Right-click your BMW Scanner desktop shortcut and select .
: Provides a comprehensive look at the software's functional capabilities, including reading/clearing errors and coding modules. How to Install BMW Scanner 1.4.0 on Win 7 (Slideshare)
Modern Windows 10 and 11 operating systems require digitally signed 64-bit drivers. The software package included on the mini-CD with your scanner usually lacks these signatures, causing Windows to block installation.
After installing the driver, many users launch the software only to face a frustrating prompt: . This issue occurs because the software is looking for the cable on an unassigned or incompatible virtual communication port (COM Port). To fix this connection barrier, follow these steps: Open Device Manager again with the scanner plugged in. bmw scanner 140 drivers
You must manually force Windows to use an older, unsigned, or specific modified driver package designed for the Pasoft hardware.
Remove the four small screws holding the plastic casing of your BMW Scanner 1.4.0 cable together. Locate the circuit board where the OBD2 pins are soldered. Find the pins clearly labeled and 8 .
Go to > Advanced options > Startup Settings > Restart . Right-click your BMW Scanner desktop shortcut and select
Hold down the while clicking Restart in your Windows Start Menu.
The key takeaways are:
| 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. | The software package included on the mini-CD with
You must bridge pin 7 and pin 8 inside the scanner. Alternatively, if your BMW was built before 2001, you cannot use the OBDII port inside the cabin for advanced module coding; you must purchase a 20-pin to 16-pin round diagnostic adapter cable and connect the scanner to the diagnostic port under the hood. 3. Drivers Disappear After a Windows Update
: While this method often works, some 64-bit systems may have issues. In that case, it's recommended to manually download and install the latest FTDI driver from the official website, as it provides better compatibility. Use the same manual update process through Device Manager, but browse to the location where you downloaded the FTDI drivers.