Description
2009 Mercedes-Benz ML550 5.5L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 Mercedes-Benz ML550 5.5L AT gas models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: 647-247-8555




Max Smith –
Shipping was super quick and the ECU was truly plug-and-play. This saved me a bundle compared to dealer prices and the whole process was hassle-free.
Tyler Nelson –
Arrived quickly with free shipping, and the ECU was perfectly programmed for my ML550—couldn’t ask for a smoother swap.
Dylan Harrison –
I was really impressed with how quickly the 2009 Mercedes ML550 ECM arrived—it was shipped faster than I expected. Installation was straightforward since the unit came fully programmed and was truly plug-and-play. Choosing this option saved me a significant amount compared to the dealer’s price, and their team was very responsive when I had questions. Overall, it was a smooth process from start to finish.