The EGR RollTrac integrates with your vehicle's central locking. When the tailgate is closed and the EGR RollTrac is locked, the EGR RollTrac locks into the vehicle's tailgate, securing your load area.** Note** The EGR Rolltrac electric for Nissan Navara, Mercedes Benz X-Class and Jeep Gladiator the tailgate rail has been removed and the EGR RollTrac does not lock to the tailgate