New AT Protocol!
Dear Users,
The market for latest-generation everyday drivers is expanding! We are thrilled to announce that the state-of-the-art Bosch MG1CS701 (MRG5) and Bosch MG1CP777 (MRG4) ECUs are now officially supported on your AutoTuner Tool.
💡 Why these new ECUs from Mercedes? To fit highly demanding modern efficiency standards, Mercedes-Benz heavily updated its popular compact lineup (A-Class, B-Class, CLA, GLA, GLB). The well-known 1.3T and 2.0T powerplants transitioned into Mild-Hybrid (MHEV) and Plug-in Hybrid (PHEV) systems. This technological shift required the factory introduction of these all-new ECU platforms (MRG4 & MRG5), packed with sophisticated security layers.
With this release, you now hold the perfect tuning solution to optimize the performance and fuel efficiency of these high-volume vehicles!
🔒 Advanced Workflow (Mail-in ➡️ Bench):
Mail-in Unlock: The ECU must first be sent to our headquarters for a secure hardware unlock by our engineering team.
Bench: Once returned to your workshop, software restrictions are removed. You gain total Bench access to safely read and write your calibrations directly on your workbench—no ECU opening required.
Fleet Coverage Highlights (1.3T & 2.0T MHEV / PHEV Engines):
1.3T Range (Bosch MG1CS701 - MRG5): Mercedes A-Class, B-Class, CLA, GLA, GLB (180 MHEV, 200 MHEV & 250e PHEV configurations).
2.0T Range (Bosch MG1CP777 - MRG4): Mercedes A-Class, CLA, GLA, GLB (220 MHEV, 250 MHEV, and the performance-driven 35 AMG MHEV).
Specific to the USA:
✅ 2024+ CLA250 / CLA35 AMG
✅ 2024+ GLA250 / GLA35 AMG
✅ 2024+ GLB250 / GLB35 AMG
Update your software today and stay ahead of the game in modern electrified Mercedes tuning!
The AT Team
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👉 Unlock for Mercedes MDG1/4/5
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👉 Reusable ECU shipping case |
Key Features
- Type: Engine Control Unit (ECU) ⚙️
- Mode: BENCH NR 🔌
- MCU: TC387 🖥️
- Read time: 2min ⏱️
- Write time: 1min ⏱️
- Checksums correction ✅
- Backup creation 🔄
- Mail-in unlock needed 📦
Compatibility List*
🚗 Mercedes Models: A (2018) / B (2019) / CLA (2019) / GLA (2020) / GLB (2019)
🔧 Mercedes Engines: 180 MHEV / 200 MHEV / 220 MHEV / 250 MHEV / 250e PHEV / 35 AMG MHEV
*The list may evolve over time.
