Description
2011 Mercedes-Benz SL550 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 SL550 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



Blake Burton –
I was a bit nervous ordering an ECM for my 2011 Mercedes SL550, but this purchase exceeded my expectations. The VIN programmed unit arrived quickly, and the shipping cost was very reasonable, which was a nice bonus. Installation was straightforward thanks to the plug-and-play setup they provided. I also appreciated the seller’s prompt responses to my questions before buying. My car is running smoothly now, and I couldn’t be happier with the quality and service.
Andrew Edwards –
Shipping was super fast and the ECU was truly plug-and-play. This saved me a bundle compared to dealer prices and the whole process was hassle-free.
Liam Sanders –
I was really impressed with how quickly the ECU arrived after ordering, and it was literally plug-and-play with no issues at all. The VIN programming was spot on, which made installation straightforward and hassle-free. Compared to dealer prices, this service saved me a ton of money, and their communication throughout the process was professional and clear. Overall, a smooth experience that I highly recommend for anyone needing an ECM for their 2011 SL550.
Luke Lewis –
I purchased the 2011 Mercedes SL550 ECM and was really impressed by how smoothly everything went. The unit arrived with free shipping, which was a nice bonus, and their team provided professional programming so it was truly plug-and-play. They answered my questions promptly and kept me informed throughout the process. The ECM works perfectly, and I’m very satisfied with the quality and service.
Chase Roberts –
The ECU arrived quickly with free shipping, and the plug-and-play setup was flawless—my SL550 runs like new again.
Nicholas Payne –
I was really impressed with how quickly this ECM arrived after I placed my order. Installation was surprisingly easy since the unit was already VIN programmed and truly plug-and-play, which saved me from dealing with complicated setups. The communication from the seller was clear and professional, answering all my questions promptly. Choosing this option saved me a hefty amount compared to going through the dealership, which was a relief. My SL550 runs perfectly now, and I couldn’t be happier with the smooth process from start to finish.
Caleb Bates –
I was really impressed with how smooth the whole process was for the 2011 Mercedes SL550 ECM. The unit arrived quickly, and the shipping cost was surprisingly reasonable compared to other places I checked. What stood out most was their professional programming service—the ECU came fully VIN programmed and ready to install, which saved me a ton of time and hassle. Throughout the purchase, the seller kept me updated on the status, which gave me peace of mind. After installation, my SL550 runs flawlessly again. Definitely a reliable source if you need a quality ECM.