If you drive forward or the back door opens,the seat belt warning appears on the display.It will turn off after about 30 seconds and this sometimes interferes.Here car-auto-repair.com show you guide on how to use Xentry software to disable it.This method work on Benz W212,W204,W207,W218.
Preparations:
2024.03 Benz Xentry.OpenShell.XDOS Diagnostic Software Free Download
How to Install Benz Xentry 2024.03 Diagnostic Software
Procedures:
Connect MB Star C4 to vehicle and then run Xentry software on PC
Select “Mercedes-Benz” and select your car type model
274.920–>772.995
After vehicle identification
Select “Type of control units” and click “Next”
Select “Information and communication”–>”KI-instrument cluster”
Select “Developer Data” and “+”alee-Codierungen”
Scroll down to select “103” Belt_Warning_Back
Change value from “Warnung(en) aktivieren” to “Warnung(en) deaktivieren”
And click “Yes” to change value
Done!