Description
2007 Mercedes-Benz S550 5.5L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2007 Mercedes-Benz S550 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



Adrian Murphy –
Great quality ECM, arrived quickly with free shipping, and the plug-and-play setup made installation a breeze.
Andrew Ward –
Super fast shipping and the unit was truly plug-and-play. Saved me a bundle compared to the dealer, and installation was a breeze.
Colin Scott –
I purchased the 2007 Mercedes S550 5.5L AT gas ECM and was really impressed with how smoothly the whole process went. The ECU came VIN programmed, so installation was truly plug-and-play, which saved me a lot of time and hassle. Shipping was free and arrived faster than I expected. Their team also answered all my questions promptly, making the experience worry-free from start to finish.
Noah Mitchell –
I was a bit nervous ordering an ECM for my 2007 Mercedes S550, but this unit arrived faster than expected and was already VIN programmed, which saved me a ton of time. The plug-and-play setup made installation straightforward, and I didn’t have to worry about any complicated coding. The seller kept me updated throughout the process and answered my questions promptly, which gave me a lot of confidence in the purchase. Since installing it, my car runs perfectly, just like new. Definitely recommend if you need a reliable and hassle-free replacement.
Jacob Foster –
I was a bit nervous ordering an ECM online, but this 2007 Mercedes S550 ECU arrived quickly and was already VIN programmed, which made the installation seamless. The team provided excellent communication throughout the process, answering all my questions promptly and keeping me updated on the shipping status. The plug-and-play setup saved me a lot of hassle, and my car is running perfectly now. Shipping was very reasonable too, which was a nice bonus. Overall, a great experience that I would definitely recommend to anyone needing a reliable ECM.