If the cable does not specify the chipset, download drivers for both the FTDI and CH340 chipsets.
Windows 10 overwrote your driver with a generic or incorrect version. Fix: how to install vag kkl 4091 on windows 10
| Feature Area | Details | |--------------|---------| | | VAG KKL 409.1 (OBD-II to USB, used for VCDS Lite, VAG-COM, etc.) | | Compatible Software | VCDS Lite (free), VAG-COM 409.1, ProScan, etc. | | Windows Version | Windows 10 (32-bit or 64-bit) | | Skill Level | Intermediate (driver installation + COM port configuration) | If the cable does not specify the chipset,
The hardware is now ready, but your diagnostic software needs to know where to look. | | Windows Version | Windows 10 (32-bit
If everything works as expected, you're ready to diagnose and troubleshoot issues with your VAG vehicle using the VAG KKL 4091 cable and diagnostic software.
. If it says "USB Serial Port" or "FT232," you likely have an Step 2: Install the Correct Drivers