2020 Kia Telluride transmission problems

Filed Nov 3, 2026 · Transmission · NY

Kia Tellurides produced between Feb and Dec 9, 2019 had software issues related to the torque converter solenoid pressure (too low to securely mate torque converter clutch) and over-sensitivity trouble code P0741, which indicates torque converter clutch slip. Kia fixed this software issue for the remainder of 2020 production, starting Dec 10, 2019. Kia also issued TSB TRA089 in April 2020 to reflash the transmission control unit (TCU) but would only do this on vehicles with an active check engine light (CEL), rather than reflashing all affected vehicles with proper TCU firmware. Many customers, including myself, were unaware of the clutch damage that took place as a result of outdated TCU firmware and drove our vehicles with constant micro-slip events, which prematurely wears out the torque converter clutch. This is why there are so many torque converter failures on 2020 Kia Tellurides between 80~120k miles. I now have a 2020 Kia Telluride with 126k miles built on Dec 6, 2019 (3 days before the TCU firmware was fixed), and my torque converter is slipping badly. It is now a safety concern because the vehicle is unpredictable and may or may not properly engage the torque converter. The torque converter must now be replaced and fluid flushed; however, metal shavings also have negative impacts on the transmission and could require a full transmission replacement. This issue is not normal wear and tear. It is a known clutch slipping issue that Kia chose not to address until customer vehicles break down catastrophically. Now owners are on the hook for expensive torque converter and transmission repairs, while this expense could have been avoided with a TCU reflash that Kia knew about for nearly 7 years - since Dec 10, 2019. After this date, vehicles came stock with updated TCU firmware that applied sufficient clutch solenoid pressure to prevent constant microslip events and premature torque converter clutch wear out.

Filed Jun 30, 2026 · Electrical, Transmission · 100,000 miles · MO

The contact owns a 2020 Kia Telluride. The contact stated that while driving approximately 60-65 MPH on the highway, the vehicle suddenly shut off and the battery warning light was flickering and the vehicle lost power. The contact was able to coast the vehicle into a parking lot off the highway where the vehicle remained. The contact replaced the battery; however, approximately one hour later while driving 50-55 MPH on the highway, the vehicle lost power and shut off. The vehicle was coasted onto the shoulder of the roadway. The vehicle was towed to an independent mechanic where the vehicle was diagnosed with alternator failure. The alternator was replaced. The contact was notified of a possible transmission failure; however, there was no fault codes retrieved. The vehicle was later taken to a dealer to be diagnosed. The dealer informed the contact that the head gasket was damaged, and the spark plugs needed to be replaced. Additionally, the contact was informed that the transmission needed to be replaced. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.

Filed Jun 26, 2026 · Engine, Transmission · TX

I am filing this complaint regarding my 2020 Kia Telluride because of excessive oil consumption that Kia has refused to address. My vehicle currently has approximately 138,000 miles and consumes about one quart of engine oil every 500 miles. This level of oil consumption is excessive and creates an ongoing risk of engine damage if the oil level is not constantly monitored and replenished. After researching this issue, I discovered that many Kia owners have reported similar excessive oil consumption problems. Despite the large number of complaints, Kia has not issued a recall or provided assistance for owners whose vehicles experience this problem after the factory warranty expires. I sought assistance from my local Kia dealership. At one point, the service manager attempted to advocate for me and other customers by bringing these concerns to Kia corporate. I later learned that he was no longer employed there. They have completed oil consumption tests and agreed my car is consuming a significant amount of oil. They conducted a “band aid” fix that did not help. The last appointment when we brought it in, all they did was check oil levels again. Since then, my concerns have largely been ignored, and I have been offered no meaningful assistance. While I understand my vehicle is outside the warranty period, a vehicle should not consume one quart of oil every 500 miles under normal operation. This appears to be a widespread issue rather than normal wear and tear. I respectfully request that this complaint be investigated and added to the record of similar complaints involving Kia vehicles. I also ask that Kia be encouraged to provide assistance to affected owners whose vehicles suffer from excessive oil consumption caused by what appears to be a common defect. Thank you for your time and consideration.

Filed Jun 18, 2026 · Transmission · 84,000 miles · IN

The contact owns a 2020 Kia Telluride. The contact stated that while driving with the AWD activated in the rain, the vehicle ran off the road. There were no warning lights illuminated. The contact spoke to the seller, who confirmed a previous failure with the AWD coupler. The vehicle was taken to the local dealer, who was unable to duplicate the failure. The vehicle was not diagnosed or repaired. Another local dealer, Kia Service - Southlake Kia (4191 E Lincoln Hwy, Merrillville, IN 46410); was contacted but the vehicle was not diagnosed or repaired. The dealer stated that there was no warranty coverage on the vehicle for the failure. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 84,000.

Filed Jun 12, 2026 · Electrical, Transmission · CA

A continuation from my last post. I brought my car back to the dealer.The worker came out to inspect my car and he lifted the hood and he said I had a loose negative battery cable and that I had the wrong battery in my car. He said that might be the cause of the flickering lights.My car was at the dealership for three days before I was called to come pickup my car.He stated they found another service update that my car needed P0471 and that cleared my check engine light and the battery he said once again I have the wrong battery in my car and they were only able to tighten the negative cable so much.I explained to him that it was the correct battery because I went to Walmart where the battery was purchased and they auto manger printed out that paperwork that shows it is the correct battery for that car.Then he had me sign for my car and I left.While driving home my battery light stared flickering again.So I called him and said I thought you were able to tighten the negative cable to the battery. He then said they did the best they can do because it is the wrong battery.After he got off the phone all my lights on my dashboard lit up.My car seemed possessed.My steering locked up and brakes were not working.Scared and crying i called him back and was telling him what was happening to my car.He said once again it was due to battery. Crying I said I'm scared what do I do?He advised me to put my car in netural and try to pull off to the side.I explained to him that I was on the freeway in 5pm traffic my hazards, signals and brakes aren't working.I then asked him what do I do once I can stop the car.Do I bring it back to the dealership? He said the only thing they can do if i bring it back is to have me buy a new battery.At this point the car completely turned off.I was able to roll off the freeway then my car stopped completely violently as if someone slammed the the brakes.Now they want me to buy a new alternator and transmission.Car had no issue before taking it in.

Filed Jun 8, 2026 · Transmission · IN

The vehicle was taken in several times for a vibration, binding coming from the rear. It has been ongoing back to the original owner. It is the all wheel drive coupler. This is a known issue with TSBs out on it. Kia has been contacted and seems unwilling to help, replace. Online thousands of these things have failed some even twice. In icy or slippery conditions this can cause loss of control due to binding.

Filed May 22, 2026 · Transmission · NY

I own a 2020 Kia Telluride currently with approximately 91409 miles. The vehicle has a repeatable transmission issue during acceleration, most noticeable around 40 mph when the transmission shifts. The vehicle shudders/hesitates/jerks and does not accelerate smoothly. This creates a safety concern because the hesitation occurs during normal acceleration and could affect merging, passing, or maintaining speed in traffic. I brought the vehicle to Vision Kia of East Rochester, 201 East Linden Ave, East Rochester, NY 14445 on 2/4/26 at approximately 88067 miles. The Kia service manager/technician duplicated the concern during inspection/road test and stated that the issue is related to the torque converter damper clutch. However, I was told the dealer would not repair the vehicle unless a warning light/check-engine light comes on. No warning light is currently illuminated. I am reporting this because the transmission defect has been observed by the dealer while the vehicle is still under warranty, but no repair has been authorized. I am concerned that the condition may worsen and could cause delayed acceleration or unsafe drivability.

Filed May 18, 2026 · Acceleration, Engine · KS

I was driving down the interstate when all of a sudden, I hear a bang, and my power went crazy, couldn't push the gas at all, my car was suddenly shut off. We coasted to the side of the interstate and got out to see a pile of oil underneath my car. Called a tow truck to help us and he found a massive hole in the engine block / oil pan - catastrophic engine failure. I have 117k miles on my car BUT I have kept up with maintenance on this vehicle. There should be no reason for this to happen. This put my family in immediate danger.

Filed Apr 9, 2026 · Fuel system, Transmission · NJ

While driving on a highway at approximately 50 mph, the vehicle suddenly lost acceleration without warning and was unable to exceed approximately 10–15 mph. This created a dangerous situation requiring immediate maneuvering across multiple lanes of traffic to reach safety. At the time of the incident, the check engine light was illuminated. Diagnostic trouble codes P0191, P2177, and P2179 were later identified, indicating fuel pressure irregularities and air/fuel imbalance. The vehicle was inspected by a dealership, which diagnosed a purge valve vacuum leak and faulty high-pressure fuel system components. The repair required replacement of the purge valve and high-pressure fuel system components. The failure involved components within the fuel/propulsion system and engine systems, which are controlled in part by the electronic control module (ECM). This resulted in a sudden and unexpected loss of propulsion while driving at highway speed. Prior to the incident, there were issues with refueling, including difficulty filling the fuel tank when near empty, indicating a potential developing issue within the fuel system. This condition created a significant safety risk due to the sudden and unexpected loss of vehicle speed in active highway traffic, increasing the risk of collision.

Filed Mar 25, 2026 · Transmission · CO

My transmission failed at 95k miles and was available for inspection at a fee. My safety was at risk since my car was jerking on the highway and I had to quickly pull over while the car slowed down in a fast and high trafficked area. The problem has been an ongoing issue especially in 2020 models from social media and the dealership. The vehicle was inspected by the Kia dealership. The engine light did not come on until the car showed immediate signs of issues.