Siemens SIM266

New AT Protocol!

Dear Users,

A practical and highly efficient update is joining your AutoTuner Tool! We are pleased to announce support for the Siemens SIM266 ECU, equipped in Mercedes-Benz compact petrol models.

This protocol allows you to work on the highly popular A-Class and B-Class, from the 150 engine up to the punchy 200 TURBO version.

⚡ Method: 100% OBD (Virtual Read - VR) Save valuable time during your tuning jobs! Thanks to the Virtual Read method, your tool identifies the ECU and instantly downloads the original file from our servers. Plug in, download, and jump straight into modifying.

Supported Vehicles & Engines:

• Mercedes A-Class (1997 - 2004): 150, 160, 170, 180, 200, 200 TURBO
• Mercedes B-Class (2005 - 2011): 150, 160, 170, 180, 200, 200 TURBO

Expand your business on these popular daily drivers, perfect for standard optimizations and FlexFuel (E85) conversions!

The AT Team

Key Features

• Type: Engine Control Unit (ECU) ⚙️
• Mode: OBD VR 🔌
• Readout: Calibration 🧩
• MCU: MPC561 🖥️
• Write time: 1min 30sec ⏱️
• Checksums correction ✅

Compatibility List*

🚗 Mercedes Models: A (1997 - 2004) / B (2005 - 2011)
🔧 Mercedes Engines: 150 / 160 / 170 / 180 / 200 / 200 TURBO

*The list may evolve over time.