other than this topic. Dealer seems to be trying hope they don't have to rebuild the whole car. Guess you might say I'm not real satisfied with this purchase. So if your tranny pops or bangs and locks in 4th gear get to your dealer and have checked out.
 

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QUOTE (blueinasonata @ Aug 4 2010, 11:54 AM) index.php?act=findpost&pid=347082
Mine has been at the dealer for over a week. It had banged and locked in 4th gear(automatic) three times in 1200 miles, last time it did it there was a code confirming it. Now I'm waiting for a new transmission! There have been other issues other than this topic. Dealer seems to be trying hope they don't have to rebuild the whole car. Guess you might say I'm not real satisfied with this purchase. So if your tranny pops or bangs and locks in 4th gear get to your dealer and have checked out.
So they are replacing the tranny - not only the solenoid?. I hope they replace everything related - including the control electronics. I wonder if there is some reference to real cases like yours. When I mentioned it to my dealer he said it is the first time he heard about it.
 

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QUOTE (RamKat @ Aug 4 2010, 05:58 PM) index.php?act=findpost&pid=347191
So they are replacing the tranny - not only the solenoid?. I hope they replace everything related - including the control electronics. I wonder if there is some reference to real cases like yours. When I mentioned it to my dealer he said it is the first time he heard about it.
They called today and said it will be ready tomorrow (Thursday) I'll ask what they replaced and get a service ticket. Wish me luck!
PS they said they had one other they had done just a few days earlier than mine don't sound good to me.
 

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Hi everyone,

Never posted on a forum before but I thought this was worth it. I have a 2011 Sonata SE and am having the same problems reported here. I have 4,000 miles on my car and have had the "stuck in fourth gear problem" 3 times. Each time it happened I was driving between 65 and 80 mph, I felt a large jerk (like I hit a pothole) and the car dropped to 4th gear and was stuck there. At that speed the jerk was so sudden that if the seat belt failed to hold me back, my head could have hit the windshield (scary!). Same issue as everyone else in terms of fixing it; I had to pull over on the highway and restart the car.

Brought the car to the dealer after the first time and they said I must have hit the paddle shifter on the steering wheel by mistake (which there is no way I did). I asked them to explain the stuck gear and they said it was a fluke. I asked them to note the issue and I walked out in hopes that it was in fact a fluke.

2,000 miles later, it happened again two days in a row. I called to set up an appt and had this forum and the posted TSB with me. I spoke to the service manager who said it is probably the electronic shifter and he will replace it. They basically ignored the TSB and forum, though they did say that the TSB only applied to cars that had a check engine light come on. In the week between my call to the manager and the appt, I was getting into my car and tapped the paddle shifter very lightly and heard a click. I thought nothing of it since I barely touched it. Then I started driving and the downshift paddle was not working. I called to tell them about this unrelated issue and they said they will look at it during my appt.

They have now worked on my car and said that they replaced the paddle shifter (and not the electronic shifter) and that should solve all of the related issues including the sudden downshift (this makes me wish I didn’t tell them about the broken paddle shifter). I reiterated the forum posting and the numerous similar issues; they said all they could do is drive my car until it happened again. I told them that I didn’t want some random person driving my car and putting unnecessary miles on it with the unlikely possibility that they will be able to replicate the downshift. Needless to say, I have a feeling I will be back to the service dept in a few thousand miles when it happens again.

This is the first Hyundai in the family (we’ve always stuck to Hondas and Toyotas) and I really wanted it to be a great car. I guess you can add me to the list of people with this issue, hopefully more people speak up and more info comes out by Hyundai so they can resolve the issue. Sorry for the long post, guess I’ll have to become more fluent in forum etiquette.
 

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QUOTE (SPat @ Aug 5 2010, 08:49 PM) index.php?act=findpost&pid=347444
I guess you can add me to the list of people with this issue, hopefully more people speak up and more info comes out by Hyundai so they can resolve the issue. Sorry for the long post, guess I’ll have to become more fluent in forum etiquette.
Thanks for your contribution SPat. Keep us posted.
 

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Been lurking on these forums for a bit, saw this thread and figured I'd register just to share my experience.

Happened to me twice so far.

Once on the highway at around 80 mph. Very loud bang, car jerked a bit. I looked back to see if I hit something and didn't see anything. I didn't realize something was wrong until I caught my exit and slowed down. Car was having problems accelerating from a stop. Switched to manual and noticed that the gear display would flicker between 1 and 4, leading me to believe the tranny was stuck in 4th gear.

Second time on the street I live on, luckily I was traveling at a slow speed. Heard the same bang, not as loud as before. Same symptoms. It was this time that I realized the issue would clear up after stopping my car and shutting it off then back on again.

Going to take it in for service soon.
 

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Darn, there have been quite a few cases already . It'd be nice to know the build date on all those cars, as well as mileage; there's probably a pattern. I can't imagine internals not being damaged with those 'bangs' at 80 mph. I thought this happened when taking off or something. Can't be good. And you're also talking major converter wear when taking off in 4th.

Now, have any of you had this issue fixed??? I wonder if it requires tranny removal (a major job) or just removing the solenoid cover in front of the tranny. Once fluid is drained, I'm sure it can be removed without tranny removal, but could be wrong.

Finally, my question is if the solenoids are eventually going to go bad in all cars with the same batch, or if didn't happen in 'x' miles we're home free. Of course the other question is what's that 'x' mileagae. Always something. Oh well. At least the issue supposedly resets itself with an ignition cycle in case it catches us on a trip or something. Have a good one gang.
 
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