A 2013 E-Class (W212) has a failed AdBlue injector. The owner does not want to replace the expensive system.
Perform deep software resets on stubborn ECUs that refuse to communicate normally. xentry developer v1.1.0
Unlike standard diagnostic software, Xentry in Developer Mode provides deeper access to a vehicle’s electronic control units (ECUs). A 2013 E-Class (W212) has a failed AdBlue injector
Standard Xentry software is designed for routine maintenance and basic repairs. The extension is a powerful modification that unlocks "Development Data." This allows you to perform tasks usually reserved for factory engineers. Key Features & Capabilities xentry developer v1.1.0