Description
2012 Mercedes-Benz R-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz R-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
Miguel Carter –
I was a bit nervous about replacing the ECM on my 2012 Mercedes-Benz R-Class, but this unit made the whole process surprisingly easy. It arrived quickly and was already VIN programmed, so installation was literally just plug and play. Once everything was connected, my engine started right up without any issues or warning lights. The quality feels top-notch, and it’s been running smoothly ever since. Highly recommend this to anyone needing a reliable replacement without hassle.
Travis Ramirez –
Perfect fit for my 2012 R-Class and arrived quicker than expected—installation was seamless with no hiccups. Truly plug-and-play!
Got this ECM for my Benz and it was dead simple to install, no programming headaches at all. Runs like a charm now!
Fast delivery and the VIN programming meant it worked straight out of the box—couldn’t ask for an easier upgrade!
Exactly what I needed for my R-Class; setup was smooth and support was super helpful when I had a quick question.
This ECU fits perfectly and fired up immediately after install—no extra tuning required. Very satisfied with the purchase!
Travis Sanders –
The ECM arrived quickly and was exactly as described. Installation was straightforward, and it fit perfectly with my 2012 Mercedes-Benz R-Class without any complications. After programming it to my VIN, the vehicle started up and ran smoothly right away. I appreciate the clear instructions and prompt customer support throughout the process.