Description
2017 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 2017 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
Nathan Bates –
I bought the 2017 Mercedes S550 ECM and was impressed with how quickly it arrived. The unit was fully programmed to my VIN and was truly plug-and-play, which made installation straightforward. Their communication was excellent throughout the process, and this service saved me a ton compared to dealer pricing. Overall, a smooth experience from start to finish.
Jason Campbell –
Got my ECU quickly with free shipping and it fit perfectly into my S550—super smooth plug-and-play experience. Excellent communication throughout the process, highly recommend!
Austin Bates –
I was a bit nervous about ordering an ECM online, but this 2017 Mercedes S550 unit arrived surprisingly fast and worked flawlessly right out of the box. The plug-and-play setup made installation a breeze, and I didn’t have to waste time or money at the dealership. The seller kept in touch throughout the process, which gave me peace of mind that everything was programmed correctly for my VIN. After swapping it in, my car fired up without any issues and has been running smoothly ever since. Definitely saved me hundreds compared to dealer prices, and I’d recommend this service to anyone in a similar situation.
Carlos Anderson –
Fast shipping and the unit was truly plug-and-play—saved me a bundle versus dealer prices. Installation was a breeze thanks to their clear instructions and quick delivery.