Poor Shift Quailty of Automatic Transmission on Hyundai XG350

Prior to replacing the automatic transmission fluid (to improve shift quality), make sure that the transmission fluid level is correct. Also, make sure the computer that controls the transmission has the most up-to-date adaptive programming information. When servicing these transmissions be sure to use fluid approved by Hyundai.

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Average mileage: 77,365 (34,000–129,578)
4 model years affected: 2002, 2003, 2004, 2005 more
12 people reported this problem
5 people shared problem details
auto shifting is delayed. trans fluid due for change
1 person likes thisFlag inappropiate
2003 Hyundai XG350129,578
After taking to repair shop the car returned with shifting problems. Now the car will rev into 3000-4000 before trying to shift. This is causing other problems and trouble codes.
2005 Hyundai XG35080,000
haven't fixed yet thought it was just due to being in excess of 80k (about when it started). Been dealing with it for over 85k miles now (over 165k on ODO)...
2002 Hyundai XG35075,000
Late shifting into third 3rd gear. Changed fluid at dealer. Seemed okay.
2005 Hyundai XG35069,615
transmission "kicks" into 2nd gear. coded as "relearned shift values" and they updated the computer system. $50 at the dealer.
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