Extract the contents of your download or CD into this new folder.
VAG Tacho 5.0 is a powerful tool that accesses the EEPROM of your vehicle's instrument cluster. Always click and "Save File" before making any changes. This creates a backup. If something goes wrong during a write process, you can flash the original file back to the car to avoid "bricking" the dashboard. If you'd like, I can help you find: The compatibility list for specific car models Instructions for programming a new key once installed Where to download certified drivers for Windows 10/11 how to install vag tacho 50 extra quality
Choose and point the search to the "Drivers" subfolder within the VAG Tacho folder you created in Step 1. Extract the contents of your download or CD
Repeat this process if a second device (USB Serial Converter) appears in the list. Step 3: Configuring the Interface This creates a backup
Ensure the COM port in the software matches the COM port in Device Manager. Try a USB 2.0 port instead of a USB 3.0 (blue) port.
Look for an item under "Other Devices" labeled "USB Serial Port" or "VAG Tacho" with a yellow exclamation mark. Right-click it and select .
Plug the OBDII end of the cable into the vehicle's diagnostic port (usually under the dashboard).