Description
2012 Mercedes-Benz S550 4.7L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz S550 4.7L 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
James Watson –
Great quality ECM, arrived quickly with free shipping and worked perfectly right out of the box. Communication was spot on throughout the process.
Colin Adams –
I ordered the 2012 Mercedes S550 ECM and was impressed by how quickly it arrived with free shipping included. The unit was fully VIN programmed and installed seamlessly—no issues at all. The team kept me informed throughout the process and answered all my questions promptly, making the whole experience smooth and stress-free. Highly recommend for anyone needing a reliable and ready-to-go ECM.
Connor Walker –
I’m really impressed with this ECM for my 2012 Mercedes S550. The unit arrived quickly and was truly plug-and-play, making installation straightforward even for a non-professional. The communication from the seller was excellent, answering all my questions promptly. Choosing this option saved me a significant amount compared to dealer prices, and the whole process was smooth from start to finish.
Sean Rivera –
Fast shipping and a true plug-and-play unit—installation was a breeze and saved me hundreds compared to the dealer. Great communication throughout made the whole process smooth and hassle-free.
Sean Poole –
I was really impressed with how quickly this ECM arrived after I placed my order—shipping was faster than I expected. When I got it, the unit was truly plug-and-play, which made installation smooth and hassle-free. The programming matched my VIN perfectly, so I didn’t have to worry about any compatibility issues. Choosing this over a dealer replacement saved me a significant amount of money, and the team’s communication throughout the process was professional and clear. Overall, this purchase exceeded my expectations and got my S550 running like new again.
Brian Bailey –
I was a bit nervous ordering an ECM online for my 2012 Mercedes S550, but this experience exceeded my expectations. The unit arrived quickly with free shipping, which was a nice bonus. What really stood out was the plug-and-play programming—once installed, everything synced perfectly with my car’s VIN and I was back on the road without any hiccups. The seller also responded promptly when I had questions about the installation process. Overall, the quality of the ECM and the smooth transaction made this a stress-free repair.