Description
2019 Mercedes-Benz S-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2019 Mercedes-Benz S-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
Logan Murphy –
I was a bit nervous about ordering an ECM for my 2019 Mercedes S-Class, but this unit arrived exactly as described and was already VIN programmed, which saved me a lot of hassle. Installation was surprisingly straightforward—I had it swapped in and the car fired right up without any issues. The shipping was quick, arriving well-packaged and on time. I also appreciated the responsiveness of the tech support team when I had a couple of questions before purchase. Overall, this was a smooth experience and the car feels as reliable as ever. Highly recommend this if you need a plug-and-play ECU replacement.
Cameron Green –
I purchased the 2019 Mercedes-Benz S-Class 3.0L ECM/ECU and was really impressed by how smoothly everything went. The module came VIN programmed and ready to install—no complicated setup required. Shipping was surprisingly quick, and I appreciated the helpful support team who answered my questions promptly. Overall, this was a hassle-free experience that got my car back on the road without any issues.
Connor Edwards –
Arrived quickly and fit perfectly—installation was a breeze with no programming hassles. Highly recommend for anyone needing a reliable ECU replacement!