Description
2009 Mercedes-Benz CLS-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 Mercedes-Benz CLS-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
John Perez –
I was impressed with how quickly the ECU arrived and how straightforward the installation process was. It fit perfectly with my 2009 Mercedes-Benz CLS-Class 5.5L, and the engine ran smoothly right from the start. The VIN programming was spot on, saving me a lot of hassle. Overall, a reliable part that made upgrading my car hassle-free.
Steven Mitchell –
I was a bit nervous about ordering a replacement ECM for my 2009 Mercedes-Benz CLS-Class, but this one exceeded my expectations. It arrived quickly and was ready to go right out of the box with no complicated setup needed. The VIN programming matched perfectly, and installation was straightforward—felt like I was just swapping parts rather than dealing with some complex upgrade. After getting it installed, my car fired up immediately and runs smoothly without any error codes. Really glad I found a reliable solution that didn’t require multiple trips to the mechanic. Highly recommend this for anyone needing a hassle-free ECM replacement.
Jason Allen –
I was a bit nervous ordering an ECM/ECU online, especially for my 2009 Mercedes-Benz CLS-Class, but this unit arrived quickly and was exactly as described. The VIN programming made the installation a breeze—no complicated procedures or guesswork involved. Once installed, my car fired right up and runs smoothly without any issues. It’s clear this product is a perfect match for my vehicle. I really appreciate the seller’s support too; they answered all my questions promptly, which gave me extra confidence during the process. Highly recommend it for anyone looking to replace their ECM without hassle.
Kyle Kelly –
The ECM arrived quickly and fit perfectly, making installation a breeze—my CLS is running like new again! Absolutely seamless experience from start to finish.