I’ve tried getting a straight answer from random boards online but I just can’t seem too. I have a 2016 Hyundai Elantra with 130k miles on it that has, as far as I know, never had its transmission fluid changed. Lately I’ve noticed a bit of a delay in switching gears while accelerating from low speeds and was thinking maybe I should get this done or do it myself. My question comes down to will I cause more issues potentially by changing the fluid then if I just left it alone. I want to specify I do mean just change no flush. Sorry if anything I’ve said doesn’t make sense I’m not the most mechanicly inclined
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That Reddit link is exactly what I needed thanks.
You won’t get a straight answer because nobody, especially online, can guarantee no problems after a drain/fill. A delay in shifting could be the car holding higher shift points until the fluid is near/at operating temp. Could also be the transmission adapting for older fluid, using delayed/harder shifts to protect itself. if you’re not experiencing slipping or shift flare, you have a very good chance of being fine. Worst case it was on its way out and the change made it worse, put the old fluid back in and start looking for a replacement
Ill give you a straight answer. The transmission in your vehicle is considered a sealed unit. Meaning the trans fluid is never meant to be changed. Your shifting issue is most likely a trans temperature sensor. Changing the fluid wont cause any damage, but its not gona fix any either.
Im kia/Hyundai tech.