Description
2009 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 2009 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
Mark Reed –
I recently purchased the 2009 Mercedes S550 ECM from this seller and I couldn’t be happier with the experience. The unit arrived quickly, and it was truly plug-and-play, which made the installation process smooth and hassle-free. I was initially worried about the cost of replacing my car’s ECU at the dealer, but this option saved me a significant amount of money without sacrificing quality. The communication from the seller was clear and professional, answering all my questions promptly. Overall, this service made what could have been a stressful repair much easier and affordable.
Isaac Gray –
Fast shipping and the plug-and-play unit worked perfectly in my 2009 S550. This saved me a bundle compared to dealer prices and the whole process was hassle-free.
Jose Smith –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2009 S550—installed easily with no issues.
Shane Murphy –
I was really impressed with how quickly the 2009 Mercedes S550 ECM arrived—shipping was faster than I expected. The unit was fully programmed to my VIN and was completely plug-and-play, making the installation straightforward and hassle-free. Compared to dealer prices, this service saved me a significant amount of money, and the seller’s communication throughout the process was clear and professional. Overall, a smooth experience from start to finish.
Gavin Scott –
I was a bit nervous about buying a replacement ECM for my 2009 Mercedes S550, but this unit arrived exactly as described and was VIN programmed, so it fit perfectly without any hassle. The best part was how smoothly the plug-and-play setup went—I literally just swapped it in and everything fired up right away. The shipping was surprisingly fast and reasonably priced, which helped keep the whole repair budget in check. Throughout the process, the seller stayed in touch and answered all my questions promptly, which gave me a lot of confidence. Overall, I’m really happy with the quality and service and would definitely recommend this to anyone needing an ECM replacement.
Eric King –
I purchased the 2009 Mercedes S550 ECM and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. Their team programmed the ECU specifically for my VIN, so the installation was completely plug-and-play. Communication was excellent throughout the process, and they responded promptly whenever I had questions.