Description
2012 Mercedes-Benz G-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz G-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
Cameron Phillips –
I was a bit nervous about ordering an ECU online, but this 2012 Mercedes-Benz G-Class unit exceeded my expectations. It arrived quicker than I thought, and the installation was surprisingly straightforward—literally plug and play with no extra programming needed on my end. My vehicle fired up right away and runs smoother than it has in years. Customer support was also very helpful when I had a couple of questions before purchasing. Overall, this was a hassle-free experience that gave my G-Class new life. Highly recommend to anyone needing a reliable ECM replacement.
Ethan Brooks –
The 2012 Mercedes-Benz G-Class ECM arrived quickly and was perfectly programmed to my VIN, making installation seamless. I appreciated how it truly was a plug-and-play unit, which saved me a lot of time and hassle in the garage. The engine runs smoothly now, and I didn’t have to spend extra time or money on coding. Overall, this was a hassle-free upgrade that performed exactly as promised.
Robert Richardson –
Swapped this ECM in without any hassle—true plug and play! It fired right up and runs flawlessly.
Super fast shipping and the ECU was pre-programmed perfectly for my G-Class. Couldn’t be happier with the seamless install!