Description
2012 Mercedes-Benz E550 4.7L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz E550 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



Bruce Cox –
I was really impressed with the quality of this ECM for my 2012 Mercedes E550. The unit arrived quickly and the free shipping was a nice bonus. What stood out the most was how smoothly the VIN programming was handled – it was practically plug-and-play, which made installation a breeze. The car runs perfectly now, and I didn’t have to worry about any complicated setups. Definitely a reliable product and a hassle-free experience.
Luke Cook –
I was a bit nervous ordering an ECM for my 2012 Mercedes E550, but the whole process went smoother than I expected. The VIN programmed unit arrived quickly, and the plug-and-play setup made installation straightforward. They kept me in the loop throughout, answering my questions promptly which gave me a lot of confidence. The shipping was free, which was a nice bonus on top of the great price. My car runs perfectly now, and I’m really glad I found this seller.
Jeremy Wallace –
I purchased the 2012 Mercedes E550 4.7L AT ECM, and I’m very impressed with the quality of the unit. The ECU arrived quickly thanks to their free shipping, which was a nice bonus. It was already VIN programmed, making installation straightforward without any hassle. They also responded promptly when I had a couple of questions, which made the whole process smooth and stress-free.
Paul Bates –
Great quality ECM for my 2012 E550, arrived fast with free shipping and was ready to go right out of the box. Seller kept me informed every step of the way!
David Lopez –
Fast shipping and a plug-and-play unit made this a hassle-free fix for my 2012 E550. Saved me a bundle versus dealer prices and everything works perfectly.