What the source says
The documented condition
NHTSA campaign 21V944000 includes certain 2017 to 2019 Hyundai Ioniq vehicles. Hyundai Motor America (Hyundai) is recalling certain 2017-2019 Ioniq electric vehicles. An unstable electrical ground may cause the vehicle to enter a fail-safe mode with reduced acceleration and power. Unexpected acceleration following gas pedal release can increase the risk of a crash.
Source component: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM)
Compare the pattern
Symptoms and vehicle scope
Words owners may use
- dashboard lit up with warnings
- car electronics stopped working
- screen keeps rebooting
- car will not start after update
- electrical problem with no warning
- software recall
Symptoms in the record
- Warning messages, a blank display, a no-start condition or loss of a vehicle function may occur
- An open campaign appears when the complete VIN is checked
- Some recalled vehicles may show no advance warning before the component fails
Vehicles and limits
- 2017 to 2019 Hyundai Ioniq
- NHTSA campaign 21V944000
- The manufacturer filing lists 2,679 potentially affected units across the complete campaign.
- VIN eligibility determines whether this recall applies to an individual vehicle
Manufacturer position
What the official procedure directs
Dealers will update the EPCU (Electric Power Control Unit) software and repair the ground wiring, free of charge. Owner notification letters were mailed February 9, 2022. Owners may contact Hyundai customer service at 1-855-371-9460.
Mileage context
Safety recall eligibility is based on the VIN and campaign scope, not ordinary warranty mileage. Check the complete VIN even when the vehicle is outside its original warranty.
Original evidence
Open the documents behind this record.
NHTSA safety recall · 21V944000 · Dec 7, 2021
Official campaign record for Hyundai Ioniq
NHTSA campaign data lists the defect, safety consequence and manufacturer remedy. The manufacturer filing lists 2,679 potentially affected units across the complete campaign.
Repair paths and safe checks
Match the action to the evidence.
Use the official recall remedy
Dealers will update the EPCU (Electric Power Control Unit) software and repair the ground wiring, free of charge. Owner notification letters were mailed February 9, 2022. Owners may contact Hyundai customer service at 1-855-371-9460.
Do not buy parts from the campaign description alone. VIN scope, superseded remedies and parts availability can change.
Check the complete VIN before arranging work
Enter the 17-character VIN in NHTSA's recall lookup and ask the manufacturer or an authorised dealer to confirm whether the campaign is open for this vehicle.
A year, make and model match does not prove that every vehicle is included. The VIN result controls eligibility.
Record reviewed in the source on August 3, 2026. Confirm the current document and VIN instructions before arranging work.
How we check a problem · All records for the 2017 Hyundai Ioniq