LAUNCH X431 V+ 4.0 (upgrade version of LAUNCH X431 V / PRO), as the latest high-end handheld vehicle fault diagnostic tool developed by LAUNCH. Not only featuring Full System diagnostic, 20 Reset Service, but also supports ECU Coding,Key Programming, Active Test, Adaptation, Matching, Auto VIN Detect for all vehicle systems to help major maintenance and repair tasks. Allow you to reprogram adaptive data for certain components after making repairs or replacements, providing ways for the issues of Drivability, Fuel Efficiency, Power Loss, Fault Codes, Durability of Mechanical Parts. is the ideal scanner for professional mechanics and auto repair stores to perform all-around fixes and comprehensive tests.
Launch X431 PRO 3 user guide video: Throttle Adaptation on Mercedes W212 the 2014 year
Here, Following is the images of Launch X431 PRO 3 working test
Check connection
Run Launch X431 PRO 3 application
Select Europe, then Mercedes
Launch X431 PRO3 has Mercedes 48.20 software
This program diagnoses Mercedes electronic control systems, including power, chassis, body, info, seat & door,A/C, etc.
Select Automatically search
Check VIN
Read VIN code
Select System selection
ECM- Engine control module (MED40) for combustion engine M274 (N3/10)
Switch on ignition
Select Special function
Tech-in processes
Tech-in of throttle value stop
Check the engine status, accelerate pedal position, coolant temperature, and throttle
Intake temperature reach the specified values
Select F3, start tech-in process
Wait for 60 minutes, then the learning process is complete
The tech-in process was completed successfully
Job’s done!

















