CGDI A2 vs. CGDI MB Benz Key Programmer

CGDI A2 vs. CGDI MB Benz Key Programmer

Both CGDI A2 and CGDI MB are capable of programming keys for Mercedes-Benz vehicles—but they differ significantly in features and versatility.

CGDI A2 Key Programmer

• CGDI A2 is a next-generation, multifunctional tool that combines key programming, frequency detection and Wi-Fi connectivity.

• It supports not only Mercedes-Benz (after you activate the required “Benz license”) but also many other vehicle brands, including:

  • Volkswagen (MQB platform)

  • Mazda CX-30

  • Toyota (8A/4A systems — full smart-card replacement, no physical card needed)

  • Honda (smart-key systems, 2021 and newer)

  • Nissan (28-digit password-free matching)

  • BMW (BDC2 systems from 2016 onward)

• Key advantages: password-free and disassembly-free matching for many models, automatic VIN/chassis-number detection for Benz cars, CAN-FD support for GM cars, and free updates for supported systems.

• Note: To enable Mercedes-Benz functions, you must send your CGDI A2 serial number to customer service for activation — no shipping is needed after activation.

CGDI MB Benz Key Programmer

• CGDI MB is a tool specialized for Mercedes-Benz vehicles and focuses on delivering advanced, Benz-specific key programming functions.

• Supported key-programming functions include: reading/writing keys, generating key files, password calculation, wiring diagrams, and EIS (ignition system) handling.

• Some limitations (as of now): no support yet for ELV synchronization, reading new BGA keys, upgrading CG PKE keys, or switching key frequency for CG keys.

Which to choose?

• Go for CGDI A2 if you work with multiple car brands (not just Mercedes) and want a flexible, all-in-one key-programming device.

• Choose CGDI MB if your work is focused on Mercedes-Benz and you need a tool optimized for the most complete set of Benz-specific key programming capabilities.