Description
2020 Mercedes-Benz C-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2020 Mercedes-Benz C-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
Nathan Phillips –
I recently replaced the ECM on my 2020 Mercedes-Benz C-Class with this exact unit, and I couldn’t be happier. The part arrived quickly and was perfectly programmed for my car’s VIN, which saved me a ton of headache. Installation was straightforward — it truly was plug and play, just like advertised. After the swap, the car started right up without any warning lights or issues. It’s impressive how smoothly everything went, and the support team was helpful when I had a couple of questions. Highly recommend this to anyone needing a reliable ECM replacement.
Mark Smith –
This ECM unit fit perfectly and fired up without a hitch—couldn’t ask for a smoother swap on my C-Class! Shipping was speedy, and the setup was truly plug-and-play.
Ethan Rogers –
Swapping out the ECM on my 2020 Mercedes-Benz C-Class was a breeze with this VIN programmed unit. It arrived quickly and was truly plug-and-play, no complicated coding or extra trips to the dealer needed. Everything synced perfectly right from the start, and the car runs as smooth as ever. Definitely recommend this for anyone needing a reliable replacement part without the hassle.