Description
2015 Mercedes-Benz S-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2015 Mercedes-Benz S-Class 5.5L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $200 CAD / $140 USD
A prepaid shipping label will be emailed to you.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Ethan Ward –
I was a bit nervous about ordering an ECM/ECU online, but this one for my 2015 Mercedes-Benz S-Class arrived quickly and was exactly as described. Installation was super straightforward — it literally just plugged right in, no extra programming needed on my end. After swapping it out, the car fired up perfectly and runs smoother than before. If you’re looking for a reliable replacement part with minimal hassle, this is a solid choice. The seller also answered a couple of my questions promptly, which gave me extra confidence throughout the process.
Henry Gray –
The replacement ECM arrived quickly and was exactly as described, already programmed to my S-Class by VIN which saved me a ton of hassle. Installation was straightforward—truly a plug-and-play experience with no additional tuning required. After swapping it out, my car runs smoothly and all systems function perfectly. Very impressed with the quality and support throughout the process.
Leo Howard –
I was a bit nervous about swapping out the ECM on my 2015 Mercedes-Benz S-Class, but this unit arrived perfectly programmed and was truly plug and play. Installation was straightforward, and my car fired up immediately without any issues. It’s like the car never skipped a beat, running smoothly and flawlessly now. Shipping was surprisingly quick, which helped me get back on the road faster than I expected. Overall, this was exactly what I needed to get my luxury ride back in top shape without any hassle.
Diego Watson –
Exactly what I needed for my 2015 S-Class—plugged in perfectly with zero hassle. Shipping was quick and the unit works flawlessly.