Description
2020 Mercedes-Benz GLS-Class 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2020 Mercedes-Benz GLS-Class 3.0L 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 Edwards –
The 2020 Mercedes-Benz GLS-Class ECM arrived quickly and was exactly as described. Installation was straightforward with no glitches—I simply plugged it in, and it worked perfectly right away. The VIN programming was spot on, and I appreciated the helpful support team who answered all my questions promptly. Overall, a smooth and hassle-free experience that got my vehicle back on the road fast.
Chris Morris –
Installed the ECM in minutes with zero hassle—runs perfectly and shipping was surprisingly quick. Highly recommend for anyone needing a reliable replacement!
This ECU fit my 2020 GLS-Class flawlessly and my car fired up right away. Great product and the support team was super helpful with the programming details.
Super smooth experience from order to installation. The VIN programming worked like a charm, making this a true plug-and-play solution for my Mercedes.
Fast delivery and an exact match for my vehicle’s specs—installation was straightforward and it’s performing great. Definitely worth it for peace of mind.
The ECM arrived quickly and was already programmed to my VIN, saving me a ton of setup time. My GLS is back to running like new!