2017 Hyundai Ioniq Hybrid problems

UNKNOWN OR OTHER

The vehicle has suffered a catastrophic failure of the hybrid drive motor rotor, transmission, and engine clutch, resulting in a $14,993 repair quote. This is a direct consequence of a failed remedy for NHTSA Recall 18V260 (Hyundai Campaign 176).In February 2020, a dealer performed an 'inspection/cap' remedy under Campaign 176. However, this did not permanently fix the manufacturing burrs on the hydraulic clutch actuator housing. Over time, the inner oil seals degraded exactly as warned in the original defect report. Hydraulic fluid leaked into the electric stepper motor, causing an electrical short circuit that destroyed the entire hybrid powertrain. The vehicle lost propulsion and threw a severe Hybrid Warning Light on the dashboard. This represents a complete failure of a mandated safety recall remedy, introducing an active electrical short circuit and a severe vehicle fire hazard.

NHTSA complaint #11751771 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The vehicle has suffered a catastrophic failure of the hybrid drive motor rotor, transmission, and engine clutch, resulting in a $14,993 repair quote. This is a direct consequence of a failed remedy for NHTSA Recall 18V260 (Hyundai Campaign 176).In February 2020, a dealer performed an 'inspection/cap' remedy under Campaign 176. However, this did not permanently fix the manufacturing burrs on the hydraulic clutch actuator housing. Over time, the inner oil seals degraded exactly as warned in the original defect report. Hydraulic fluid leaked into the electric stepper motor, causing an electrical short circuit that destroyed the entire hybrid powertrain. The vehicle lost propulsion and threw a severe Hybrid Warning Light on the dashboard. This represents a complete failure of a mandated safety recall remedy, introducing an active electrical short circuit and a severe vehicle fire hazard.

NHTSA complaint #11751771 — an unverified report by a vehicle owner.

ENGINE

The vehicle has suffered a catastrophic failure of the hybrid drive motor rotor, transmission, and engine clutch, resulting in a $14,993 repair quote. This is a direct consequence of a failed remedy for NHTSA Recall 18V260 (Hyundai Campaign 176).In February 2020, a dealer performed an 'inspection/cap' remedy under Campaign 176. However, this did not permanently fix the manufacturing burrs on the hydraulic clutch actuator housing. Over time, the inner oil seals degraded exactly as warned in the original defect report. Hydraulic fluid leaked into the electric stepper motor, causing an electrical short circuit that destroyed the entire hybrid powertrain. The vehicle lost propulsion and threw a severe Hybrid Warning Light on the dashboard. This represents a complete failure of a mandated safety recall remedy, introducing an active electrical short circuit and a severe vehicle fire hazard.

NHTSA complaint #11751771 — an unverified report by a vehicle owner.

HYBRID PROPULSION SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated that the vehicle failed to start with several unknown warning lights illuminated. Additionally, the message "Starting Engine to Avoid Battery Discharge" was displayed. The vehicle was later towed to the local dealer who diagnosed that the 12-volt lithium battery had melted and expanded and needed to be replaced, along with the power relay assembly and fuse. The vehicle was not repaired. The manufacturer was contacted. The contacted stated that the vehicle was previously serviced and inspected under NHTSA Campaign Numbers: 22V459000 (HYBRID PROPULSION SYSTEM) and 18V704000 (HYBRID PROPULSION SYSTEM). The contact stated that the vehicle had experienced the failure listed in the recalls. The failure mileage was 135,262.

NHTSA complaint #11746265 — an unverified report by a vehicle owner.

POWER TRAIN

January 2022. The car was brought to dealership because the transmission was slipping in 3rd gear. Service light was on. On my way the problem fixed itself. I explained that it happened only in the extreme cold here in michigan. They documented for warranty. Said it may be due to clutch overheating on slippery roads. IT WAS NOT. The cars was not used for 2 winters as we were in Florida. Dec. 2025 it happened again and expressed my concerns that if this happened in traffic it could be dangerous. Both the dealership and Hyundai washed there hands of it even though I was assured that it would be covered and addressed it it happened again. The service light came on but the problem fixed itself . I do not believe this is a mechanical issue, it sure would have failed by now. Software/electronic.

NHTSA complaint #11707063 — an unverified report by a vehicle owner.

POWER TRAIN

Engine failure occurred on interstate. Car was jerking and smoke coming from the hood and exhaust while engine was giving out. Hyundai dealership confirmed something blew up within the engine and blew a hole out the side of it. Check engine light came on about 2 weeks prior notified Hyundai dealership as soon as this happened and they stated I had to wait 2 weeks to have the vehicle checked out.

NHTSA complaint #11685440 — an unverified report by a vehicle owner.

ENGINE

Engine failure occurred on interstate. Car was jerking and smoke coming from the hood and exhaust while engine was giving out. Hyundai dealership confirmed something blew up within the engine and blew a hole out the side of it. Check engine light came on about 2 weeks prior notified Hyundai dealership as soon as this happened and they stated I had to wait 2 weeks to have the vehicle checked out.

NHTSA complaint #11685440 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated while at a complete stop at a red traffic light, the vehicle stalled. The vehicle failed to restart and was towed to an independent mechanic, where it was diagnosed that the power relay assembly (PRA) located underneath the rear seat had failed and needed to be replaced; however, the part was not available. The vehicle was not repaired, but the mechanic overrode the computer system. The mechanic related the failure to NHTSA Campaign Number: 22V459000 (Hybrid Propulsion System). The contact stated that the VIN was previously included in the recall; however, the recall was marked as complete after the vehicle passed the inspection test. The contact stated while driving 20-25 MPH, the failure recurred. The vehicle was towed to the dealer, where the contact was informed that the vehicle could not be repaired under the recall. The vehicle was then towed to a second dealer, Keyes Hyundai of Mission Hills(10240 Sepulveda Blvd, Mission Hills, CA 91345), where it was diagnosed that the power relay assembly (PRA) located underneath the rear seat and the 12-Volt battery had failed and needed to be replaced; however, the part was on backorder. The manufacturer was notified of the failure and advised the contact that a goodwill discount could be provided at the dealer's discretion. A case was filed. The contact stated that after the manufacturer contacted the dealer, the dealer doubled the cost of the repair and provided a goodwill discount. The vehicle was not repaired due to the cost. The failure mileage was approximately 153,000.

NHTSA complaint #11672051 — an unverified report by a vehicle owner.

HYBRID PROPULSION SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated while at a complete stop at a red traffic light, the vehicle stalled. The vehicle failed to restart and was towed to an independent mechanic, where it was diagnosed that the power relay assembly (PRA) located underneath the rear seat had failed and needed to be replaced; however, the part was not available. The vehicle was not repaired, but the mechanic overrode the computer system. The mechanic related the failure to NHTSA Campaign Number: 22V459000 (Hybrid Propulsion System). The contact stated that the VIN was previously included in the recall; however, the recall was marked as complete after the vehicle passed the inspection test. The contact stated while driving 20-25 MPH, the failure recurred. The vehicle was towed to the dealer, where the contact was informed that the vehicle could not be repaired under the recall. The vehicle was then towed to a second dealer, Keyes Hyundai of Mission Hills(10240 Sepulveda Blvd, Mission Hills, CA 91345), where it was diagnosed that the power relay assembly (PRA) located underneath the rear seat and the 12-Volt battery had failed and needed to be replaced; however, the part was on backorder. The manufacturer was notified of the failure and advised the contact that a goodwill discount could be provided at the dealer's discretion. A case was filed. The contact stated that after the manufacturer contacted the dealer, the dealer doubled the cost of the repair and provided a goodwill discount. The vehicle was not repaired due to the cost. The failure mileage was approximately 153,000.

NHTSA complaint #11672051 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I own a 2017 Hyundai Ioniq Hybrid VIN: [XXX] that is covered under Recall 232 (NHTSA 22V-459) related to a defective Power Relay Assembly that poses a fire risk. I brought this issue to Hyundai 3 years ago and was told my vehicle was serviced. That turned out to be false. Recently, my car stalled on the road due to the exact electrical issue covered in Recall 232. I had it diagnosed by an independent mechanic, who confirmed it’s tied to the recall. I had the vehicle towed to a Hyundai dealership to have it repaired, but they: •Refused to prioritize the recall inspection •Attempted to charge me $230 for diagnostics •Told me it would take a week or more just to inspect the vehicle •Denied the urgency of the recall, despite the known fire hazard I informed the dealership service manager Tom Swire I was recording, and he still refused to put his denial in writing. I have the recording. Due to their refusal, I was forced to tow the vehicle to a second dealership at my own expense. Hyundai Corporate has opened a case file, but told me I must wait 2–3 days just to speak with a case manager despite this being a federally mandated safety recall tied to real-world safety fire risk. I am requesting NHTSA review this case and hold Hyundai and its dealership accountable for failing to honor Recall 232 within a reasonable and safe timeframe. I am also seeking reimbursement for towing and other out-of-pocket costs caused by their mishandling of this urgent safety issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11671675 — an unverified report by a vehicle owner.

FUEL/PROPULSION SYSTEM

I own a 2017 Hyundai Ioniq Hybrid VIN: [XXX] that is covered under Recall 232 (NHTSA 22V-459) related to a defective Power Relay Assembly that poses a fire risk. I brought this issue to Hyundai 3 years ago and was told my vehicle was serviced. That turned out to be false. Recently, my car stalled on the road due to the exact electrical issue covered in Recall 232. I had it diagnosed by an independent mechanic, who confirmed it’s tied to the recall. I had the vehicle towed to a Hyundai dealership to have it repaired, but they: •Refused to prioritize the recall inspection •Attempted to charge me $230 for diagnostics •Told me it would take a week or more just to inspect the vehicle •Denied the urgency of the recall, despite the known fire hazard I informed the dealership service manager Tom Swire I was recording, and he still refused to put his denial in writing. I have the recording. Due to their refusal, I was forced to tow the vehicle to a second dealership at my own expense. Hyundai Corporate has opened a case file, but told me I must wait 2–3 days just to speak with a case manager despite this being a federally mandated safety recall tied to real-world safety fire risk. I am requesting NHTSA review this case and hold Hyundai and its dealership accountable for failing to honor Recall 232 within a reasonable and safe timeframe. I am also seeking reimbursement for towing and other out-of-pocket costs caused by their mishandling of this urgent safety issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11671675 — an unverified report by a vehicle owner.

STEERING

THE 12V ION BATTERY SYSTEM PART NUMBER 37507-G2120 (ICCU) BATTERY FAILED WHILE DRIVING, CAUSING GAS ENGINE TO TURN OFF, WHICH CANCELS POWER BRAKING AND STEERING, MAKING VEHICLE IMPOSSIBLE TO CONTROL. READ MANY REPORTS ON REDDIT AND IONIQ FORUMS OF THIS HAPPENING. NO. IT IS UNOPERABLE THERE WAS NO WARNING WHAT SO EVER. NO LIGHT, NO SYMBOL, NOTHING. WAS TRAVELING 40 MPH ON A BUSY ROAD WITH FAMILY, DURING A LANE CHANGE THIS HAPPEND AND THE VEHICLE TURNED OFF COMPLETELY. I COULD NOT CONTROL VEHICLE, AND WENT INTO A DITCH. IN THE PROCESS WE WERE NEARLY SIDE SWIPED BY A LARGE PICK UP TRUCK WHOM ALSO WENT IN DITCH. THE 12V BATTERY WAS DEAD COMPLETELY, WOULD NOT START THE GAS ENGINE. JUST WAS DEAD. IM LUCKY TO BE HERE TELLING OUR EXPERIENCE.

NHTSA complaint #11665873 — an unverified report by a vehicle owner.

ENGINE

THE 12V ION BATTERY SYSTEM PART NUMBER 37507-G2120 (ICCU) BATTERY FAILED WHILE DRIVING, CAUSING GAS ENGINE TO TURN OFF, WHICH CANCELS POWER BRAKING AND STEERING, MAKING VEHICLE IMPOSSIBLE TO CONTROL. READ MANY REPORTS ON REDDIT AND IONIQ FORUMS OF THIS HAPPENING. NO. IT IS UNOPERABLE THERE WAS NO WARNING WHAT SO EVER. NO LIGHT, NO SYMBOL, NOTHING. WAS TRAVELING 40 MPH ON A BUSY ROAD WITH FAMILY, DURING A LANE CHANGE THIS HAPPEND AND THE VEHICLE TURNED OFF COMPLETELY. I COULD NOT CONTROL VEHICLE, AND WENT INTO A DITCH. IN THE PROCESS WE WERE NEARLY SIDE SWIPED BY A LARGE PICK UP TRUCK WHOM ALSO WENT IN DITCH. THE 12V BATTERY WAS DEAD COMPLETELY, WOULD NOT START THE GAS ENGINE. JUST WAS DEAD. IM LUCKY TO BE HERE TELLING OUR EXPERIENCE.

NHTSA complaint #11665873 — an unverified report by a vehicle owner.

SERVICE BRAKES

THE 12V ION BATTERY SYSTEM PART NUMBER 37507-G2120 (ICCU) BATTERY FAILED WHILE DRIVING, CAUSING GAS ENGINE TO TURN OFF, WHICH CANCELS POWER BRAKING AND STEERING, MAKING VEHICLE IMPOSSIBLE TO CONTROL. READ MANY REPORTS ON REDDIT AND IONIQ FORUMS OF THIS HAPPENING. NO. IT IS UNOPERABLE THERE WAS NO WARNING WHAT SO EVER. NO LIGHT, NO SYMBOL, NOTHING. WAS TRAVELING 40 MPH ON A BUSY ROAD WITH FAMILY, DURING A LANE CHANGE THIS HAPPEND AND THE VEHICLE TURNED OFF COMPLETELY. I COULD NOT CONTROL VEHICLE, AND WENT INTO A DITCH. IN THE PROCESS WE WERE NEARLY SIDE SWIPED BY A LARGE PICK UP TRUCK WHOM ALSO WENT IN DITCH. THE 12V BATTERY WAS DEAD COMPLETELY, WOULD NOT START THE GAS ENGINE. JUST WAS DEAD. IM LUCKY TO BE HERE TELLING OUR EXPERIENCE.

NHTSA complaint #11665873 — an unverified report by a vehicle owner.

STEERING

I have had issues with the car losing speed and start to flutter. The last time it did this it locked up my steering wheel and engine cut off this has been an ongoing issue with this car only had it less than a year and the dealership cannot remedy the issue there is some kind of electrical issue because all lights come on car has less than 50k moles on it this is my 5 visit to the dealership with no resolution have contacted the manufacturer

NHTSA complaint #11658566 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I have had issues with the car losing speed and start to flutter. The last time it did this it locked up my steering wheel and engine cut off this has been an ongoing issue with this car only had it less than a year and the dealership cannot remedy the issue there is some kind of electrical issue because all lights come on car has less than 50k moles on it this is my 5 visit to the dealership with no resolution have contacted the manufacturer

NHTSA complaint #11658566 — an unverified report by a vehicle owner.

ENGINE

I have had issues with the car losing speed and start to flutter. The last time it did this it locked up my steering wheel and engine cut off this has been an ongoing issue with this car only had it less than a year and the dealership cannot remedy the issue there is some kind of electrical issue because all lights come on car has less than 50k moles on it this is my 5 visit to the dealership with no resolution have contacted the manufacturer

NHTSA complaint #11658566 — an unverified report by a vehicle owner.

HYBRID PROPULSION SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated while driving at undisclosed speeds, several unknown warning lights illuminated, and the vehicle started to lose motive power. The contact pulled over and shut off the vehicle but was unable to restart the vehicle. Upon investigation, the contact discovered that the vehicle was included in NHTSA Campaign Number: 22V459000 (Hybrid Propulsion System). The vehicle was then towed to the dealer to be repaired; however, the contact was informed that the battery management system was defective and needed to be replaced. The contact was informed that the vehicle was out of warranty and was provided an estimate for the repair. The manufacturer was notified of the failure and referred the contact to the Better Business Bureau for assistance. The vehicle remained with the dealer unrepaired. The failure mileage was 12,903.

NHTSA complaint #11630538 — an unverified report by a vehicle owner.

POWER TRAIN

Unable for many time to get recall complete old recall was told not complete and now that i have an issue they are telling me it was done trans clutch . My car has been at the dealer for three months . It is at lafontaine hyuandi dearborn mi. The part i need to fix my engine /clutch has an indefinite date when it will be available. I had this same problem when my car was less than a year old with the drive shaft. I have been in contact with corporate Hyundai and the dealer we cannot get a hold of sometimes for a whole week. These engine problems have been a huge issue with Hyundai. The engine will suddenly slow down to 20s being a hazard risk. Dealers when i have tried to get recall wont do recall they say they only have one person who can do it. I have had recalls scheduled months out and then they cancel. The problem i am having directly relates to a closed recall per multiple mechanics. The recall caused oil to leak which is what dealer said happened . Please help!!

NHTSA complaint #11620312 — an unverified report by a vehicle owner.

ENGINE

Unable for many time to get recall complete old recall was told not complete and now that i have an issue they are telling me it was done trans clutch . My car has been at the dealer for three months . It is at lafontaine hyuandi dearborn mi. The part i need to fix my engine /clutch has an indefinite date when it will be available. I had this same problem when my car was less than a year old with the drive shaft. I have been in contact with corporate Hyundai and the dealer we cannot get a hold of sometimes for a whole week. These engine problems have been a huge issue with Hyundai. The engine will suddenly slow down to 20s being a hazard risk. Dealers when i have tried to get recall wont do recall they say they only have one person who can do it. I have had recalls scheduled months out and then they cancel. The problem i am having directly relates to a closed recall per multiple mechanics. The recall caused oil to leak which is what dealer said happened . Please help!!

NHTSA complaint #11620312 — an unverified report by a vehicle owner.

HYBRID PROPULSION SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated while driving 20 MPH, the check engine warning light illuminated. The vehicle lurched forward and then stalled. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to an independent mechanic, where it was diagnosed that the main power relay assembly had overheated, and the main power relay fuse was blown. The mechanic determined that the main power relay assembly and the fuse needed to be replaced. The mechanic determined that the failure was related to NHTSA Campaign Number: 22V459000 (Hybrid Propulsion System). The vehicle was then towed to the dealer for the recall repair; however, the dealer informed the contact that the recall repair was not necessary, and that the picture of the main power relay part would be sent to the manufacturer. The manufacturer was notified of the failure and a case was opened. The manufacturer contacted the dealer regarding the recall repair. The dealer then informed the contact that the recall repair was performed per the manufacturer's instructions. The contact was later informed by the dealer that the recall repair had not been performed and only the picture of the main power relay part had been sent to the manufacturer. The manufacturer was contacted and informed the contact that they had not received a proof of the service that the dealer had performed on the vehicle. The vehicle was towed back to the independent mechanic, where it was confirmed that the recall repair had not been performed on the vehicle. The mechanic informed the contact that the failure was related to NHTSA Campaign Number: 22V459000 (Hybrid Propulsion System). The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 140,000. Parts distribution disconnect.

NHTSA complaint #11607989 — an unverified report by a vehicle owner.

HYBRID PROPULSION SYSTEM

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated that while driving at various speeds, the vehicle stalled. The contact stated that the failure had been progressing, and the vehicle had become undrivable. The vehicle was taken to a local dealer, where it was diagnosed with a defective battery. The contact related the failure to NHTSA Campaign Number: 18V704000 (Hybrid Propulsion System); however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure; however, no assistance was provided. The failure mileage was approximately 120,000. The VIN was not available.

NHTSA complaint #11606189 — an unverified report by a vehicle owner.

SERVICE BRAKES

Integrated Brake Accuation Unit failed per dealer repair location. Codes indicated on attached repair invoice receipt. (Document is Uploaded). This was a very expensive repair. Per dealer service advisor and technician they had never seen this before. 2 brake lights on the dash indicated major brake failure. The vehicle was immediately taken to the dealer for repair. See additional details regarding concern, cause. correction, and parts replaced on invoice. If this had not been repaired immediately, this could have put others at risk and caused an accident. Although there are several internet references to brake problems with this model of Hundai Ioniq Hybrid, there are no recalls. The powertrain and engine are warrantied for 100K miles and the batteries have an original lifetime owner warranty. Due to the critical nature of a braking system, I believe braking systems on hybrids for this part should have a lifetime warranty. I want to make it clear that parts that wear out due to use for example brake pads, rotors, master cylinder etc. are not what I am referencing. Since the integrated brake accuation unit is a part commonly seen on hybrid products, I think this a part that warrants investigation and recall. This investigation may go beyond the Hyndai hybrid products. Due to the expense of the repair, I believe this repair could put the owners of all hybrid auto products at risk.

NHTSA complaint #11554721 — an unverified report by a vehicle owner.