When Benz/BMW/Audi/VW car can not start, Easy-Checker can find out it is Benz EIS/BMW CAS/Audi EZS/VW EZS lock or key issue, good or bad rapid diagnosis within 10 seconds. EASY-CHECKER intelligent operation, no need connected to the computer, Easy-checker is the first in the world. Meanwhile EASY-CHECKER is the best automotive repair products.
Easy Checker Easy-Checker Immobiliser System Fast Tester
Support car model:
Support for all models Mercedes-Benz 1998-2010; Support all models of BMW 1995-2010; Support the Audi / VW new smart key.
How to use Easy-Checker?
Benz car model:
Put Easy-Chcker on the EIS, put your IR key into EIS.
Light on and not off, then EIS and key all ok
Light on then off, then EIS ok, key not ok
Light on and not off but car still can not start, please check ESL Steering wheel lock and Key whether ok.
Light not on, then EIS not ok.
BMW Car model:
EWS system:
Put Easy-Checker on EWS(no need insert key)
Light on means EWS ok(can used on: E46/E39/E53)
Insert Easy-Checker into EWS(insert key in)
Light on not off, then Key and EWS all ok
Light on then off, then EWS ok, key not ok
Light on and not off, but car still not start, please check whether key is ok
CAS System( for 1 series/3 series/ 5 series/7 series)
Put Easy-Checker directly on CAS and insert key in
Light on and not off, then CAS and key all ok
Liht on then off, then CAS OK but key not ok
VW/Audi Car model:
Smart Key slot-key
Put Easy-Checker directly on the EZS and insert key in
Light on and not off, then EZS and key ok
Light on then off, then EZS ok, key not ok
Package including:
1PC X Easy-Checker
Audited Supplier 
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