Right from the horse's mouth. Mercedes uses a Bosch ECM aka ECU among other modules.
https://www.boschdiagnostics.com/diy/products/bosch-obd-1050-mobile-scan-diagnostics
The O'Reilly link said $99.99 for my area code.
https://www.boschdiagnostics.com/diy/products/bosch-obd-1050-mobile-scan-diagnostics
The O'Reilly link said $99.99 for my area code.
vicBosch Blurb said:Mobile Scan™ APP FEATURES
• QuickCheck™ Summary of vehicle emissions, DTCs and code definitions
• AutoID™ Automatically identify most 2000 and newer vehicles
• TrueLink™ Guaranteed to link to all 1996 and newer vehicles
• Vehicle Activity Log History of vehicle tests and procedures
• MyGarage™ Manage vehicles for easy access QUICKCHECK™ FEATURES
• Read DTCs and code definitions.
• Erase DTCs and turn off the Check Engine light.
• I/M Monitors (Emissions Status).
POWERTRAIN ENHANCED DATA – INCLUDED with Base app
• Get access to Powertrain DTCs and definitions related to the check engine light for most 1996 and newer GM, Ford, Chrysler, Honda, Hyundai, Nissan and Toyota vehicles via the manufacturer specific diagnostic command.
• Manufacturer specific code definitions for GM, Ford, Chrysler, Toyota, Honda, Nissan, Hyundai, Audi, BMW, Daewoo, Isuzu, Jaguar, Kia, Land Rover, Mazda, Mercedes Benz, Mitsubishi, Porsche, Saab, Subaru, Suzuki, Volkswagen, and Volvo.
• Freeze Frame data - Details the conditions of the vehicle at the time the DTC was set.
• View and Graph LIVE Data - View RPMs, coolant temperature, oxygen sensor readings and more for a faster diagnosis. Over 300 sensor and data items are available as supported by vehicle.
• Unlock CodeConnect® and access the most likely cause of the check engine light. Get manufacturer specific powertrain DTC fixes. (If CodeConnect ® is owned.)