Navigate to the folder where you downloaded the drivers (CH340 or FTDI). Click and allow Windows to install the driver.
If you already have a problematic cable, try using software (not newer VCDS) with the COM port set to 1–4 (some versions refuse higher COM numbers). vag kkl 409.1 driver windows 10 64 bit
Right-click your newly recognized USB Serial Port (FTDI or CH340) and click . Navigate to the folder where you downloaded the
Windows 10 does not natively recognize older VAG KKL 409.1 interfaces (used for VCDS Lite, VAG-COM, or diagnostic software like FTDI-based cables). Drivers must be installed manually. Right-click your newly recognized USB Serial Port (FTDI
If you’re adventurous, you can add a physical switch to toggle between pin 7 (K-line) and pin 6/14 (CAN high/low). This requires soldering and an extra CAN transceiver (MCP2551). Not for beginners.
After restarting, select .