CB026 - FBS4/FBS3 ELV Connection CableCB026 FBS4 FBS3 ELV Connection Cable The CB026 ELV Connection cable is developed to establish a connection between AVDI and FBS3 FBS4 Mercedes Benz vehicles equipped with an ELV. The CB026 can be used while working on bench or in the vehicle. It is an essential part of the ESL ELV Repair procedure, performed using the MN033 license. The cable is also used for procedures with the MN032 license. AVDI and active AMS are required. FBS3 FBS4 Mercedes Benz