2021 Hyundai Nexo problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (2) · Power Train (1) · Fuel System, Other (1)
Safety recalls (2)
Fuel/Propulsion System 2024-10-11 · campaign 24V761000 · 1,545 vehicles ⚠ PARK OUTSIDE
Defect: Hyundai Motor America (Hyundai) is recalling certain 2019-2024 Nexo vehicles. The thermally activated pressure relief device (TPRD) may break and cause a hydrogen gas leak, which can result in a fire while parked.
Risk: A vehicle fire increases the risk of injury.
Fix: Owners are advised to park outside and away from structures until the recall remedy is completed. Dealers will replace the TPRD, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 8, 2024. Final owner notification letters will be mailed in phases, beginning January 6, 2025. Owners may contact Hyundai Customer Service at 800-633-5151. Hyundai's number for this recall is 269.
Electrical System:propulsion System:fuel Cell 2022-04-14 · campaign 22V258000 · 922 vehicles ⚠ PARK OUTSIDE
Defect: Hyundai Motor America (Hyundai) is recalling certain 2019-2021 Nexo vehicles. The hydrogen gas detection sensors may fail to detect leaks in the hydrogen gas delivery system.
Risk: A hydrogen gas leak can increase the risk of a fire while parked or driving.
Fix: Owners are advised to park their vehicles outside and away from structures until the recall remedy is completed. Dealers will replace the hydrogen gas detection sensors, free of charge. Owner notification letters were mailed August 12, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 225.
Service bulletins (17)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Back Over Prevention: Warnings 2026-10-15 · 26-GI-004H · Service Bulletin/Repair Instructions
some hyundai vehicles may be equipped with a parking distance warning (pdw) sensor(s) that may trigger various dtcs and display warning messages on the instrument cluster, resulting in the pdw sensor(s) failing to detect nearby objects or triggering multiple false alarms. this condition may be a res
Air Bags 2026-04-10 · DTN DL · Other
the national highway traffic safety administration (nhtsa) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by jilin province detiannuo automobile safety system co., ltd. (dtn). these inflators were not supplied, approved, or authorized by the vehi
Air Bags 2026-04-10 · DTN DCS · Other
the national highway traffic safety administration (nhtsa) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by jilin province detiannuo automobile safety system co., ltd. (dtn), that have been identified in u.s. vehicles following prior
Exterior Lighting 2025-11-06 · 25-BD-012H TSB · Service Bulletin/Repair Instructions
this bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (drl), or fog lamp. this tsb illustrates the various causes of condensation inside the lamp assembly. lamp assembly replacement is not necessary
Electrical System 2025-05-08 · 25-01-024H-1 TSB · Service Campaign
some vehicles may exhibit a loss of connectivity or interruptions in the middle of using bluelink service functions. this may be due to an irregular disconnection on verizon’s communication network. follow the procedure in this tsb to reestablish the connection via the avn pinhole reset method.
Electrical System 2025-04-07 · 25-01-024H EM · Service Campaign
some vehicles may exhibit a loss of connectivity or interruptions in the middle of using bluelink service functions. this may be due to an irregular disconnection on verizon's communication network. if you are experiencing issues with remote commands, or other bluelink services, please see the inst
Showing the 6 most recent of 17 bulletins. Search all of them free at nhtsa.gov.
What owners report
2024-06-21 · Fuel/Propulsion System“hydrogen fuel cell system is unstable/unreliable. vehicle fueling infrastructure is completely unreliable and cannot be depended on for safe, ongoing operation of vehicle.…”
2024-04-20 · Power Train“it has become more frequent for there to be a delay in acceleration of about 3 to 4 seconds when traveling uphill. my car lost acceleration while going uphill. as i was gradually accelerating from a red traffic light to climb a hill, my car became stuck at a certain speed, around 50 mph on april 3rd. even when pressing the acceleration pedal to t…”
2022-11-20 · Fuel/Propulsion System“catastrophic issue awaiting to happen. i am fearful the car can blow up. hydrogen gas leak has been detected since march 2022. after and during the pumping, often there would be a loud hissing sound coming from the vehicle no from the pump itself. after fueling with hydrogen gas, it takes a minute for the car to read and update the tank. the…”
2022-08-11 · Fuel System, Other“ the contact owns a 2021 hyundai nexo. the contact received notification of nhtsa campaign number: 22v258000 (fuel system, other, electrical system) however, the part to do the recall repair was not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. the dealer was made aware of th…”
2022-07-14 · Forward Collision Avoidance: Automatic Emergency Braking“the car does not automatically brake to avoid collision. i have tested the car by going straight into a large object either another car or person in front of my car and it will not brake. in addition the hydrogen sensor is not working properly as i have already been informed of from their recall number 225 nhtsa recall 22v-258 which i just received…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.