Right-click the Start button and select Device Manager.
To resolve the "VAG Tacho Interface Not Found" error, follow these step-by-step troubleshooting guides:
Select the .inf file (e.g., ftdibus.inf ), click , and accept any warnings regarding unsigned drivers.
The most common culprit is a missing or incorrect driver. Vag Tacho cables often use FTDI chips that require specific drivers to be recognized as a COM port. vag tacho interface not found full
Right-click your interface > > Port Settings > Advanced .
4. Configure Windows Compatibility and Administrator Privileges
Right-click the Vagtacho.exe file, select Properties , go to the Compatibility tab, and check "Run this program as an administrator" . Right-click the Start button and select Device Manager
Use the button to force a discovery sweep, or unplug the aftermarket radio.
Right-click your active USB Serial interface and click . Open the Port Settings tab and click the Advanced button. Look for the drop-down menu labeled COM Port Number .
: Click View at the top menu bar, then check Show hidden devices . Vag Tacho cables often use FTDI chips that
Change the assigned port to an available number between . Disregard any warnings stating that the port is currently "in use" by another software application.
The order in which you connect the hardware can affect recognition.
