Automatic Transmission Control Module Problems of Hyundai Tucson

While driving the vehicle, while accelerating the vehicle would lose power or disengage from gas pedal at 17 mph and then again at 26 mph. After about 3 miles the check engine light came on and a tcm warning appeared on the radio screen. Immediately took the car to the dealership and was turned away since I didn’t have an appointment. On my way home from the dealership I made a stop at a store. I reversed out of the parking spot with no issues. When I put the vehicle in drive, it would not accelerate. I could drive in reverse but not forward. Vehicle was towed to the dealership. Diagnostics revealed it was a failed tcm. Further research revealed this same issue occurred in 2016 models. How was this not fixed or prevented in later models?.

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Tcm component failed. Cause engine light to come on. During driving I went into reverse and it immediately stopped and shut completely off. If I was on the highway I would be in a severe accident. Hyundai inspected it but won’t give me the diagnosis or the issue with the car specifically. Initially when it happened no lights were on. It just shut down and wouldn’t move. A couple days later check engine came on.

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A few months after purchasing the vehicle in April 2017 I took it in for service and complained about a hesitation in acceleration. I informed the dealer that the problem occurred in normal driving mode and was worse in eco mode. The dealer checked for the latest tcm update, said it had the recall update installed and said that all was ok and don't drive in eco mode. On a number of occasions since then, the vehicle continued to exhibit hesitation sporadically in regular mode, but also had a more serious fault. A number of times at busy intersections, the vehicle refused to move for a few seconds. This became a panic situation as the vehicle was momentarily "stalled" in oncoming traffic when making left turns. I reported this to the dealer service and they again checked and said the vehicle has the latest tcm update. Subsequently I have noticed that the car has occasional hesitation but have not had the more serious "refused to move" situation. Since it is a sporadic problem I have grave concern that it could happen again. The dealer advised me to call Hyundai customer service. After speaking to a customer service specialist today I received two offers; trade your car in for whatever the dealer offers with no Hyundai CO. Assistance, and information about how the dual clutch transmission works. So I am supposed to accept that I made a mistake in buying my 4th Hyundai and Hyundai made no mistake, or I am an ignorant fool who needs to educate myself. I was offered a gift card to placate myself. Really? I put myself and my family at risk for a gift card. . . This is unacceptable as Hyundai is not acknowledging their engineering and manufacturing problem and the danger that this flaw entails. If a serious accident happens as a result of this problem they will be on the hook for much more than a gift card.

See all problems of the 2016 Hyundai Tucson 🔎.

10-31-2015 purchased vehicle. 10-31-2015. 3-2-2016 mileage 1691, returned vehicle back to Hyundai dealer for ecm engine control module & tcm transmission control module software updates per ty8 hard shifting complaints. 7-22-2016 campaign 145 secondary hood latch repair. 10-21-2017 campaign 149 ecm & tcm software update for dct problems. 5-2-2017 t1b ecm software update for dct problems. Software update improves transmission jerking from 0 to 15 mph. 5-21-2017 mileage 12,500, outside temp 70 deg f, stranded on interstate, transmission in drive but not vehicle not moving. Vehicle towed to dealer. Hyundai service finds faulty fuel tank pressure sensor and bad wiring harness. Replaces both. 5-23-2017 picked up vehicle and drove normal on way home. I have lost confidence in this vehicle and wished I had purchased the se model with the 6 speed conventional transmission and not the 7 speed dual clutch transmission. Time will tell if this last repair will solve the numerous dct problems.

The contact owns a 2016 Hyundai Tucson. While attempting to accelerate through an intersection at 5 mph, the vehicle failed to accelerate without warning. The vehicle was taken to a dealer where it was diagnosed that the transmission control module failed and needed to be repaired. The vehicle was repaired, but the failure recurred multiple times. The manufacturer was notified of the failure. The approximate failure mileage was 5,700.

As others have noted, the dct seems to have a severe problem when trying to quickly accelerate from a stopped position. The car will generally creep forward a few feet at a very slow crawl of 1-2 mph, but will not actually take off until 3-5 seconds into pushing the pedal. This behavior of the car can cause you to be out in oncoming traffic for upwards of 5-7 seconds or longer. This is a very severe safety issue as a car should never have a delay in acceleration of more than 1-2 seconds let alone 5 or more. I have been in several near accidents due to his when trying to make left hand turns on busy streets appearing as I am intentionally creeping into oncoming traffic like I want to have an accident and not moving. I have taken the car to the dealer and one of the service individuals stated to me this is a known problem, but there is no fix. He suggested reprogramming the tcm (I will be making an appointment to do this when I have time to leave the car), but he did tell me he has not seen much success with the reprogramming or that there might be improvement for a short period of time with return of the issue. My wife will not even drive the car because she has no trust that she will not get killed in our area with busy streets. My father owns a repair shop in another area of our state and we are recommending to anyone to stay away from any of the Hyundai vehicles at this time as the company does not appear to care about safety if this is a know issue without a solution.

Weeks following service at Hyundai dealer to have NHTSA campaign number 16v-628 requiring reprogramming of transmission control module, we have had 2 (two) near miss collisions due to car hesitating during turn from a stop and straight from stop sign. One; during legal left turn across 2 oncoming lanes, car started to roll than lose power while broadside to traffic. Oncoming traffic forced to stop until several complete cycles of the accelerator did get the vehicle moving again. Engine did not stop. Second at intersection from complete stop. Standard acceleration applied, vehicle started to roll (from release of brake) then stalled. Accelerator was repeatedly cycled several times before vehicle started to move. Car behind forced to stop suddenly missing rear bumper. Vehicle also had instance of a power train loss for about 1 second then sudden and powerful jolt during acceleration (estimate speed range about 40 mph) onto a highway from an on ramp. Despite service to address recall notice, vehicle shudders more during rolling starts and stops. Difficult in slow moving areas including car ferries typical to regional commute. Have taken to dealer (documented) following incident 1 and on ramp jolt. They observe the continuing shudder. They have taken vehicle for test rides but do not see the stall that is sporadic. Note, incident 2 as described above occurred approximately 1 week following service to observe this defect. Hyundai service aware of shudder and unable to resolve and conclude "they are in the hands of the engineers. " they hand out a document explaining the dual clutch system in an attempt to normalize these occurrences.

This issue has only happened while driving on a city street. As I accelerate from a standing stop the engine will rev up to match the accelerator petal but the transmission will not engage. I let off the petal and attempt to move again with not luck. I shift the vehicle into neutral then back into drive with the same results. After the third or forth attempt the vehicle will start to move slowly then accelerate rapidly as the transmission fully engages. This is a 7 month old vehicle with 13k miles and this issue was first noticed at about the 10k mark. This issue was brought to the dealers attention who informed me that this was know issue with the tuscon with the new 1. 6 turbo and 7 speed dual clutch transmission. The dealer followed the mfg advice to reset the ecm (engine control module) and the tcm (transmission control module) this was done and within 100 miles for the reset the issue was back and even worse. The vehicle is no longer safe to operate because of the randomness of the issue so the vehicle was left at the dealer on 7-26-2016 awaiting an answer from Hyundai on a permanent fix. As of 7-26-2016 no update or even acknowledgement of the issue has been received by the dealer or the owner. A complaint was filed with Hyundai on 7-23-2016 and the owner is still awaiting a call back from a representative of Hyundai America.

The contact owns a 2016 Hyundai Tucson. On several occasions, while driving, the accelerator pedal was depressed, but the vehicle failed to accelerate. The dealer was unable to duplicate the failure; however, the contact was informed that there was a transmission control module software update that may remedy the issue. The software was updated, but failed to remedy the issue. The contact stated that the failure was intermittent. The vehicle was not included in NHTSA campaign number: 16v628000 (power train, electrical system). The manufacturer was notified of the failure. The approximate failure mileage was 2,000.

Twin clutch seven speed transmission needs updating hesitates on acceleration from a start at a red light / stop sign / etc. Jerking auto & creating vibrations in driving axles had dealership install tcm sw update {15-01-050} on Jan 14 2016 still have same results on occasions help!!!!!!!!!.

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.

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