why would 08 Hyundai SF with 103,00 already be venting transmission fluid?

Asked by Jun 16, 2016 at 05:09 PM about the 2008 Hyundai Santa Fe 2.7L GLS FWD

Question type: Maintenance & Repair

noticed trans fluid leaking on driveway a few months ago. had just returned
from a trip to NC driving--about 6 hours on the road each way. brought to a
transmission shop and they did some searching to see where fluid was leaking
from and after painting the inside of case and having me drive around and
being able to see where leak is coming from, they have determined that the
fluid is venting out the top--they need to take trans apart and see what's
damaged and how much, and then replace or fix what's damaged.  mech is
perplexed why a car with 103,000 would have this problem, as i take very
good care of car...   1800-2800 is his guestimate to fix and says it;s def. worth
fixing.   my question is , why does a car with so low mileage and not heavy
usage break down like this?

2 Answers


I think they are going in the wrong direction, blowing out of the vent is usually overheated fluid, did they check the temp of the fluid? it is possible that the internal trans cooler in the radiator is plugged, if that is the case then instead of replacing the radiator I would plug the ports on the radiator and add on an external trans cooler out in front of the radiator, just make sure you get one big enough, a 10,000 should be more than enough too cool the transmission.

2 of 2 people found this helpful.

Thank you for your response. I will call shop and respectfully ask about radiator.

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