EasyChecker — Smart Key Slot Tester for EZS (Electronic Ignition Switch) Key benefits Fast, reliable diagnosis: verifies whether a smart key and the EZS (electronic ignition switch) communicate correctly in seconds. Reduces unnecessary work: a single visual test identifies if the problem is the key/EZS or elsewhere, saving time and parts. Easy to use: no programming, wiring, or disassembly required — place and read an LED status. What it does (function) Designed for Smart Key slotkey systems. Place the EasyChecker directly onto the EZS housing and insert the smart key into the slot. The builtin LED provides an immediate pass/fail indication: if the light turns on and does not go off, the EZS and key are working correctly. Compatibility Intended for vehicles that use a Smart Key in a slot and an EZS (electronic ignition switch) system. Works as a focused diagnostic for the keytoEZS interface (confirming communication and power/recognition). Performance and form Instant visual feedback via LED for quick decisionmaking. Compact, portable tester that can be used at the bench, in the workshop, or on the vehicle. Designed for repeated use in diagnostic workflows. How to use (simple steps) 1. Position the EasyChecker directly on the vehicle's EZS. 2. Insert the Smart Key into the EZS slot. 3. Observe the LED: if the light turns on and remains on, the EZS and key are functioning correctly. Practical use scenarios Automotive workshop: quickly determine whether a nostart condition is caused by a faulty key or a failed EZS before ordering parts. Locksmith or key programming service: confirm a newly cut or programmed smart key is recognized by the car's EZS before returning the vehicle to the customer. Roadside or mobile technician: perform a fast onsite check to rule out the key/EZS pair when diagnosing immobilizer or recognition faults. Why professionals choose EasyChecker Direct, noninvasive test of the keytoEZS interface. Reduces diagnostic time and unnecessary component replacement. Clear pass/fail result minimizes guesswork and supports confident decisions.