The steering coupler failed, causing the tires to turn back and forth (oscillate) while the driver held the steering wheel steady. The vehicle went out of control and spun out on wet pavement. The driver could feel the steering wheel go thunk-thunk-thunk back and forth, as the servomotor for the electric power steering system went out of control. The failed coupler is between the servomotor and the power steering rack. The free play from the defective steering coupler allows the electric power steering system to turn the tires WITHOUT any input from the steering wheel or driver, causing the vehicle to become unstable and spin out. Hyundai has a TSB on this issue [XXX] , but Hyndai says that this issue is a non-safety clunk noise. FALSE. This is a safety issue where the electric power steering system turns the tires (wheels) back and forth WITHOUT driver input. This causes the vehicle to become unstable, almost killing my wife. This IS a NHTSA safety issue, not a noise complaint. Hyundai falsely classified this problem as a noise issue, not a safety issue. This is a known defect that is falsely classified as a non-safety issue, escaping a NHTSA recall notice. This is a safety issue where the steering becomes unstable as the servomotor goes crazy due to the extra play or slop in the failed coupler. The safety issue is unrecoverable on wet or snowy pavement. On dry pavement it is annoying and unstable. This issue is also very dangerous and causes oversteer (spin o