Hyundai Motor America is recalling certain 2021-2023 Elantra HEV vehicles

Aug 18, 2023 — Recall Campaign #23V589000

Hyundai Motor America (Hyundai) is recalling certain 2021-2023 Elantra HEV vehicles. A software error in the motor control unit may cause unintended vehicle acceleration after the brake pedal is released.

The recall was influenced by the Office of Defects Investigation with about 37,997 units affected.

See recall notice

NHTSA Safety Recall Notice

23V589000

Manufacturer:	Hyundai Motor America
Recall date:	August 18, 2023
NHTSA Campaign #:	23V589000
Units affected:	37,997

Description:: Hyundai Motor America (Hyundai) is recalling certain 2021-2023 Elantra HEV vehicles. A software error in the motor control unit may cause unintended vehicle acceleration after the brake pedal is released.
Consequeces:: Unintended vehicle acceleration can increase the risk of a crash.
Corrective action:: Dealers will update the motor control unit software, free of charge. Owner notification letters were mailed September 29, 2023. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 248.
Notes:: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Affects the following:

2021-2023 HYUNDAI ELANTRA HYBRID

2023 HYUNDAI ELANTRA HYBRID Complaints
I am the original owner of a 2023 Hyundai Elantra Hybrid Limited. At approximately 114,719 miles, the vehicle began exhibiting intermittent shaking, rumbling, swaying, wobbling, and lateral instability. The condition is most noticeable at highway speeds and after bumps or other road disturbances, although it has also occurred at lower speeds. At times, the vehicle continues swaying after the initial disturbance has passed. Wind or passing vehicles may amplify the movement, but it also occurs without those factors. Both front lower control arms were replaced. Both front struts were later found bent and replaced. The vehicle has undergone multiple inspections, alignments, balancing attempts, adjustments, and road tests without a satisfactory diagnosis or lasting correction. Rear-suspension concerns included uneven appearance, a rear coil spring that appeared incorrectly oriented, and replacement of the rear-driver strut. The vehicle has also been operated with three Goodyear Reliant 91V tires and one Arroyo 94Y XL tire. The dealership documented differences in sidewall construction and measured circumference between the mismatched tire and the other three. The vehicle was returned with unequal tire pressures, which I documented and corrected to the specified cold pressure of 32 PSI. I gave the dealership descriptions of the driving conditions and multiple suggested diagnostic routes and testing options. I authorized extended road testing, including a technician taking the vehicle home. The dealership adjusted steer-ahead and reset the steering-angle system, but returned the vehicle without identifying the cause of the instability. Immediately after pickup and during subsequent driving to work, daycare, and home, the rumble and occasional sway remained, although less severe. On August 17, 2026, at approximately 120,630 miles, the rumble and intermittent sway remained present. I also noticed an intermittent light metallic rattle and possible passenger-side hum;