Description
2014 Mercedes-Benz E300 3.5L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 Mercedes-Benz E300 3.5L AT gas models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Sean Nelson –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2014 E300—installation was a breeze. Communication was spot on, and they answered all my questions promptly.
Marcus Barrett –
The ECU for my 2014 Mercedes E300 arrived quickly and was already VIN programmed, making installation straightforward with no extra hassle. The team’s communication was top-notch—they responded promptly to all my questions and kept me informed throughout the shipping process. I appreciated the reasonable shipping cost and the overall professionalism with the plug-and-play setup. Highly recommend if you want a smooth experience and reliable product.
Marcus Douglas –
Fast shipping and the ECM was truly plug-and-play, saving me a bundle versus dealer prices. Installation went smoothly thanks to their clear instructions and quick communication.
Jorge Page –
I was a bit nervous buying an ECU online for my 2014 Mercedes E300, but this experience exceeded my expectations. The unit arrived quickly with free shipping, which was a nice bonus. What impressed me the most was the professional programming service—they had my VIN programmed perfectly, and it was truly plug-and-play with no extra hassle. The communication was spot-on as well; they answered all my questions promptly and kept me informed throughout the process. Overall, the quality of the ECM is outstanding, and my car runs like new again.
Nathan Poole –
I recently purchased the 2014 Mercedes E300 ECM from this seller, and I couldn’t be happier with the experience. The unit arrived quickly with free shipping, which was a great bonus. What impressed me most was how smoothly the programming service was handled—they had it VIN programmed and ready to go right out of the box. Throughout the process, the seller was very responsive, answering all my questions promptly and keeping me informed every step of the way. Installation was straightforward, and my car has been running perfectly ever since. Definitely a trustworthy source for these parts.
Isaac Sanders –
I was really impressed with how quickly this ECM arrived—shipping was surprisingly fast. The unit came fully programmed for my 2014 Mercedes E300 3.5L, so installation was literally plug-and-play without any hassle. Choosing this over a dealer replacement saved me a significant amount of money, and their communication throughout the process was clear and professional. Overall, a smooth experience from start to finish.
Harrison Lawrence –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit was perfectly programmed for my 2014 Mercedes E300, and installation was a breeze since it was truly plug-and-play. This saved me a ton compared to the dealer’s repair costs, which were shockingly high. The communication with the seller was clear and helpful throughout the process, making me feel confident in my purchase. Overall, the fast shipping and professional service made what could have been a stressful repair incredibly smooth. I highly recommend this for anyone needing a reliable ECM replacement.