Description
2012 Mercedes-Benz S-Class 6.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz S-Class 6.0L 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
Elijah Hall –
This ECM arrived quickly and was a flawless fit for my 2012 S-Class—installed in minutes with zero hassle. Perfect plug-and-play solution!
Caleb Perez –
I was a bit nervous about ordering an ECM online, but this 2012 Mercedes-Benz S-Class unit arrived quickly and was exactly as described. Installation was straightforward—just plugged it in, and everything synced up perfectly without any programming headaches. My car fired right up and runs smoother than it has in years. I also appreciated the helpful support team who answered all my questions promptly. Definitely saved me a lot of time and money compared to going through a dealership. Highly recommend this for anyone needing a reliable replacement.
Matthew Clark –
I was a bit nervous about ordering an ECM/ECU online, but this unit for my 2012 Mercedes-Benz S-Class arrived quickly and was ready to go right out of the box. The VIN programming was spot-on, making the installation seamless without any extra tuning or trips to the dealer. Once installed, the car fired up perfectly, and all systems ran smoothly without any warning lights. It’s clear the team behind this product understands exactly what’s needed for a hassle-free replacement. Definitely saved me a lot of time and headache compared to the usual dealer route. Highly recommend for anyone needing a reliable, plug-and-play solution.
David Bailey –
The ECM arrived quickly and was exactly as described, perfectly programmed for my 2012 Mercedes-Benz S-Class. Installation was straightforward, truly plug-and-play with no extra coding needed on my end. After swapping it in, my car fired right up and has been running smoothly without any issues. Really impressed with the quality and the hassle-free process.