Navigate to: > Advanced options > Startup Settings > Restart .
Turn the vehicle's ignition key to (Dashboard lights on, engine off). Launch the BMW Scanner software.
To bypass this, you must manually force Windows to use compatible, modified FTDI drivers and temporarily bypass driver signature enforcement. Step-by-Step Driver Installation Guide bmw scanner 140 drivers
Before installing drivers, check the USB cable itself. There are two main versions of the hardware, and they require .
Step-by-Step Guide: Installing BMW Scanner 1.4.0 Drivers on Windows 10 & 11 Navigate to: > Advanced options > Startup Settings > Restart
: Download the latest D2XX drivers directly from the FTDI Chip official website .
Hold down the while clicking Restart in your Windows Start Menu. To bypass this, you must manually force Windows
A: Unfortunately, no. The BMW Scanner 1.4.0 does not have the capability for battery registration or coding of most modern modules. It can, however, reset some adaptations, which can be useful after performing maintenance on an older BMW.
✔ Correct driver installed (CH340 or FTDI) ✔ COM port identified in Device Manager ✔ Baud rate set to 9600 in software ✔ Ignition ON (dashboard lights) ✔ Scanner software running as Admin ✔ Car battery voltage above 11.5V
: Ensure the scanner is plugged firmly into the car's OBD2 port and turn the vehicle's ignition key to Position 2 (dash lights on, engine off) before opening the software on your computer. Troubleshooting Common Driver Issues Driver Signature Enforcement Bypass
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | The scanner is not receiving power from the vehicle. | Connect the adapter to the car and turn the ignition to position 2 (KOEO – Key On, Engine Off) before running the software. | | Driver signature error | Windows blocks the installation because the driver is not properly signed. | Temporarily disable driver signature enforcement by rebooting your computer and selecting the Disable Driver Signature Enforcement option from the advanced startup menu. | | Windows overwrites the driver | Windows Update automatically replaces your working driver with a newer version. | In Device Manager, open the Properties of the COM port, go to the Driver tab, and select Roll Back Driver if the issue started after an update. You can also hide the problematic update using Microsoft’s “Show or hide updates” troubleshooter. | | Connection errors to specific modules | The adapter may have a hardware fault. | For some cheaper adapters, shorted pins on the internal board can cause module‑specific connection errors. If you are comfortable with a soldering iron, check the integrity of the solder joints on the adapter’s PCB. | | “Connection error with IKE” or “EWS” | The software cannot communicate with the instrument cluster or immobiliser module. | Ensure the ignition is on and that all connections are secure. Try unplugging and replugging the USB cable, then restart the software. |