Mercedes uses a diagnostic software called Xentry for its vehicles. Xentry Tool is a professional diagnostic tool that allows technicians to access and analyze various systems and components in Mercedes vehicles. With Xentry, technicians can check the data on the vehicle, such as the VIN code, vehicle model, engine code, and transmission code.

One of the key features of Xentry is its ability to read and clear errors in the vehicle's systems. If one or more sensors are damaged or detecting an error, Xentry can easily pinpoint the source of the problem, allowing technicians to fix it more efficiently. This is particularly useful in cases where the damage may be hidden and would require extensive disassembly of the vehicle to locate.

Xentry also allows technicians to activate the actuators in the vehicle. Actuators are devices that control various functions in the vehicle, such as opening and closing doors or adjusting the steering angle. With Xentry, technicians can perform basic settings, such as resetting maintenance reminders, setting the steering angle, coding injectors, and relearning gears.

In addition to Xentry, Mercedes also uses a diagnostic tool called Star Diagnosis. Star Diagnosis is known for its ability to provide real-time data and perform in-depth analysis of a vehicle's systems. It provides comprehensive information about engine performance, emissions, fuel efficiency, and more. This allows technicians to accurately diagnose and troubleshoot any issues in the vehicle.

It's worth noting that there is another diagnostic software called Vediamo, which is an engineering-level diagnostic and development software for Mercedes. Unlike Xentry and Star Diagnosis, Vediamo is aimed at engineers rather than technicians. It offers more advanced features and functions for diagnostic and development purposes.

In conclusion, Mercedes uses Xentry as its professional diagnostic software for its vehicles. Xentry allows technicians to check vehicle data, read and clear errors, activate actuators, and perform basic settings. It is a valuable tool in accurately diagnosing and fixing issues in Mercedes vehicles. Additionally, Mercedes also utilizes Star Diagnosis for comprehensive analysis of a vehicle's systems, and Vediamo for engineering-level diagnostic and development purposes.