Description
2016 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 2016 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
Frank Reynolds –
The VIN programmed ECU arrived quickly with free shipping and worked perfectly right out of the box. Customer support was super responsive when I had a couple of questions.
Patrick Miller –
The 2016 Mercedes S550 ECU arrived quickly and was already VIN programmed, which saved me a lot of hassle. The free shipping was a nice bonus, and the quality of the part feels great—perfect fit and function. They also kept me informed throughout the process, answering my questions promptly. Overall, a smooth and trustworthy experience.
Noah Hamilton –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle compared to dealer prices and the install went smoothly.