Description
2012 Mercedes-Benz C300 3.5L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz C300 3.5L 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
David Peterson –
Fast shipping and a plug-and-play unit made installation a breeze—this saved me a ton versus the dealer price. Great communication and truly professional service.
Zachary Johnson –
I was a bit nervous about ordering an ECM online for my 2012 Mercedes C300, but this purchase exceeded my expectations. The unit arrived quickly with free shipping, which was a nice bonus. What really impressed me was the plug-and-play setup — it was literally ready to go right out of the box, saving me a huge headache. Their team also kept me in the loop the whole time, promptly answering my questions and making sure everything was perfect. My car runs smoothly now, and I’m really glad I chose this seller.
Scott Collins –
Got my 2012 C300 ECM quickly with free shipping, and the plug-and-play setup was flawless—highly recommend!
David Evans –
I was really impressed with how smoothly the VIN programming was handled for this ECM. The shipping was super reasonable, and the unit arrived well-packaged and on time. It fit perfectly in my 2012 Mercedes C300, and the performance has been flawless ever since. The whole process was hassle-free, and I appreciated the clear communication throughout.