The contact owns a 2018 Jeep Grand Cherokee. The contact stated that while driving at 10 MPH, the wheels locked up. The contact was unable to identify which wheels had locked up. The vehicle began spinning in circles, and the vehicle crashed into a guardrail. The ABS warning light was illuminated. The contact was able to continue to drive; the driver sustained injuries to the head and lower back, and medical attention was provided. The air bags did not deploy. There was no reported fire or police report filed. The contact received notification of NHTSA Campaign Number: 24V838000 (Service Brakes, Hydraulic); however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. VIN tool confirms parts not available. The approximate failure mileage was 98,000.