Description
2015 Mercedes-Benz S550 5.5L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2015 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: 647-247-8555
Connor Young –
I purchased the 2015 Mercedes S550 ECM for my car, and the whole process was smooth and hassle-free. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me most was how well the ECU was VIN programmed and ready to go right out of the box—no complicated setup required. Their team also responded promptly when I had questions, making the experience very reassuring.
Dean Mitchell –
I was a bit nervous ordering an ECM online for my 2015 Mercedes S550, but this purchase exceeded my expectations. The unit arrived quickly with free shipping, which was a nice surprise. What impressed me the most was the plug-and-play setup—they had it VIN programmed and ready to go right out of the box. Installation was straightforward, and my car runs flawlessly now. Customer support was responsive and answered my questions promptly, making the whole experience very smooth. Overall, I’m really happy with the quality and service.
Chris Rogers –
The ECU arrived quickly with free shipping and worked perfectly right out of the box—super smooth plug-and-play experience.
I had a few questions before buying, and their customer service was incredibly responsive, making the whole ECU swap hassle-free.
Great quality ECU for my 2015 S550, plus they handled all the programming professionally so I didn’t have to worry about a thing.
Fast turnaround and excellent communication throughout the process—my car is running flawlessly now.
Very reasonable shipping and top-notch repair quality; this was exactly what my Mercedes needed to run like new again.
Owen Watson –
Fast shipping and a true plug-and-play ECM—saved me a bundle over dealer prices. Installation was a breeze and the team kept me in the loop the whole time.
Blake Turner –
I was really impressed with how smoothly everything went when I ordered the VIN programmed ECM for my 2015 Mercedes S550. The team provided a professional plug-and-play setup that made installation hassle-free, and the unit worked perfectly right out of the box. Shipping was surprisingly quick and very reasonably priced, which was a nice bonus. Throughout the process, they kept me informed and answered all my questions promptly, which helped ease my worries. I can confidently say this was a great investment to get my car running like new again.
James Turner –
I was really impressed with the quick shipping and how the ECM arrived ready to install with no hassle. The plug-and-play setup made swapping out the old unit straightforward, and it saved me a huge amount compared to the dealer’s prices. The communication was clear throughout the process, making me feel confident about the purchase. Overall, a smooth experience from start to finish.