Description
2012 Mercedes-Benz S350 3.0L AT diesel ECM / ECU – Programmed | Plug&Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 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: 647-247-8555
Caleb Scott –
The ECU arrived quickly with free shipping and was exactly as described, making installation a breeze. Communication was spot-on, and they answered all my questions promptly.
Hunter Carter –
I was really impressed with how quickly the 2012 Mercedes S350 ECM arrived—it was shipped out fast and arrived in perfect condition. Installation was straightforward since the unit was fully plug-and-play, which made the whole process hassle-free. The programming was spot-on, and this service saved me a huge amount compared to dealer prices. Communication throughout was clear and professional, making the whole experience smooth from start to finish.
Scott Palmer –
Fast shipping and the ECU was truly plug-and-play. Saved me a bundle over dealer costs and the whole process was smooth from start to finish.
Carlos Green –
I needed a replacement ECM for my 2012 Mercedes S350 diesel, and this unit arrived much faster than I expected. It was completely plug-and-play, which made the installation straightforward—no extra programming on my end. The service team was very responsive and helped me through the entire process, which was a big relief. Most importantly, this saved me a ton of money compared to going through the dealer, who quoted me a price almost double. Overall, a smooth experience and a solid product that got my car back on the road quickly.
Adam Graham –
I ordered the 2012 Mercedes S350 3.0L AT diesel ECM, and it arrived quickly with free shipping, which was a nice bonus. The unit was already VIN programmed, so installation was straightforward and completely plug-and-play. I also appreciated how the team kept me informed throughout the process, answering my questions promptly and professionally. Overall, a smooth experience and great quality product.