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Hyundai Sonata Transmission Questions

155 messages,  Last post on Oct 13, 2009 at 12:20 PM

You are in the Hyundai Sonata Forum. Your Hosts are pat & karens

What is this discussion about? Hyundai Sonata, Transmission, Sedan


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#21 of 155
Re: 2008 Sonata transmission shift question! by sellcar
Jan 15, 2008 (5:12 pm)
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Replying to: craigbrooks (Dec 30, 2007 10:01 am)

I have a Hyundai Sonata 2008 2.4l 2,700 miles, Automatic. It has a slow shift between 1st & 2nd gear
Feels like a loss of power until it passes 2nd gear, fuel mileage is 19-21 city/hwy 60/40 hwy. Took it to the dealer and no codes in the computer. Any answers will be helpful! Thanks!
#22 of 155
Re: transmission shutter [superjesr] by colloquor
Jan 15, 2008 (5:48 pm)
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Replying to: superjesr (Jan 05, 2008 12:42 am)

Although this addresses old posts - let's please put the question on ATF for use in Hyundai's, Kia's, and Mitsubishi's to rest once and for all. These three corporations require SP-III ATF, not SP-III approved, or SP-III equivalent fluids. There is no direct substitute or equivalent SP-III on the market. Regardless what Valvoline, or any other companies claim, unless you use Hyundai, Kia, or Mitsubishi brand SP-III ATF in your automatic transmission, your warranty is null and void on any transmission failures. This is direct from Hyundai corporate. The Hyundai and Kia automatic transmissions are built under license from Mitsubishi, and again, if you use anything other than SP-III, you're out-of-luck on substantiating any warranty claims should an automatic transmission problem develop within the 100K/10 year powertrain warranty period.
 
Don't try to save a few dollars per quart on ATF, just buy the real stuff!
#23 of 155
2008 Sonata transmission shift question! by sellcar
Jan 15, 2008 (6:10 pm)
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No one has changed the transmission fluid in this car, it still has the factory fluid.
#24 of 155
Re: 2008 Sonata transmission shift question! [sellcar] by craigbrooks
Jan 16, 2008 (10:21 am)
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Replying to: sellcar (Jan 15, 2008 5:12 pm)

The lag betwen 1st and 2nd is normal. Another member changed his fluid with a Castrol ATF fluid, can't remember which one, and he said it made the car shift a lot smoother. Mine does this and has since I've owned it. I'm close to a trans fluid change so will see what happens then.
#25 of 155
Re: 2008 Sonata transmission shift question! [sellcar] by craigbrooks
Jan 16, 2008 (10:21 am)
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Replying to: sellcar (Jan 15, 2008 6:10 pm)

What's wrong with the factory fluid?
#26 of 155
Re: 2008 Sonata transmission shift question! [craigbrooks] by sellcar
Jan 16, 2008 (10:33 am)
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Replying to: craigbrooks (Jan 16, 2008 10:21 am)

Thanks for the info. I just wanted to know if any other people with a Hyundai Sonata 2008 2.4 L & Automatic Transmission have the same transmission shifting like mine.
#27 of 155
Re: 2008 Sonata transmission shift question! [sellcar] by craigbrooks
Jan 17, 2008 (7:24 pm)
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Replying to: sellcar (Jan 16, 2008 10:33 am)

just remember it's not just the 08's. NF owners have this annoyance. Most if not all I've talked to.
#28 of 155
Re: transmission shutter [colloquor] by robert1955
Mar 10, 2008 (5:44 pm)
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Replying to: colloquor (Jan 15, 2008 5:48 pm)

Directly from the owners manual.
Your Hyundai automatic transaxle is specially designed to operate with
HYUNDAI GENUINE ATF SP III, DIAMOND ATF SP III, SK ATF SP
III or other brands meeting the SP III specification approved by Hyundai Motor Co..

Now how you interpet that is up to you. I read it as they are saying a fluid that meets the SP III specification that Hyundai approves for use in their transmissions, not that Hyundai has to specifically approve an aftermarket manufacturer. But since I only have 19,000 miles on my car and have 31,000 miles (approx 11 months for me) to go before I begin to think about doing a flush and fill I have time to wait and see what happens.
    I do sell Amsoil and they make a ATF that they say meets the SP III specification along with the Castrol product I saw on a store shelf this weekend and like has been said on here and other forums some people have changed out to other fluids and we will see how it goes for them. I am not having a problem currently with my transmission and hope not to but when I do change out my trans fluid I will base my decision off of a cost basis, i.e. Hyundai labled ATF, cause they do not make it do they, or one of the other ATF's out there. I can't believe Castrol, Amsoil, or any other manufacture would be selling a product that they say meets the SP III and it did not. The lawsuits would sink them rather quick and if you did use the Amsoil ATF and it ended up destroying your transmission and it was the fluid that caused the problem they would either pay for the repair or replacement of the transmission. I would think Castrol would also be required to do the same since they say SP III right on the bottle.
#29 of 155
Re: 2008 Sonata transmission shift question! [sellcar] by hytech
Apr 04, 2008 (3:43 pm)
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Replying to: sellcar (Jan 15, 2008 5:12 pm)

try to have the dealer reset the adaptive values for the trans i have seen quite a few at the shop most of the time the porters like to drive rough when the vechicle is on the lot and the trans computer learns improperly, have the dealer reset the adaptive values and drive it for a few miles the way u normally do,shut the car down key out off ign. for about a minute and drive the vechicle again, shut down again,after a few min drive and you should see improved shifts if the dealer dont do it disconnect battery for about 10 min and then drive but the scanner way is the best way . good luck .fluid is most likely not an issue and hyundai fluid is strongly recommended since other types are mixed with multiple additives to work with various transmissions which may prematurely wear clutch pack material
#30 of 155
Re:08 Sonata transmission shutter [toshas] by roaurboat
Apr 05, 2008 (10:42 pm)
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Replying to: toshas (Jan 04, 2008 8:58 pm)

I bought my 4 cyl. Sonata Limited 8 days ago and noticed the shutter at around 25 MPH where car is already in 4th gear with RPMs at a little over 1! Causes a rumbling noise and vibration felt in steering wheel and whole car. Complained to dealer and they reported that they are aware of this problem and Hyundai working on software fix that tells transmission when to shift. They did not know when est. date of arrival is for fix. I am upset as they knew about this problem and never mentioned in new car sales discussion.
 
What have others heard?

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