Failure to illuminate the brake lights or disengage cruise control could increase the risk of a crash, while disabling the brake-transmission interlock could result in the vehicle rolling away, it added.

BBC: Hyundai and Kia in US car recalls

"Additionally, a malfunctioning stop lamp switch may also result in intermittent operation of the push-button start feature, affect the operation of the brake-transmission shift interlock feature, preventing the shifter from being moved out of the park position and cause the Electronic Stability Control (ESC) malfunction light to illuminate, " stated NHTSA documents.

BBC: Hyundai and Kia in US car recalls