Description
2015 Mercedes-Benz S400 3.0L AT gas ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2015 Mercedes-Benz S400 3.0L 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



David James –
Arrived quickly with free shipping and was perfectly programmed for my 2015 S400—plug-and-play made installation a breeze.
Miguel Chapman –
The 2015 Mercedes S400 ECM arrived quickly and was exactly as described. Installation was straightforward since it was completely plug-and-play, which saved me a lot of hassle. Compared to dealer prices, this service was incredibly affordable and the communication from the seller was very responsive. Overall, a smooth experience that got my car back on the road fast.
Elliot Bailey –
I was really impressed with how smoothly everything went when I ordered the VIN programmed ECM for my 2015 Mercedes S400. The seller provided professional programming service, so it arrived ready to install with no extra setup needed. Shipping was surprisingly fast and reasonably priced, which made the whole process hassle-free. They also kept me updated throughout, answering all my questions promptly. After installation, my car runs just like new—definitely a solid purchase.
Scott Anderson –
Fast shipping and the plug-and-play unit worked perfectly, saving me a ton compared to dealer prices. Installation was smooth and the service was very professional.
Mark Perez –
I was really impressed with the seamless plug-and-play setup of this ECM for my 2015 Mercedes S400. The unit arrived quickly with very reasonable shipping costs, which was a nice bonus. Customer service was outstanding—they answered all my questions promptly and kept me informed throughout the process. Installation was straightforward, and my car runs perfectly now.