One problem related to owners/service manual has been reported for the 2009 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Hyundai Sonata based on all problems reported for the 2009 Sonata.
When car is placed in drive the gear shift display will show random gears. It will cycle through all the gears until you select to use the manual shift (+/-) to ensure that you are in the proper gear. This has been an issue on others car in the Sonata line up just not this year. This problem needs to be addressed and corrected. I am taking my vehicle to the car dealer today to get this problem fixed.