2012 Kia Optima Power Train

The contact owns a 2012 Kia Optima. The contact stated that while parking the vehicle, the gear shifter was shifted into park; however, the message to shift to park was displayed. In addition, the contact stated that there was a delay while shifting gears. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact stated that the vehicle was taken to several dealers, and the failure was not duplicated. The contact was informed by one dealer that the transmission needed to be replaced. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact researched and determined that the failure was related to the TCM failure. The manufacturer was made aware of the failure. The failure mileage was approximately 78,000.

The failure involves the component covered under the active safety recall campaign. The affected part/system is still installed on the vehicle and is available for inspection upon request by the manufacturer, dealership, or NHTSA. Recall number : 23V6552 While driving in traffic, the vehicle suddenly began to slow down without warning, started jerking, and lost normal operation. I was forced to pull over to avoid a collision. This sudden loss of power and control placed me, my passengers, and surrounding drivers at risk of an accident. Yes. The issue was confirmed by an authorized dealership. The dealership acknowledged that the problem is directly related to the active safety recall but refused to perform the repair due to vehicle mileage exceeding 150,000 miles. The vehicle has been inspected by an authorized dealership representing the manufacturer. No inspection has been performed by police or insurance representatives at this time. No warning lights or messages appeared prior to the incident. I had not received the recall notification letter at the time I purchased the vehicle. The first occurrence happened suddenly on 12/10/2025, when the vehicle began slowing down and jerking in traffic. After I pulled over and parked, multiple warning lights and messages appeared, and the steering wheel stopped moving normally. This vehicle has an open NHTSA safety recall. Safety recalls do not expire based on mileage or ownership. The dealership acknowledged the issue is recall-related but refused to perform the repair due to mileage limits, which is inconsistent with federal safety recall requirements.

The contact owns a 2012 Kia Optima. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. The check engine warning light eventually became illuminated, and the vehicle was taken to an independent mechanic to be diagnosed. The mechanic retrieved a fault code for the engine variable valve timing solenoid. The contact was informed that the engine variable valve timing solenoid needed to be replaced. The contact called a dealer and was informed that there were no recalls on the vehicle for the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 130,000.

The contact owns a 2012 Kia Optima. The contact stated while driving at 55 MPH, he heard an abnormal grinding sound coming from the engine. There was no warning light illuminated. The contact was able to continue driving. The contact stated that the failure had been reoccurring while driving. The vehicle was taken to the dealer where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist as the warranty had expired. The failure mileage was approximately 45,000.

The shifter cable came off during the car was on motion in my driveway..and unable to put it in PARK. My driveway has quite inclining uphill.. imagine if the car would roll back .. or simply the fact it worries me if that could happen somewhere away i would totally get stranded.. upon google i was able to confirm that KIA using the cheap parts and this happened to others also.. My boyfriend was able open gear console cover and snapped the cable ring back ...KIA should replace this part ASAP. BTW .. this was the second time it happened within a year

My wife had been complaining that while driving 2011 optima hybrid at highway speeds the car would suddenly lose power and slow to 30 or 40 mph while the pedal is floored. Took it to the dealer who said we needed a new battery which did not solve the problem. 2nd time came with a warning on the dash to check hybrid system, back at the dealer they said it appears to be some special fuse in the trunk ($300)…problem sill persist however this time the car completely shut down on the road, dash was lit up like a Christmas tree. Had to get it towed. Now dealer says its the HPCU and that’s going to run almost $6000. Dealer was willing to install a used one i got on EBay, they charged $1300 for the install they tell me the problem still exists.

KIA OPTIMA EX 2012 WITH 57000 MILES TRANSMISSION IS STUCK ON R (REVERSE) AND IT DOESN'T RELEASE EVEN WITH THE SHIFT LOCK RELEASE ENGAGED. THE BACKUP CAMERA IS ON, BRAKE IS VERY STIFF, THE CAR IGNITION CAN BE ON/OFF BUT DON'T STARTS THE ENGINE. DASH AND SHIFTER INDICATOR SHOWS R AND IT DOES NOT CHANGE TO ANY OTHER STATUS. VEHICLE IS INOPERABLE.

APRIL 2018 WAS DRIVING HEARD LOUD NOSE FROM ENGINE, HYBRID SYSTEM CAME ON , HYBRID SYSTEM WARNING TURN OFF ENGINE. ENGINE LOCKED UP.TOWED HOME.PULLED OIL PAN. BRASS BEARINGS BOTTOM OF PAN.CRANKSHAFT AND PISTON ROD BEARNIG WERE IN PIECES. HAD ENGINE REBUILT. MAY 2018. FILLED 2 COMPLAINTS THEN. ONLY 73,000 MILES.COMPANY'S GETTING AWAY FOR INSUFFICIENT ENGINES. TRIED TO SELL CAR. BUT NOT GOING TO GIVE AWAY.I DON'T WANT IT. I THINK I DESERVE COMPENSATION.

I STOPPED THE CAR AND TRIED TO PUT THE SHIFT LEVER TO PARK, THE CAR INDICATED THAT IT WAS STILL IN DRIVE. THE CAR WAS STUCK IN DRIVE EVEN THOUGH THE SHIFT LEVER WAS IN THE PARK POSITION. I TURNED THE VEHICLE OFF. I TRIED TO RESTART BUT IT WOULD NOT BECAUSE THE CAR THOUGHT THE TRANSMISSION WAS IN DRIVE. I COULD NOT MOVE THE SHIFT LEVER FROM PARK WITHOUT USE THE SHIFT UNLOCK. UPON INVESTIGATION I FOUND THAT THE TRANSMISSION SHIFT CABLE CAME DETACHED FROM THE SHIFTER LEVER. IT APPEARS THAT A PLASTIC RETAINER DISINTEGRATED.

CAR ENGINE DIED AND LOST POWER ON HIGHWAY PUTTING ME AT RISK OF GETTING INTO AN ACCIDENT. I HAD TO PULL OVER ON SHOULDER QUICKLY AND THEN BLEW OUT A TIRE A I RAN OVER A UNAVOIDABLE OBJECT ON THE SIDE OF THE ROAD.

TL* THE CONTACT OWNS A 2012 KIA OPTIMA. THE CONTACT STATED THAT WHILE DRIVING AT 40 MPH, THE VEHICLE STARTED HESITATING AND THE REAR BRAKE LIGHTS WERE ILLUMINATED WITHOUT THE BRAKE PEDAL BEING DEPRESSED. THE VEHICLE WAS TAKEN TO LOCAL DEALER SHAWNEE MISSION KIA (7951 SHAWNEE MISSION PKWY, MERRIAM, KS 66202, (913) 384-9100) WHERE IT WAS DIAGNOSED THAT THE SHIFT SOLENOID NEEDING TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS 107,408.

ENGINE LIGHT CAME ON WHILE DRIVING. WHEN STARTING CAR, IT'S NOT STARTING AS IT SHOULD AND STAKING LUGGING AND SLUGGISH WHILE DRIVING. COUNTRY ROAD DRIVING APPROXIMATELY 45 MPH..

WHILE DRIVING ON MANY CITY STREETS 0-45MPH AND INTERSTATE 0-70MPH SERVICE ENGINE LIGHT COMES ON AND GOES OFF PERIODICALLY. WHEN THE LIGHT IS ON, CAR SHAKES AND SPUTTERS AS TRANSMISSION GEARS SHIFT (NOT ENGNE). APPEARS TO BE SOMETHING TO DO WITH THE TRANSMISSION. CAUGHT THE LIGHT ON AND READ CODE P0711. ACCORDING TO TSB 043 [REV ] /2/2013 THIS IS AN INTERNAL PROBLEM AND MUST BE CORRECTED BY A LICENSED MECHANIC.

TL* THE CONTACT OWNS A 2012 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE WENT IN AND OUT OF GEAR AND FINALLY LOST ALL ACCELERATION. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE CONTACT HAD TO PULL OVER TO THE SIDE OF THE ROAD TO A COMPLETE STOP AND THEN RESTARTED THE VEHICLE. THE CONTACT DROVE THE VEHICLE TO WORK AND BACK HOME WITHOUT ANY ISSUES. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED CASE NUMBER: K32Q8186. THE APPROXIMATE FAILURE MILEAGE WAS 42,900.

CAR WILL JERK HARD WHEN CHANGING GEARS. IT HAPPENS WHILE GOING IN SPEEDS BELOW 45 MPH. THE CAR WILL JERK REALLY HARD WHILE DRIVING AND THE RPMS WILL JUMP FROM 2-3 STRAIGHT UP TO 6. IT HAS HAPPENED SEVERAL TIMES IN THE LAST WEEK. I AM TAKING IT TO THE KIA DEALER TO SEE IF THEY CAN LOCATE AND FIX THE PROBLEM. BASED ON WHAT I HAVE READ HERE, THERE DOESN'T APPEAR TO BE A FIX. I AM REALLY CONCERNED IT WILL ACCELERATE AND CAUSE ME TO HAVE AN ACCIDENT.

JERKING AND LOSS OF ACCELERATION WHEN DRIVING AND WHEN SHIFTING IN PARKING/REVERSE. WHEN SHIFTING IN REVERSE IT MAKES A JERK AND MAKE A THUD. SAME THING IN DRIVE BUT A LITTLE MORE HARSH. JERKING ALSO JUST WHEN SHIFTING TO DRIVE AFTER STARTING THE CAR. EVEN WHEN I DRIVE IT WOULD GIVE A JERK A FEW TIMES WHEN SWITCHING GEARS, AND ALSO WHEN I BRAKE TO SLOW DOWN IT DOES IT. I ALSO REMEMBER THE CAR SHAKING ONE TIME WHEN I TURNED IT ON. IT ALSO LOST ACCELERATION WHILE DRIVING TO WORK IN A 45 MPG AREA. HAD TO PULL OVER AND SHUT/RESTART THE CAR A FEW TIMES. TAKEN IN TO KIA EACH TIME THIS HAPPENED. LAST NIGHT, JUNE 30, WAS THE FORTH TIME. KIA CAN'T FIGURE OUT WHAT'S WRONG WITH IT. IT IS SCARY AND UNSAFE AS I FEEL IT CAN CAUSE A REAR-END ACCIDENT.

VEHICLE HAD RANDOM ABNORMAL JERKING, BUCKING AND CLUNKING BY THE TRANSMISSION DURING NORMAL ACCELERATION, WHICH CAUSES ABNORMAL DECELERATION. THIS COULD CAUSE AN ISSUE WITH NORMAL DRIVING AND CAN CAUSE A REAR END ACCIDENT. THE CAUSE OF THIS AFTER VEHICLE WAS TAKEN TO THE DEALER, IS THE TRANSMISSION TEMPERATURE RELAY. APPARENTLY THE MECHANIC ADVISED THAT OTHER VEHICLES HAVE BEEN BROUGHT IN WITH THE SAME RELAY ISSUE AND THERE HAS BEEN NO RECALLS ON THE PART. *TR

FIRST THING CAR WAS NOT SHIFTING GEARS. DEALER REPLACED TRANSMISSION. SECOND OCCURRENCE PULLED OUT AND CAR LOST POWER WAS ABLE TO PULL OFF ROAD TURN IGNITION OFF AND RESTARTED CAR WAS OK. DEALER REPLACED ENGINE CONTROL MODULE. NEXT OCCURRENCE NOV 2012 CAR DID SAME THING RESTARTED WAS OK ENGINE LIGHT WENT OFF AFTER 2 DAYS. NOW JAN 2013 COLD MORNING STARTED DRIVING ENGINE HAD NO POWER. I GOT TO A OPEN ROAD SLOWLY PUSHED ACCELERATOR TO FLOOR WITH NO RESPONSE. CAR IS NOW IN DEALERSHIP I'M WAITING FOR MY PHONE CALL. *TR

TL* THE CONTACT OWNS A 2012 KIA OPTIMA. THE CONTACT STATED THAT WHILE DRIVING 70 MPH, THERE WAS A GRINDING NOISE COMING FROM THE FRONT DRIVER'S SIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER AND AFTER INSPECTION, THEY INFORMED HER THAT THE FRONT AXLE SHAFT DETACHED FROM THE TRANSMISSION. THE TECHNICIANS REMOVED AND REPLACED THE RIGHT AXLE SHAFT, AND ALSO REASSEMBLED AND RE-TESTED THE VEHICLE. THE CONTACT STATED THAT THE FAILURE RECURRED TWICE. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 16,000.

WHILE DRIVING APPROXIMATELY 25MPH I HEARD A LOUD 'BANG'. SHORTLY THEREAFTER, MY OPTIMA WOULD PERIODICALLY SHIFT GEARS VERY ROUGHLY ON DOWNSHIFTS. THERE WAS ALSO A 'CLANKING' NOISE PRESENT ON THE ROUGH DOWNSHIFTS OR WHEN THE OPTIMA WAS SHIFTED INTO REVERSE. UPSHIFTS WHILE ACCELERATING SEEMED TO FUNCTION NORMALLY. I IMMEDIATELY BROUGHT THE CAR TO THE DEALERSHIP WHERE IT WAS PURCHASED. THE DEALERSHIP DETERMINED A BOLT HAD SNAPPED ON THE TRANSMISSION MOUNT CAUSING THE TRANSMISSION TO KNOCK INTO THE ENGINE WHEN IT SHIFTED. IT WAS THE BELIEF OF THE DEALERSHIP THAT THE BOLT HAD BEEN UNDER TORQUED WHEN IT WAS ASSEMBLED IN THE FACTORY. THE SUBFRAME AND A DENTED PIECE OF THE EXHAUST HAD TO BE REPLACED. THIS SEEMS VERY DANGEROUS TO ME, ESPECIALLY HAD IT OCCURRED ON AN EXPRESSWAY AT A HIGH RATE OF SPEED. *TR

AFTER WARMING UP ENGINE I DROVE ONTO THE ROAD AND ONTO A FREEWAY ENTRANCE RAM A QUARTER MILE FROM MY HOME. WHILE ENTERING THE FREEWAY, THE CAR "LOST POWER", IE NO THROTTLE RESPONSE, CAR WOULD NOT GO FASTER THAN 60 MPH. RPM WAS PEAKING OVER 3,000 RPM (HIGHER THAN NORMAL). I PUT THE AUTO/MANUAL FLOOR-SHIFT INTO MANUAL AND THE DASH SHOWED 4TH GEAR. I SHIFTED BACK AND FORTH BETWEEN AUTO AND MANUAL WITH THE SAME RESULTS SEVERAL TIMES, 4TH GEAR, OVER 3,000 RPM, LOSS OF POWER (NO THROTTLE RESPONSE), MAX SPEED 60 MPH. I NEARLY GOT REAR ENDED, CARS WERE DODGING ME. I WAS ABOUT TO PULL OFF THE ROAD AND EVERYTHING RETURNED TO NORMAL. I READ A SIMILAR REPORT A FEW MONTHS AGO FROM ANOTHER "NEW" OWNER OF AN OPTIMA AND THE DEALERSHIP "COULDN'T FIND" ANYTHING WRONG. I NOW HAVE READ LOTS OF WARRANTY-DENIED HORROR STORIES WITH KIA. THIS SEEMS LIKE A TRANSMISSION PROBLEM. I IMAGINE IT COULD BE A "COMPUTER PROBLEM" AS THERE ARE LOTS OF COMPUTERS IN THESE NEW CARS. I CAN'T FIND ANY TSB'S LISTED FOR TRANSMISSION RELATED PROBLEMS, BUT AM WONDERING HOW MANY OTHERS HAVE THIS "ELUSIVE" CONDITION? *TR

TL* THE CONTACT OWNS A 2012 KIA OPTIMA. THE CONTACT STATED THAT WHEN THE ACCELERATOR PEDAL WAS DEPRESSED THE RPMS REVVED ABNORMALLY HIGH BUT THE VEHICLE FAILED TO ACCELERATE PROPERLY. THE VEHICLE WAS TAKEN TO THE DEALER. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 400 AND THE CURRENT MILEAGE WAS 10,500.