2000 Hyundai Sonata Transmission Problems

Your transmission is stuck in third gear and won't shift properly, causing the check engine light to come on. When the car does shift, it bangs hard going in and out of gears before getting stuck again. Additionally, your airbag warning light stays on constantly. The transmission may need diagnostic testing to read error codes, and the airbag system will need inspection to determine why the warning light is illuminated.

TRANSMISSION INPUT SPEED SENSOR FAILURE, THIS PROBLEM IS SHOCKINGLY ALL OVER THE INTERNET, THE SENSOR FAILS AND IF YOUR ON THE HIGHWAY, YOU SUDDENLY SLAM DOWN IN SPEED TO ALMOST HALF YOUR PREVIOUS SPEED WITH A LOUD BANG AS THE TRANSAXLE JUMPS FROM 4TH GEAR TO 2ND GEAR AND THE ENGINE REDLINES. DUE TO THE FAILED SENSOR TELLING THE TRANSAXLE TO DOWNSHIFT IMPROPERLY. A INEXPERIENCED OR LESS CAPABLE DRIVER MAY HAVE BEEN THROWN OUT OF CONTROL FROM THE SHEER FORCE OF THE IMPACT WHEN THE TRANSAXLE MIS-SHIFTS FROM 4TH TO 2ND WHEN THE SENSOR MALFUNCTIONS. *TR

DT*: THE CONTACT STATED INTERMITTENTLY, THE VEHICLE WOULD NOT SHIFT OUT OF FIRST GEAR. THE VEHICLE HAD TO BE TURNED OFF AND THE CLUTCH PUMPED FOR THE VEHICLE TO SHIFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CLUTCH ASSEMBLY WAS REPLACED. THE PROBLEM PERSISTED AND THE REPAIR SHOP SUGGESTED THE TRANSMISSION BE INSPECTED BY THE DEALERSHIP. *AK

CAR HAD A RECALL FOR THE OXYGEN SENSORS AND WAS TAKEN CARE OF. HOWEVER, IT HAS BEEN IN THE SHOP 3 OTHER TIMES TO HAVE THE OXYGEN SENSORS REPLACED AND I JUST HAD ANOTHER GO OUT PAST THE WARRANTY PERIOD. I HAVE ALSO HAD THE CAR 'SLAM' INTO A LOWER GEAR WHILE ON THE EXPRESSWAY AND THE CHECK ENGINE LIGHT CAME ON. WHEN I TAKE IT THEY SAY IT IS A TRANSMISSION SENSOR AND REPLACE IT. THIS HAS DONE IT FIVE TIMES!! IT IS VERY SCARY WHEN IT DOES THIS. THE CAR IS ON IT'S FOURTH BATTERY AND IT HAS 80,000 ON THE ODOMETER. I HAVE HAD NUMEROUS OTHER PROBLEMS TOO. NOW IT JUST WILL NOT START, IT IS GOING TO AN INDEPENDENT SHOP THIS TIME. THIS CAR HAS BEEN ONE BIG HEADACHE!!! *NM

I FIRST HEARD A WHINEING COMING FROM THE REAR OF CAR, IT GRADUALLY GOT LOUDER. DEALER SAYS IT IS REAR WHEEL HUB BEARINGS. *AK

I HAD MY VEHICLE CHECKED FOR TRANSMISSION FLUID BEFOR SENDING IT TO DEALERSHIP POHANAKA HUNDAI SUBARU. THIS VEHICLE SAT FOR 3 DAYS BEFORE IT WAS LOOKED AT. I TOLD THEM IT WAS A TRANSMISSION PROBLEM. THEY SAID THERE WAS NO TRANSMISSION FLUID IN VEHICLE. NO FLUID ON GROUND. THEY SAID IT WAS A LINE THAT WAS BROKE OR HAD A HOLE IN IT. ABOUT A HOUR LATER I WAS TOLD IT WAS NOT THE LINE BUT THE RADIATOR.ASKED IF THERE WAS ANY FLUID ON UNDERCARRIAGE COULD NOT ANSWER. NOTHING HAS BEEN DONE YET TO VEHICLE. THIS IS THE PROBLEM I HAVE HAD WITH THEM. I WOULD LIKE TO KNOW HOW MANY TRANSMISSIONS HAVE GONE OUT ON THE 2000 HUNDAI SONATA. *AK

MY 2000 SONATA STALLS AND OR FLUTTERS INTERMITTENLY WHEN SHIFTING FROM FIRST TO SECOND AND SOMETIMES FROM 2ND TO THIRD. TRANSMISSION WAS REPLACED BUT STILL IS DOING THE SAME THING. IT HAS BEEN IN THE THE SERVICE DEPARTMENT MANY TIMES BUT I AM TOLD "NOTHING IS WRONG WITH IT" THERE WAS A LOUD CLANK WHEN SHIFTING GEARS EVEN WHEN PARKED. ONE OF THE MAIN REP FROM HYUNDAI CAME AND CHECKED IT OUT AND SAID IT WAS FINE. HE ALSO DROVE THE CAR, BUT THE WAY HE DROVE IT WAS LIKE AT BEING AT AN INDY 500. I ASKED HIM TO COMPARE MY CAR WITH ANY OTHER CAR ON THE LOT TO SEE IF THE NOISE WAS NORMAL, HE REFUSED. I TOOK THE CAR TO ANOTHER HYUNDAI DEALER AND WAS TOLD THE CAR WAS UNSAFE TO DRIVE BECAUSE 3 BOLTS HAD BACKED OUT OF THE HOUSING THUS CAUSING THE CLANKING NOISE. IT STILL FLUTTERS. I HAVE BEEN DEALING WITH THIS PROBLEM SINCE 11-2001. I BOUGHT THE CAR IN 3-2000. NEW. THE SENSOR ALSO HAD TO BE REPLACED TWICE.*AK

CONSUMER STATES THAT WHILE DRIVING VEHICLE WILL NOT SHIFT CORRECTLY. CAUSED BY TRANSMISSION FAILURE. HAD IT REPLACED 3 TIMES. MR

THERE WAS AN ERRATIC OPERATION WHEN THE ACCELERATOR PEDAL IS APPLIED. THE DEALER COULD NOT DUPLICATE THE PROBLEM. THE HORN MALFUNCTIONED, THE DOOR(S) CLOSED BY THEMSELVES, AND WHEN THE VEHICLE WAS DRIVEN PASS THE 40 MPH MARK, THE TRANSMISSION OPERATED AS IF WERE CATCHING UP. SCC

WHILE DRIVING AND UPON ACCELERATION, VEHICLE REMAINS IN DRIVE, BUT DOES NOT ACCELERATE PROPERLY. VEHICLE SHIFTS INTO NETURAL, AT TIMES BECOMING STUCK IN BETWEEN GEARS. CAUSE UNKNOWN. *AK. CONSUMER STATED WHEN VEHICLE IS MOVING TO SHIFT FROM LOW TO HIGH IT SITS IN BETWEEN GEARS AND MAKES A LOUD NOISE, THE VEHICLE HAS BEEN IN THE SHOP ON SEVERAL OCCASIONS AND THE TRANSMISSION HAS BEEN REPLACED TWICE, DEALER STATED THERE IS NO PROBLEM.*JB

THE AIRBAG LIGHT COMES ON. THE DISTRICT MANGER, JEFF WESTLAND OUT OF N.J., (609) 395-7308 STATED THAT HYUNDAI IS AWARE OF A DEFECT IN THE RIGHT PASSENGER SEAT (LATE 1999'S & EARLY 2000'S THAT ROLLED OFF THE ASSEMBLY) WHICH MAKES THE LIGHT COME ON IF A PERSON MOVES AROUND IN THE SEAT, EXCESSIVE WEIGHT OF A PASSENGER, OR PUTTING ANY OBJECT UNDER THE SEAT. WHAT I FIND OUTRAGEOUS ABOUT THIS, IS THE LAST TWO TIMES I'VE TAKEN MY VEHICLE IN, I'VE BEEN TOLD THAT THE AIRBAG LIGHT WAS NOT ON. WHEN I SPOKE WITH MR. WESTLAND, HE WANTED ME TO LEAVE THE CAR FOR SEVERAL DAYS AT THE DEALSHIP, FIRST TEAM, SO THEY COULD GO OVER IT BUMPER TO BUMPER. ON JANUARY 8, 2001 I TOOK THE CAR INTO THE DEALER SO THEY COULD LOOK AT THE TRANSMISSION AND THE AIRBAG LIGHT WHICH WAS ON AGAIN. ON THAT EVENING, AT APPROXIMATELY 5:00, I RECEIVED A CALL FROM THE DEALSHIP, ASKING IF I COULD COME INTO THE DEALERSHIP THE NEXT MORNING TO DRIVE WITH ONE OF THEIR MECHANICS BECAUSE THEY COULD NOT DUPLICATE THE PROBLEM WITH THE TRANSMISSION. I WAS UNABLE TO DO SO BECAUSE OF WORK. I WAS ALSO TOLD THAT THE AIRBAG LIGHT HAD NOT BEEN ON . I PICKED UP THE CAR THAT EVENING SINCE, "NOTHING WAS WRONG WITH IT" AND WOULD BE UNABLE TO TEST DRIVE IT WITH A MECHANIC. . I DO NOT UNDERSTAND WHY THE DEALERSHIP IS SAYING THAT THE AIRBAG LIGHT HAS NOT BEEN ON THE LAST SEVERAL TIMES WHEN IT HAS BEEN. THE TRANSMISSION SPORATICALLY DOWNSHIFTS WHEN I AM DRIVING ON THE FREEWAY ON A STRAIGHT AND LEVEL SURFACE AT A CONSTANT SPEED. IT ALSO HESITATES SOMETIMES WHEN STARTING OFF FROM A DEAD STOP. IF YOU WOULD LIKE ANY OF THE INVOICES STATING THE REPAIRS THAT HAVE BEEN DONE TO THESE TWO PROBLEMS, PLEASE CONTACT ME. THANK YOU FOR YOUR HELP. *AK

IF ACCELERATED UP TO 45MPH SPEED SLOWED DOWN, AND CONSUMER HAD TO RELEASE THE SPEED, TRANSMISSION WAS STALLING. VEHICLE HAS BEEN IN THE SHOP SEVERAL TIMES. DEALERSHIP HAS BEEN NOTIFIED. *AK