How to use Launch X431 V Pro 4.0 to make coding changes
Launch X431 V+ 4.0 supports ECU Online Coding & Variant Coding. This article will introduce how to use Launch X431 V Pro 4.0 to make coding changes. Plugin X431 into OBD 2 Port, Turn Key to Accessory Mode and then Select Intelligent Diagnose — check out this link for video on OBD 2 port location. Then select Diagnostic Then select System Selection Then select the appropriate System for the Code you want to adjust. Note: This is the system listed in the pictures such as Front-end Electronics, Rear-End Electronics, Instrument Cluster or Air Conditioning. Then select Code/Brush Hiding Then select Brush Hidden/Modified Then find the Code you want to adjust (These are the Codes in the instructions below). Then Make the Change. Then Hit the Write Code Button.