Description
2012 Mercedes-Benz C-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz C-Class 3.0L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $200 CAD / $140 USD
A prepaid shipping label will be emailed to you.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Ethan Baker –
I was a bit nervous ordering an ECU online, but this 2012 Mercedes-Benz C-Class unit arrived exactly as described and was pre-programmed for my VIN. Installing it was surprisingly straightforward—just plugged it in and the car fired right up without any issues. Shipping was faster than I expected, and when I had a couple of questions, their support team was quick to respond and very helpful. It saved me a ton of time and hassle compared to going through a dealership. Overall, a seamless experience that got my car back on the road in no time.
Ethan Turner –
This ECM arrived quickly and was perfectly programmed for my 2012 C-Class—installed without a hitch and car runs flawlessly. Highly recommend!
Ryan Walker –
I was a bit nervous about replacing the ECM on my 2012 Mercedes-Benz C-Class, but this unit arrived perfectly programmed for my VIN and was truly plug-and-play. Installation was straightforward, and my car started up right away without any issues. Shipping was quick, and the support team was helpful when I had a couple of questions. Overall, a seamless experience that saved me a lot of hassle and money.