Description
2014 Mercedes-Benz S550 5.5L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2014 Mercedes-Benz S550 5.5L 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
Ethan Little –
Fast shipping and the ECU was truly plug-and-play, saving me a ton compared to the dealer price. Installation was straightforward and the whole process was hassle-free.
Jason Peterson –
I was a bit nervous ordering an ECU online, but this 2014 Mercedes S550 ECM arrived quickly with free shipping, which was a nice bonus. The unit came VIN programmed and was truly plug-and-play, saving me a ton of hassle. I reached out a couple of times with questions, and their customer service responded promptly and clearly each time. Installation went smoothly, and my car runs perfectly now—better than before, actually. Overall, a solid experience from start to finish.
Benjamin Graham –
I was impressed with how quickly this ECM arrived, especially with free shipping included. The unit was perfectly programmed for my 2014 Mercedes S550, and installation was straightforward thanks to their plug-and-play setup. The communication from the seller was top-notch—they kept me informed every step of the way, which made the entire process stress-free. Overall, a great experience and excellent product quality.
Hunter Wilson –
I was a bit nervous ordering an ECM online for my 2014 Mercedes S550, but this experience completely exceeded my expectations. The module arrived quickly with free shipping, which was a nice surprise. What really stood out was how easy the plug-and-play setup was — no complicated programming required on my end. The car started right up and runs smoothly now, just like before the old unit gave out. I also appreciated the clear communication from the seller; they responded to my questions quickly and kept me informed throughout the process. Overall, a hassle-free purchase that brought my S550 back to life.
Andrew Lopez –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2014 S550—installation was a breeze.
Great communication throughout the process, and the plug-and-play setup saved me so much time.
Really impressed with the fast turnaround and the professional programming service for my Mercedes.
Shipping was super reasonable and the quality of the updated ECM exceeded my expectations.
They answered all my questions right away and the VIN programmed ECU worked flawlessly right out of the box.