Car Checker Immobiliser System Coil EZS EIS CAS Tool for BMW Benz Tester

Put Easy-Checker directly on the EZS and insert key in. Put Easy-Chcker on the EIS, put your IR key into EIS. Light on and not off, then EZS and key ok. Light on then off, then EZS ok,key not ok. Light on and not off, then EIS and key all ok.