2005 Hyundai Tucson Transmission Problems

Your 2005 Tucson has been plagued with persistent check engine codes since January 2021, starting with oxygen sensor and mass air flow sensor problems. You've had the mass air flow sensor, oxygen sensors, battery, alternator, CV boots, head gasket seals, and spark plugs replaced, but new codes keep appearing—most recently a catalyst system code (P0420) that hasn't been resolved even after using catalytic converter cleaner. The repairs may require diagnosis and replacement of the catalytic converter or related exhaust system components.

Your vehicle rolls downhill even when parked in Park gear. The dealer has adjusted the shifter cable multiple times, but the problem keeps returning 9-12 months later. This is a persistent issue with the transmission's Park engagement that may require replacing internal transmission components rather than just cable adjustment.

Your transmission shakes noticeably when you drive faster than 65 mph. This vibration is abnormal and suggests a transmission issue that needs attention. A mechanic will likely need to inspect the transmission fluid, filter, and internal components to identify the cause.

TL* THE CONTACT OWNS A 2005 HYUNDAI TUCSON. AFTER THE CONTACT RELEASED THE BRAKE PEDAL AND DEPRESSED THE ACCELERATOR PEDAL, THE VEHICLE FAILED TO ACCELERATE. THE CONTACT STATED THAT THE FAILURE ALSO OCCURRED WHILE DRIVING UP A HILL. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE ALTERNATOR AND SERPENTINE BELT WERE REPLACED, BUT THE FAILURE RECURRED. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND THE CONTACT WAS INFORMED THAT THE PLANT THAT BUILT THE VEHICLE WAS NOT INCLUDED IN THE RECALL. THE FAILURE MILEAGE WAS 159,000.

TRANSMISSION KEEPS SLIPPING OUT OF GEAR WHEN YOU PUT INTO GEAR AND CAR WON'T MOVE. YOU STOP AT A LIGHT AND EVEN THOUGH CAR IS IN GEAR IT WON'T MOVE. FLIP IT BACK AND FORTH ON AUTO GEAR SHIFT SOMETIMES IT MOVES. OTHER TIMES IT CHANGES GEARS OR SLIPS OUT. *TR

WHILE STOPPED AT A LIGHT THE ENGINE REVVED UP TO A HIGH RATE. I TRIED TO PUT THE TRANSMISSION INTO NEUTRAL BUT PUT IT INTO REVERSE INSTEAD, THE HIGH RATE OF REVS CONTINUED, FINALLY GOT IT INTO NEUTRAL AND ENGINE WENT BACK TO NORMAL IDLE SPEED. WHEN LIGHT CHANGED PUT TRANSMISSION INTO DRIVE AND PROCEEDED HOME (A FEW BLOCKS) WITHOUT INCIDENT. THIS HAPPENED ABOUT 13 MONTHS AGO WHEREBY THE MECHANIC REPLACED THE IDLE SPEED CONTROL AND THROTTLE POSITION SENSOR. ALSO THEY DID A THROTTLE BODY AND FUEL INJECTION SERVICE AT THAT TIME. *TR

TL* THE CONTACT OWNS A 2005 HYUNDAI TUCSON. THE CONTACT STATED THAT WHILE DRIVING 65 MPH, SHE ATTEMPTED TO ACCELERATE FURTHER, BUT THE VEHICLE WOULD NOT ACCELERATE BEYOND THAT SPEED. THE VEHICLE REMAINED STUCK IN THIRD GEAR WHILE THE CONTACT ATTEMPTED TO ACCELERATE FURTHER. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AT LEAST SIX TIMES, BUT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT BACK TO THE DEALER. THE FAILURE MILEAGE WAS 47,000.

TL* THE CONTACT OWNS A 2005 HYUNDAI TUCSON. THE CONTACT STATED WHILE DRIVING 45 MPH, THE ENGINE COMPLETELY SHUT DOWN WHEN THE ACCELERATOR WAS NO LONGER DEPRESSED. THE VEHICLE WAS TAKEN TO A DEALER, AND THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 57,000 AND THE CURRENT MILEAGE WAS 57,500.

MY WIFE'S HYUNDAI TUCSON (EITHER 2005 OR 2006) ALMOST CAUSED AN ACCIDENT TODAY WHEN THE ACCELERATION BECAME ERRATIC AND THEN STALLED WHILE AT AN INTERSECTION. SHE IMMEDIATELY BROUGHT IT INTO OUR HYUNDAI SERVICE CENTER. I SPOKE WITH A SERVICE MANAGER TO TELL HIM ABOUT A TPS (THROTTLE POSITION SENSOR) PROBLEM THAT I HAVE FOUND OUT ABOUT SPECIFIC TO THE 05-06 HYUNDAI TUCSON. I ALSO CALLED HYUNDAI BECAUSE THIS PROBLEM WILL NOT SHOW UP AS A 'FAULT CODE'. I HAVE INCLUDED HERE ONE OF MANY NOTES FOUND ON THE INTERNET CONCERNING THIS SAME PROBLEM: AFTER HAVING OUR 2006 TUCSON IN THE DEALER'S SERVICE SHOP FOR OVER THREE DAYS, IT WAS DETERMINED THAT THE CAR NEEDED A NEW TPS(THROTTLE POSITION SENSOR). THIS WAS AFTER THEY CONTACTED HYUNDAI TECHLINE AND AFTER I SUGGESTED THAT THEY TEST THE TPS AS A POSSIBLE CAUSE (CAME TO THIS CONCLUSION AFTER REVIEWING MANY WEBSITES/AUTOFORUMS. SOME FACTS: YOU WILL NOTICE A STUTTERING OR JERKING FEELING ALMOST AS IF YOU HAD A MANUAL TRANSMISSION, WERE DOWNSHIFTING AND RELEASING THE CLUTCH QUICKLY WHEN THE ENGINE RPM WAS NOT MATCHED TO THE LOWER GEAR, OR AS IF YOU TAPPED ON THE BRAKE TWICE WHILE DECELERATING. THIS MOTION CAN BE EITHER VERY SLIGHT OR RATHER VIOLENT (ONCE CAUSED US TO BE ACTUALLY PUSHED AGAINST OUR SHOULDER SEAT BELT. 1. ALMOST ALWAYS OCCURS WHEN EITHER COASTING OR DECELERATING, NEVER WHEN ACCELERATING. 2. USUALLY HAPPENS BETWEEN 40 -45 MPH. 3. NO FAULT CODE EVER COMES UP SO DON'T EVEN HAVE THE TECH WASTE HIS TIME. THE SERVICE DEPARTMENT DROVE THE CAR FOR OVER THREE TOTAL HOURS TO TRY TO GET A FAULT CODE READING WITH NO RESULTS. 4. CAR WILL STALL WHEN COMING TO A STOP 50% OF THE TIME. 5. HAPPENS WHEN THE TRANSMISSION IS WARM. 6. FEELS LIKE TRANSMISSION IS TRYING TO FIGURE OUT WHAT GEAR IT WANTS TO GO INTO WHEN DECELERATING. *TR

DT*: THE CONTACT STATED WHILE STARTING THE VEHICLE, IT LURCHED FORWARD AND WOULD NOT ENGAGE INTO GEAR. ALSO WHILE DRIVING, THE 4WD LIGHT INTERMITTENTLY ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES WHO COULD NOT DUPLICATE THE PROBLEM.

THE PROBLEM WAS DISCOVERED AFTER A STOP FOR FUEL DURING A HIGHWAY TRIP. THERE WAS NO INDICATION OF TROUBLE BEFORE WE STOPPED FOR FUEL. WHEN WE ATTEMPTED TO RETURN TO THE ROAD WE FOUND THAT THE TRANSMISSION WOULD NOT ENGAGE IN EITHER A FORWARD OR REVERSE GEAR. AFTER CHECKING ATM FLUID AND FINDING IT CORRECT WE TRIED AGAIN AND FOUND SAME PROBLEM. WE FINALLY FOUND THAT IF WE INCREASED ENGINER RPM TO APPROXIMAGE 3000 RPM THE TRANSMISSION WOULD BEGIN TO ENGAGE IN THIRD GEAR WITH SOME SLIPPAGE. THE SLIPPAGE CONTINUED UNTIL WE REACHED THE APPROXIMATE SPEED FOR NORMAL THIRD GEAR. AT NORMAL HIGHWAY SPEED THE CAR OPERATED NORMALLY BUT WOULD NEVER SHIFT INTO 4TH GEAR. WE WRE ABLE TO GET HOME AND TO THE DEALER. THEY TOLD US THE TRANSMISSION HAD FAILED AND WOULD NEED TO BE REPLACED. ONE WEEK LATER AFTER INSTALLATION OF THE TRANSMISSION WE WERE TOLD THEY DID NOT LIKE THE SOUND OF THE POWER STEERING AND WOULD REPLACE THAT COMPONENT AS WELL. ANOTHER WEEK LATER WE GOT OUR VEHICLE BACK. THE DEALER CLAIMED THEY HAD NOT SEEN THIS PROBLEM NOR HAD THEY BEEN NOTIFIED OF THIS PROBLEM BY OTHER DEALERS. THIS OCCURRED AT 9500 MILES.

DT: CONSUMER STATED: SHIFT LEVER CABLE ASSEMBLY BROKE WHILE IN TRAFFIC AND VEHICLE HAD LESS 400 MILES. WAS SLOWING DOWN, CHANGING GEARS AND BROKE OFF INSIDE. VEHICLE WAS STUCK IN CENTER LANE, AND NO FOR WARNING. *AK

NEW HYUNDAI TUCSON 5 SPEED MANUAL 4 WHEEL DRIVE(2005) WITH LESS THAN 400 MILES DRIVEN, THE SHIFT LIVE BROKE OFF INSIDE TRANSMISSION. THIS WAS LIFE THREATINING. I WAS IN THE CENTER LANE EAST BOUND ON THE CROSS BRONX EXP. CAR COULD NOT MOVE. I WAS ABOUT ONE MILE EAST OF THE G.W. BRIDGE. THE PROBLEM WAS THE SHIFT LEVER CABLE ASSEMBLY DEFECTIVE. IT WAS REPLACED.

I WAS DRIVING DOWN THE HIGHWAY AT 60MPH WHEN THE VEHICLE MADE A LOUD SOUND A ROUGHLY JERKED FORWARD AND CONTINUED TO DO SO AS THE CAR GRADUALLY DOWNSHIFTED. THE CAR WAS FOUND TO HAVE A DEFECTED TRANSMISSION CONTROL MODULE AND THEY NEEDED TO REPLACE THE TRANSMISSION DUE TO THIS. THIS VEHICLE ONLY HAD APPROX 5900 MILES ON IT AT THIS TIME. RECIEVED THE VEHILE 9 DAYS LATER AND HAD THE CAR FOR 1 DAY WHEN IT CONTINUED TO HAVE MORE PROBLEMS RELATED TO THE TRANSMISSION. IN ADDITION TO THIS PROBLEM, THE FIRST FEW DAYS OF OWNING THIS VEHICLE I HAD TO STOP THE VEHICLE ABRUPTLY AND THE CAR ACCELERATED INSTEAD. I HAVE READ THAT OTHERS HAVE EXPERIENCED SOMETHING SIMILIAR TO THIS IN THE HYUNDAI SANTE FE