CGDI A2 Mercedes-Benz IMMO Manual: Add Key & All Keys Lost

 The CGDI A2 is the next-generation professional key programming tool designed for efficiency and precision. This guide covers the core Mercedes-Benz Anti-Theft License functions, hardware requirements, and step-by-step operational workflows.

Supported Functions

Compared to CGDI MB, the CGDI A2 currently focuses on five essential pillars:

1. EIS (Lockhead) Reading/Writing
2. Password Calculation
3. Key Reading/Writing
4. Key File Generation
5. Wiring Diagrams

Note: Functions such as ELV Synchronization, reading brand new BGA keys, CGPKE key upgrades, and frequency switching are currently not supported in the initial version.

Required Hardware & Accessories

To perform these operations, ensure you have the following components:

• Main Unit: CGDI A2 Host
• Cables: OBD cable (with yellow clip) and Mini-USB data cable
• Adapters: BBA Adapter, Mercedes-Benz Simulator Key, and AC Fast Accumulator
• Wiring Harness: Standard AC harness (compatible with CGMB)

• Core Operational Procedures
• Reading/Writing EIS (via OBD)

Connect the CGDI A2 Key Programmer directly to the vehicle’s OBD port using the OBD cable.

Key Reading & Writing

• Connect the CGDI A2 to the BBA Adapter via USB cable.
• Insert the key into the BBA Adapter keyhole to begin the read/write process.

Password Calculation (Add Key)

Used when at least one working key is available.

1. Connect the device to the EIS via OBD cable.
2. Connect the BBA Adapter to the host via USB.
3. Insert the working key into the BBA Adapter.
4. Navigate to: Password Calculation -> Data Collection -> Add Key.

All Keys Lost (AKL) Procedures

Standard Mode:
Setup Requirements: Connect Host to EIS (OBD) + BBA Adapter (USB) + Simulator Key.
Software Path: Password Calc -> Data Collection -> AKL -> Auto Identify -> Standard Mode.

Fast Mode:
Setup Requirements: Connect Host to EIS (OBD) + BBA Adapter (USB) + Simulator Key + AC Fast Adapter.
Software Path: Password Calc -> Data Collection -> AKL -> Auto Identify -> Fast Mode.

Summary for Professionals

The CGDI A2 streamlines the Mercedes-Benz programming workflow by integrating a user-friendly interface with robust hardware. For "All Keys Lost" scenarios, utilizing the AC Fast Accumulator is highly recommended to significantly reduce data collection time.

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