Interesting that 3 separate people have mentioned that their Hyundai/Kia transmission was under filled from the factory. Not saying you guys are wrong, but I don’t buy it. These transmissions (and most current 6+ speed auto, DCT, and CVT trannys) are very sensitive to fluid temperature in relation to fluid level. Some of them have very elaborate shift relearning procedures after a simple drain and fill. There are thermostatic oil level control valves that open and close in a way similar to an engine coolant thermostat. Check the fluid level a few degrees too cold and the fluid may appear too full. Check the level a few degrees too warm and the level may appear low. I suspect you guys might be checking the level with the trans a bit too warm.
Hyundai / Kia 2.4L Theta ll success stories ?
- Thread starter Ammofirst
- Start date
- Status
Yea-it's not easy to sue in the U.K.
The factory vs. shade tree mechanics-I would suggest you are probably spot on. I have seen many on the Hyundai forums drain out 5 quarts and then say it's full at 4.5....so yea.
There is Hyundai Motor Europe which obviously the UK is under that jurisdiction.
https://www.hyundai.news/eu/article...ed-president-ceo-at-hyundai-motor-europe.html
the importer is a private company... Hyundai Europe won't do anything for individual customers
Last edited:
Normally I would agree with you, but my car shift flared 2-3 from the factory (assuming it wasnt changed before 28k, I bought it used). This is the reason why I wanted to change it. I don't disagree its a fluid temperature thing. The first 2 drain and fills I did, I did the change hot which was a mistake, but I also used a temp gun which isn't accurate. But both times I definitely put in more than what came out, ~5 qt.
It wasn't until I got my OBD2 scanner that I realized the trans temps stay well above the level check spec after they are warmed up, so there was no way I could possibly get an accurate reading doing it warm. Although you drain a decent amount from the pan, the rest is still hot. After 2 drain and fills that way, I used my obd2 scanner to do a "level check" by adding 3/4 quart from stone cold, slowly warming it up via idle and short drive around the block. When the temp hit 120ish, I did the cycling through gears and pull the level check. An initial burst showed it was toped up but in 1-2 seconds it steadied and I plugged it. Only about 5-10 ounces came out. I also did a trans re-learn at this point because Car Scanner for android supports this function.
Now I get no shift flare like before (~500 rpm) when the engine has sat for 2-3 days cold. When warm, the car shifts much more smoothly than from factory. The temp probably affects how much is in the pan, thereby the level. So yeah too hot = underfilled.
Not trying to start an argument, I know there are differences in how things work in different countries, but Hyundai and other manufacturers are in complete control of honoring manufacturer warranties. In countries that require goods to be imported through an importer, the manufacturer often will create a stand alone company to handle the importing. But make no mistake, the important company is there to serve the manufacturer.
https://www.hyundainews.com/en-us/releases/1124
You get 5 years, that's it. After that, go pound sand. If you had the car serviced outside the dealer network, you won't even get 5 years but possibly only 2. If you imported your own car or from parralel import, 2 years only.
Well I think it’s safe to say the 2.4L Theta ll engine is **** near indestructible.
Yep, to be fair it seems that the 2017+ Theta II engines are not suffering catastrophic failure like the 2011-2016 years. Anecdotal data but I’ve only heard of a few failures in 2017 models, and I haven’t read of any failures in 2018+ year models. The 2017’s are pushing 5 years old and the 2018’s pushing 4 years old, the 2018MY Sonata began production in May 2017.
Is this something that happens only in newer transmissions?
I have never had a transmission register a lower fluid level when warm then when cold. Any transmission I have ever checked has always had the "Hot" higher on the stick than the "Cold" to account for thermal expansion of the fluid.
Yes this is more common on newer transmissions, GM has been using them in FWD transmissions since the 90’s.
This is also part of the reason why transmissions don’t have dipsticks anymore.
Last edited:
- Status
Similar threads
