Description
2012 Mercedes-Benz E-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz E-Class 5.5L 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
Elijah Johnson –
I was a bit nervous ordering an ECM/ECU online, but this one for my 2012 Mercedes E-Class arrived quicker than I expected and fit perfectly. The VIN programming made the whole install seamless—no complicated setup or trips to the dealer needed. My car fired right up and runs smoothly, just like before the old unit gave out. The customer support team was helpful when I called to double-check some details, which made me feel confident throughout the process. Overall, a hassle-free experience that saved me both time and money. Definitely recommend this for anyone needing a reliable replacement.
Owen King –
I was a bit nervous ordering an ECM for my 2012 Mercedes-Benz E-Class, but this unit arrived quickly and was exactly as described. The VIN programming saved me so much hassle—no need for complicated setups or extra trips to the dealership. Installation was straightforward, and my car started right up without any issues. It’s clear this is a quality part, and the customer support team was really helpful when I had a couple of questions. Overall, a smooth experience from start to finish. Highly recommend if you want a reliable, plug-and-play replacement!
Benjamin Morgan –
Exact fit and worked perfectly right out of the box—installation was a breeze! Super fast delivery too.
This ECM plugged in without any hassle and my E-Class runs smoother than ever. Highly recommend!
Quick shipping and flawless setup—had my car back on the road in no time with no complications.
The VIN programming was spot on, and it slid right in like it was made for my car (because it was). Very satisfied!
Arrived fast and worked immediately, just like they said. Made replacing my ECU stress-free and simple.
Lucas Stewart –
This ECM arrived exactly as described and was already programmed to my VIN, which saved me a ton of hassle. Installation was straightforward, and my 2012 Mercedes started up perfectly with no issues. Shipping was prompt, and I appreciated the helpful customer service team who answered all my questions quickly. Overall, a smooth and reliable purchase that got my car back on the road in no time.