The contact owns a 2019 Volkswagen Tiguan. The contact stated that while his daughter was driving in extremely hot weather, the fault code message stating that the ignition was switched off, check the starter system, and to please pull over to the side of the road was displayed, while emitting a beeping sound to alarm the driver. The electrical systems, excluding the engine, became disabled. The contact stated that the headlights, taillights, instrument panel, and several other electrical functions were inoperable. The driver coasted to the side of the road and waited until the engine had cooled off before continuing to drive. The failure occurred consistently, in approximately 2 to 3 minutes, causing the driver to repeat the actions for the vehicle to operate as needed. The vehicle was taken to the dealer who was unable to determine the cause of the failure. The code starter fault error message was displayed; however, the dealer did not believe the failure was related to NHTSA Campaign Number: 23V60400 (Electrical System); however, the VIN was not included in the recall. The contact stated that the Part Number: 521905865; for the ignition switch, was the same and believed that the failure was related to the recall. The dealer was unable to duplicate the failure because the temperature was not 90 degrees or higher. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 74,103.