Description
2014 Mercedes-Benz S550 4.7L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 Mercedes-Benz S550 4.7L 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



Cole Ward –
I purchased the 2014 Mercedes S550 4.7L AT ECM and was impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. The ECU was already VIN programmed, so installation was truly plug-and-play and saved me a lot of time. Communication from the seller was clear and prompt, making the whole process stress-free.
Jose Anderson –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was truly plug-and-play, making installation straightforward without any complicated programming on my end. Choosing this option instead of going through the dealer saved me a significant amount of money. The seller was also very responsive and professional throughout the process, which made the whole experience stress-free.
Liam Watson –
The ECU arrived quickly with free shipping and was fully programmed for my 2014 S550, making installation a breeze. Communication was top-notch throughout the process.
Leo Willis –
Fast shipping and a plug-and-play unit made this a no-brainer—saved me a bundle versus dealer prices with professional service all the way. Installation was smooth and communication top-notch.