Description
2014 Mercedes-Benz C-Class 3.5L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 Mercedes-Benz C-Class 3.5L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
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:
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Complete communication & CAN-bus verification
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Sensor input/output and signal integrity checks
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Injector & ignition pulse simulation
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Power, ground, and load-circuit analysis
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Flash memory integrity and checksum validation
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Thermal and voltage-stress testing to confirm reliability
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
Important Note
Some vehicles equipped with IMMO (Immobilizer) or PATS (Passive Anti-Theft System) may require additional key programming after installation. This is normal for models where security data must be synchronized with the vehicle’s body control system.
For a 100% plug-and-play solution with no relearns, no key programming, and no compatibility issues, we recommend our ECU Cloning Service, which transfers all original security, immobilizer, and configuration data directly into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Samuel Anderson –
This ECU fit perfectly and was already programmed to my VIN—installation was a breeze and the car runs flawlessly. Super fast delivery too!
Brian Smith –
I was really impressed with how smoothly this ECM/ECU fit into my 2014 Mercedes C-Class. It came pre-programmed to my VIN, so installation was straightforward and hassle-free. Shipping was surprisingly quick, and I appreciated the helpful customer support when I had a couple of questions. Overall, a reliable replacement that got my car back on the road without a hitch.
Benjamin Brooks –
I was really impressed with how straightforward the installation was for this ECM. It arrived quickly and matched my 2014 C-Class perfectly, saving me a lot of time compared to the hassle I expected. The unit was already VIN programmed, so I didn’t have to deal with any complicated setups or extra trips to the dealer. After swapping it out, my car started right up, and everything runs smoothly without any warning lights. It feels great knowing I got a high-quality part without the usual stress. Definitely recommend this for anyone needing a reliable ECU replacement.