Check the listing for details. IMMOBILIZER CAR KEY ANTENA COIL TESTER TOOL (2)PCS. Condition: New. Listed at 15.00 USD. Description: Supply of automotive ECU detection coil. It applies to all cars tested with the use of [security] chip induction coil. As long as the line trap on the ignition switch, turn on [to try]. LED lights up on the coil it shows normal vehicle. If the lamp is not lit access road that is described [ECU] computer is not working properly. With this simple detection coil without people in high-end equipment can be / * / quickest way to test the operation of the vehicle Yeah. Photographed two kinds to choose from. The new ECU test card, without any instrument, convenient test ECU [access road] cartridge is good or bad. for Mercedes-Benz / BMW / Audi / VW and other vehicles can not start with a chip tester can quickly diagnose B-e-n-z EIS / B-M-W CAS / A-u-d-i EZS / public EZS lock coil does not start is not reading the question, 10 seconds good or bad rapid diagnosis within. Package Includes: 2 Piece Car Key Immobilizer antena coil Tester Tool