2019 Sorento SX L (FWD)
Hope they don't do mine. Ain't broke, don't fix it.
9200 feet elevation is definitely a factor with respect to power, and that's probably why the issue can't be reproduced at 5200 feet. Less oxygen means you have a richer fuel/air ratio.My 2019 Sorrento SX is doing the same stumbling, hesitating thing when trying to go at speeds around 20 to 30 mph. I have had it to the dealer twice. They have reset the programming (?). They drove it up into the mountains as I live at 9200 feet and I could not replicate at the dealer at 5200 feet elevation. At first I thought it was related to the cold temperatures and elevation I lived and drove at. They said they could not get it to happen.
I have had the car for about 6 months and have about 4200 miles on it. I will be taking it back in. But I think the difference is when there is snow and ice, I drive slower than in the city and it does it a lot. I have tried all the options and it seems to do it in all. It does not seem to do it once it is up to speed over 40 mph.
This bulletin provides the procedure to improve logic of the TCU (Transmission Control Unit) software on some 2019MY Sorento (UMa) 3.3L vehicles produced from January 24, 2018 to March 26, 2019,which may experience a malfunction indicator lamp (MIL) ON with DTC P0741. To correct this concern, apply the improved logic to the TCU using the KDS ECU Upgrade function as described in this bulletin.
Had this TSB (SA387) done to my 2019 SX V6 yesterday. Seems to have addressed my trans stumbling.KIA has a TSB out for a "logic improvement" of the 8AT. I don't know if it's at all related to the problem described here, but it is a software update for the transmission.