Description
2012 Mercedes-Benz E-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz E-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
Chris Edwards –
I was a bit nervous about replacing the ECM on my 2012 Mercedes E-Class, but this unit made the whole process surprisingly simple. It arrived quickly and was already programmed to my VIN, which saved me a ton of extra steps. Installation was straightforward and truly plug-and-play—no headaches or extra trips to the mechanic. After swapping it out, my car fired right up and runs flawlessly. It feels like a brand-new engine control, and I’m really happy with the quality and support I received along the way.
Patrick Kelly –
I was a bit nervous about ordering this ECM/ECU for my 2012 Mercedes E-Class, but it arrived quickly and fit perfectly. The VIN programming meant I didn’t have to mess around with complicated setups, which was a huge relief. After installation, my car started right up with no issues, and everything runs smoothly now. It’s clear this part was built to the exact specs, and the support team was helpful when I had a quick question. Overall, a seamless experience that got my vehicle back on the road in no time.
Chris Parker –
Installed the ECM in minutes, and my E-Class runs flawlessly now—super fast delivery and zero hassle. Couldn’t ask for a smoother fix!
Cooper Nelson –
I was pleasantly surprised at how straightforward the installation was — the unit arrived VIN programmed and truly ready to go right out of the box. It fit my 2012 E-Class perfectly without any issues, and the engine runs smoothly now. Shipping was quicker than expected, and the support team was responsive when I had a couple of questions. Overall, this was a hassle-free experience and exactly what I needed.