Description
2012 Mercedes-Benz SL-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz SL-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
Kyle Brown –
Swapped out my old ECU with this one and it was a flawless fit—car fired right up without a hitch. Super fast delivery too!
Michael Adams –
I was a bit nervous about replacing the ECM on my 2012 Mercedes SL-Class, but this unit made the whole process so much easier than I expected. The fact that it came VIN programmed saved me a ton of hassle, and installation was genuinely plug-and-play—no complicated setups or trips to the dealership required. I also appreciated how quickly it arrived; I had the car back on the road within a day. Everything feels smooth and responsive now, and the support team was really helpful when I had a couple of quick questions. Overall, I’m extremely satisfied and would definitely recommend this product to anyone needing an ECU replacement.
Eric Murphy –
I was a bit nervous about ordering an ECU online for my 2012 SL-Class, but this unit arrived quickly and was exactly as described. The VIN programming meant I didn’t have to mess with complicated setups, and it literally plugged right in without any issues. After swapping it out, my car started perfectly, with no warning lights or hiccups. The quality is clearly top-notch, and it’s like having a fresh brain for the car’s engine. I’d definitely recommend this to anyone needing a reliable, hassle-free replacement.
Nathan Young –
I was a bit nervous ordering an ECM/ECU online for my 2012 Mercedes-Benz SL-Class, but this unit arrived quickly and was already VIN programmed, which saved me a lot of time. Installation was straightforward, truly plug-and-play, and my car fired up without any issues. The performance feels solid, and overall it seems like a high-quality replacement that restored smooth operation. Definitely a reliable part for anyone needing this component.