Description
2019 Mercedes-Benz GLC43 3.0L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2019 Mercedes-Benz GLC43 3.0L AT gas 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 require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
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





Ian Hill –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2019 GLC43—installation was a breeze. Their team answered my questions promptly, making the whole process stress-free.
Cooper Green –
I’m really impressed with the quality of this ECM for my 2019 Mercedes GLC43. It arrived quickly with free shipping, which was a nice bonus. The unit was VIN programmed perfectly and worked right out of the box without any issues. The seller also answered my questions promptly, which made the whole process smooth and stress-free.
Steven Bell –
I needed a replacement ECM for my 2019 Mercedes GLC43 and was a bit worried about the programming process. Thankfully, the team provided a professional programming service that made the installation completely plug-and-play. The unit arrived quickly and the shipping cost was very reasonable, which was a nice bonus. Throughout the process, they kept me informed and answered all my questions promptly, which gave me a lot of confidence. Since installing it, my car runs perfectly, just like new. Overall, a smooth experience from start to finish.