Description
2009 Mercedes-Benz E350 3.5L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 Mercedes-Benz E350 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: 647-247-8555




Blake Watson –
The ECU arrived quickly with free shipping and worked flawlessly right out of the box. Excellent communication throughout the process made this an easy purchase.
Chris Jenkins –
Fast shipping and the plug-and-play unit worked perfectly—saved me a ton compared to the dealer price. Installation was straightforward and the customer support was very helpful.
Chris Allen –
I was really impressed with how quickly this ECM arrived—shipping was faster than I expected. The unit was truly plug-and-play, and I had it installed without any issues in just a short time. The VIN programming was spot on, so everything synced perfectly with my 2009 Mercedes E350. Choosing this over a dealer replacement saved me a significant amount of money, and the customer support was very helpful throughout the process.
Caleb Hudson –
I was really impressed with how quickly this ECU arrived after I placed my order. The fact that it was already VIN programmed made installation a breeze—just plug and play, no hassle at all. This saved me a ton of money compared to taking my E350 to the dealership, where repair quotes were shockingly high. The whole process was smooth from start to finish, and the seller kept me updated throughout. I’m very happy with the professional service and would definitely recommend this to anyone needing an ECM replacement.
Noah Burton –
I’m really impressed with the quality of this ECM for my 2009 Mercedes E350. It came VIN programmed and ready to install, which made the process super straightforward—no extra programming needed on my end. Shipping was very reasonable and it arrived quicker than I expected. The communication from the seller was excellent too; they answered all my questions promptly and kept me informed throughout.