One problem related to crankcase (pcv) has been reported for the 2009 Hyundai Santa Fe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Hyundai Santa Fe based on all problems reported for the 2009 Santa Fe.
This vehicle has been had a fluctuation idle for over a year. It has been to the dealer for service on this issue many times. No codes are every thrown. I brought the TSB about idle issues to the dealer's attentions. They said this was only for certain error codes. Hyundai USA was directly contacted about this issue. No repairs were made for this issue. The vehicle has the 3. 3l v6 engine. Se trim level. The engine stalled when decelerating from a highway speeds to a stop. It stalled before the car stopped. It restarted and drove after that. No check engine light. I stopped at the dealer that same day. I had them check the electrical system jsut to be sure that was not the issue. Battery, charing, etc all tested fine. I have the printout. So the vechicle did not show a check engine light the dealer offered no other assistance. It is clear from searching the internet that many many people have an issue with Hyundai vehicles around 2009 stalling. Most all of these people report the issue with no codes. So the dealer is limited in what they can do. They talked about ecm updates (firmware), and a fuel system sensor, and the crankcase senor. This is clearly a large issue putting people at risk. The NHTSA and ntsb should launch a full investigation, and find a real solution. Issue a TSB at a minimum, or a recall if needed.