Description
2017 Mercedes-Benz S400 3.0L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2017 Mercedes-Benz S400 3.0L 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 Evans –
I’m really impressed with how quickly this ECM arrived—shipping was definitely faster than I expected. The unit fit perfectly and was truly plug-and-play, making installation a breeze even though I’m not a professional. Choosing this option saved me a huge amount compared to the dealer repair, and the seller’s communication throughout the process was clear and helpful. Overall, a smooth experience that got my S400 running like new again.
Adam Lopez –
Got my 2017 S400 ECU programmed and ready to install—super fast turnaround and flawless plug-and-play setup. Shipping was free, which was a great bonus!
Samuel Perez –
Fast shipping and the plug-and-play ECU fit perfectly in my 2017 S400, saving me a fortune compared to dealer prices. Communication was clear and the whole process was hassle-free.