Description
2012 Mercedes-Benz R350 3.0L AT diesel ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz R350 3.0L AT diesel 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



Ian Gonzalez –
I was really impressed with how quickly the ECM arrived—shipping was faster than I expected. The unit was completely plug-and-play, which made the installation hassle-free and saved me from dealing with complicated programming. Compared to dealership prices, this service saved me a significant amount of money. The team was also very professional and responsive, making the whole process smooth from start to finish.
Liam Watson –
Fast shipping and the plug-and-play ECM worked perfectly in my 2012 Mercedes R350. This saved me a ton compared to dealer prices and the installation was a breeze.
Oliver Morgan –
The plug-and-play setup made installation a breeze, and their communication was spot on throughout the process. Fast shipping too, which I really appreciated.
Miguel Jenkins –
I was really impressed with how quickly the ECM arrived after I placed my order—shipping was faster than I expected. When it came time to install it on my 2012 Mercedes R350, the unit was truly plug-and-play, which made everything so much simpler than I had feared. This saved me a ton of money compared to the dealer’s outrageous fees. The company was also very responsive and professional throughout the process, answering all my questions promptly. Overall, a smooth experience that got my diesel engine back to running perfectly without any hassle.
Robert Miles –
I purchased the 2012 Mercedes R350 ECM for my diesel and was very impressed with the entire process. The unit arrived quickly with free shipping, which was a nice bonus. The ECU was perfectly programmed to my VIN, and installation was straightforward thanks to their plug-and-play setup. Customer service was also very responsive, answering my questions promptly and keeping me informed throughout.