Description
2011 Mercedes-Benz E550 5.5L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Mercedes-Benz E550 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: Local: 647-247-8555 | Toll-Free: 1-800-915-5566



Hunter Campbell –
I was impressed with how smoothly the entire process went when ordering this ECM for my 2011 Mercedes E550. The unit arrived quickly, and the best part was that it came VIN programmed, so installation was nearly plug-and-play. The shipping was very reasonable, which was a nice bonus considering how specialized this part is. The seller also kept me updated every step of the way, answering my questions promptly and clearly. After installing it, my car runs like new again—definitely recommend their service for anyone needing an ECM replacement.
Oliver Chapman –
The shipping was lightning fast, installation was plug-and-play, and this ECM saved me a bundle versus dealer prices. Great communication and super smooth process from start to finish.
Dylan Willis –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2011 E550—couldn’t be happier with the service.
Carlos Russell –
I was a bit nervous about ordering an ECM online, but this 2011 Mercedes E550 unit arrived quickly and exactly as described. The best part was how smoothly the plug-and-play setup worked—no complicated programming needed on my end. The seller kept me updated throughout the entire process, which made me feel confident in my purchase. After installation, my car has been running flawlessly, and I’m really impressed with the quality of this updated ECU. Definitely recommend to anyone needing a reliable replacement without the hassle.
Matthew Palmer –
I’m really impressed with this ECM for my 2011 Mercedes E550. The shipping arrived super fast, and the unit was truly plug-and-play, making installation straightforward without any headaches. The updated VIN programming worked perfectly, and the whole process saved me a substantial amount compared to dealer prices. The seller’s communication was clear, which made the entire experience hassle-free.
Robert Gray –
I recently purchased the 2011 Mercedes E550 5.5L AT gas ECM/ECU with VIN programming, and I couldn’t be happier with how everything turned out. The shipping was incredibly speedy, which was a relief since I needed my car back on the road quickly. The unit was genuinely plug-and-play, making the installation process smooth and hassle-free—even for someone like me who isn’t very mechanically inclined. The communication from the seller was professional and clear, answering all my questions promptly. Best of all, this option saved me a ton compared to the dealer’s prices, proving to be a smart choice both financially and practically.
Austin Phillips –
I purchased the 2011 Mercedes E550 ECM and was very impressed with how smoothly everything went. The unit came VIN programmed and ready to install, making it a true plug-and-play experience. Shipping was quicker than I expected and very affordable, which was a bonus. Their team also stayed in touch throughout the process, answering my questions promptly and professionally.