NHTSA Complaint #10533302 — 2009 HYUNDAI SONATA

I HAD AN ISSUE WITH MY CAR JERKING RATHER HARD WITH THE AUTO-TRANNY DOWNSHIFTED FROM 2ND TO 1ST GEAR WHENEVER I SLOWED DOWN. THIS SOMEWHAT STOPPED WHEN THE CAR GOT WARMED UP, GUESSING MORE SPECIFICALLY WHEN THE TRANNY HEATED UP. I SEE I'M NOT THE ONLY ONE. I'M IN A WARMER CLIMATE SINCE AND HAVEN'T SEEN IT BUT WILL SEE HOW IT BEHAVES THIS WINTER IN AUSTIN, TX VERSUS LAS CRUCES, NM. I THINK IT MAY HAVE STOPPED ABOUT THE SAME TIME A) IT GOT A LITTLE WARMER OUT AND B) I SIMULTANEOUSLY STOPPED PUTTING IN IT NEUTRAL AT STOPLIGHTS (TRYING TO SAVE MY CLUTCH FROM WEAR AT THE TIME.) PERHAPS IT USED THIS "NEUTRAL" INFO IN ITS COMPUTATION FOR THE TRANNY COMPUTER AND THAT WAS THIS ISSUE. OR MAYBE IT WAS THE COLD AND I STILL WILL FIND I HAVE THE PROBLEM. OR BOTH. NOT SURE BUT WANTED TO PUT THIS OUT THERE SINCE I'M NOT THE ONLY ONE BUT AM PROBABLY THE ONLY WITH THE PROBLEM WHO WAS PUTTING THE CAR IN NEUTRAL AT LIGHTS. *TR