All you can do is fluid change. One for the control fluid and one for the cooling fluid. No filter change. Control fluid change requires Hyundai techscan to complete.

 

how many miles were on the car when the transmission problem started?

 

52,000 almost on the nutz. Of course it occurred out of nowhere and hour away from home. But after kid's LaCrosse game it ran fine. But reoccured many more times.

At 20k miles the electronic coolant manifold failed which would cause the engine temp. to swing violently into overheat warning.

After the car sat at dealer for over a week, they called and said no codes, can't duplicate and good to go. I took the tech. for a ride and drove the tires off of it to get the engine went into overheat. They didn't believe me until I showed them. I wasn't mad with them at that time because when the error occurred first, the air temp. was a freak hot week during the Fall, but when I dropped of the car, it was in the low 50s. Still, engine needed to be in heavy/sustained boost to show the failure.

My point is dealer us causing issues for Huundai and Hyundai isn't the best quality car maker nor trainer for their dealer techs.

Just too much bs answers that cause me to scratch my head and this transmission deal really pissed me off.

 

I was under the impression that most of the transmission failures occurred with a lot fewer miles ... is your case an outlier or is this fairly typical?

 

The failure (if it's the high pressure oil pump) is a soldered connection on the pump circuit board, so there are a number of things that could factor in. Some just aren't going to break as soon, some may not be exposed to as extreme hot and cold cycles as other, types of roads driven on could be a factor (vibration), etc. It does seem as though most have failed really early, though. There have also been some other types of failures of the DCT. Mine went right around 9,000 miles, FWIW. The replacement now has 7,000 miles and has exhibited some concerning behaviors off and on, so just waiting...

 

I think the pump can technically be replaced on its own, but I doubt the dealer techs have the tools and training to do it, and that's why Hyundai has just been replacing the entire transmission. This is the first time I've heard of a dealer service department possibly trying.

 

Is your limited AWD? There was an unofficial poll floating around on this forum and it seemed all the SFs that had the DCT issues were AWD. Just curious if that’s really the case.

 

If you're asking me, mine is AWD. The Sonata N-Line and Elantra N use the FWD version, But I have not researched to see if they have also had pump failures. The percentage of Santa Fes that are FWD is probably pretty low, so I think those other models may be a better place to look, but maybe I underestimate the number of FWD SFs sold.

 

That’s good info about the models with FWD. Most of the issues I see are on AWD models. But as you as you say, that may be because most SFs with the DCT are AWD. Our SF happens to be FWD.