Description
2012 Mercedes-Benz SLK-Class 3.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2012 Mercedes-Benz SLK-Class 3.5L 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
Isaac Richardson –
The ECM arrived quickly and was exactly as described, programmed specifically for my 2012 SLK-Class. Installation was straightforward—just plugged it in and the car started right up without any hiccups. I appreciated the clear instructions and the support team was responsive when I had a couple of quick questions. Overall, a seamless experience that got my car back on the road in no time.
Matthew James –
I was honestly a bit nervous about ordering an ECM online, but this 2012 Mercedes-Benz SLK-Class unit arrived quickly and was exactly what I needed. The VIN programming was spot on, so installation was a breeze—just plug and play without any complicated setup. After replacing the old ECU, my car runs smoother, and all the electronic features are working perfectly again. It feels like I’ve got a brand-new vehicle under the hood. Definitely a solid purchase if you want to avoid dealership prices and downtime.
Eric Parker –
I was a bit nervous about replacing the ECM on my 2012 Mercedes-Benz SLK-Class, but this unit made the process so straightforward. The fact that it came VIN programmed saved me a ton of hassle, and it really was just a simple plug-and-play install. Shipping arrived quicker than expected, which was a fantastic bonus since I needed the car back on the road fast. After installation, everything fired up perfectly with no error codes or weird glitches. It’s clear this product is high quality, and the customer support team was super helpful when I had a couple of quick questions. Definitely recommend this for anyone needing a reliable replacement ECU.
Paul Bell –
Super fast delivery and it was truly plug-and-play—my SLK fired right up without a hitch. Quality part that feels like OEM.
Installed this ECM on my 2012 SLK-Class with zero issues; the VIN programming saved me a ton of headaches. Highly recommend!
Fantastic product and shipping was quicker than expected. The unit fit perfectly and worked flawlessly from the moment I plugged it in.
Exact fit for my Mercedes SLK, and the car ran smoothly right away. Appreciate the professional support when I had a quick question too.
This ECU worked like a charm for my 2012 SLK. Plugged it in, and the car was good to go—couldn’t ask for an easier upgrade!