Zed-FULL | External Antenna ZFHC-EA | For VAG OBD Applications – 7th Byte CS Calculation

ZED-FULL | External Antenna ZFHC-EA | 7th Byte CS Calculation for VAG OBD

Product Description

The ZED-FULL ZFHC-EA external antenna is designed for VAG OBD applications requiring the calculation of the 7th byte of the CS (Component Security) code.
It also enables testing of the immobilizer coil to verify its correct operation during diagnostic and key programming procedures.

This accessory is an official product from IEA (Zed-Full).
It serves as a replacement or an additional unit for the original external antenna included in the standard Zed-Full package — ideal in case of loss or damage to the original cable.

Before use, make sure your Zed-Full or Zed-Full+ device is updated to the latest software version to ensure full compatibility and optimal performance.

Main Functions

• Calculates the 7th byte CS for VAG vehicles via OBD connection

• Quick and reliable immobilizer coil testing

• Compatible with ZEDFULL and ZEDFULL+

• Genuine IEA (Zed-Full) accessory with high precision and reliability

• Designed for professional use in automotive key programming workshops

Technical Specifications

Recommended Use

The ZFHC-EA antenna connects directly to the Zed-Full system for:

• Immobilizer system diagnostics

• Reading and calculation of the CS code

• Functional testing of the induction signal

It is essential for workshops working on modern VAG vehicles that require 7th byte CS calculation.

To ensure the best performance, always check for the latest Zed-Full software update before using the antenna.

Package Contents

• 1 × External Antenna ZFHC-EA

• 1 × Original IEA (Zed-Full) Connection Cable

Distribution and Legal Notice

This product is distributed exclusively by KEYFIRST,
official distributor of IEA | Zed-Full in Europe.

Use of this accessory is strictly limited to authorized professionals with permission to perform vehicle interventions.
This product does not allow bypassing or disabling vehicle electronic security systems.

© ZED-FULL — IEA Intelligent Engineering Automotive Ltd.
All trademarks, names, and logos mentioned are the property of their respective owners.
ZED-FULL™ and ZEDFULL+™ are registered trademarks of IEA Ltd.