Description
2012 Mercedes-Benz C300 2.0L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz C300 2.0L 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: Local: 647-247-8555 | Toll-Free: 1-800-915-5566



Elijah Poole –
I was impressed with how quickly the 2012 Mercedes C300 ECM arrived, especially with free shipping included. The unit came fully VIN programmed, which made installation straightforward without any extra hassle. The communication from the seller was excellent—they kept me informed every step of the way and answered my questions promptly. Overall, the quality of the ECU exceeded my expectations and my car runs perfectly now.
Henry Watson –
Great quality ECM, arrived quickly with free shipping and was ready to install right out of the box. The communication was spot-on throughout the whole process.
Miguel Barrett –
Fast shipping and a plug-and-play unit made installation a breeze, plus I saved a ton compared to dealer prices. Great communication and professional service throughout.
Tyler Johnson –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit was truly plug-and-play, making installation straightforward and hassle-free. Choosing this service saved me a significant amount compared to dealer pricing, and the communication throughout the process was clear and professional. Overall, a smooth experience that got my C300 running perfectly again in no time.