Description
2013 Mercedes-Benz S350 3.0L AT diesel ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2013 Mercedes-Benz S350 3.0L AT diesel 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



Jonah Clark –
I was a bit nervous about ordering an ECU online, but this 2013 Mercedes S350 3.0L AT diesel ECM arrived quickly and was already VIN programmed, which saved me a ton of hassle. The team kept me well informed throughout the whole process, answering my questions promptly and clearly. Installation was straightforward since it was truly plug-and-play, just as promised. Shipping was also surprisingly fast and reasonably priced, considering the size and weight of the unit. After swapping it in, my car runs smoother than ever, and I couldn’t be happier with the service quality.
Shane Torres –
I was really impressed with how quickly the ECM arrived after I placed my order, it made the repair process much less stressful. The unit was fully programmed to my VIN and worked perfectly as a plug-and-play replacement, which saved me countless hours. This solution ended up costing a fraction of what the dealer quoted me, and the team was very responsive when I had questions. Overall, a smooth experience from start to finish and a smart choice for anyone needing this part.
Dylan Russell –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle versus the dealer, and the installation was hassle-free.
Victor Sharp –
Fast shipping and the ECU arrived exactly as described, plug-and-play with no hassle—highly recommend!
Dean Webb –
I purchased the 2013 Mercedes S350 3.0L AT diesel ECM from this seller and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. Their team also provided professional VIN programming, so it was truly plug-and-play once I got it installed. Communication was excellent, and they kept me informed throughout the process, making the whole experience stress-free.