Description
2018 Mercedes-Benz CLS-Class 5.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2018 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
Liam Reed –
Perfect fit for my 2018 CLS-Class, installed easily and runs flawlessly—highly recommend this ECM! Fast delivery and hassle-free setup made the whole process a breeze.
Tyler Stewart –
I was pleasantly surprised by how straightforward the installation was with this ECM/ECU for my 2018 Mercedes-Benz CLS-Class. The unit arrived quickly and was already VIN programmed, which saved me a ton of time. It worked perfectly right out of the box, and I didn’t have to fiddle with any complicated setups. Overall, a great product that restored my car’s performance exactly as expected.