Bmw Scanner 140 Drivers -
Some sellers include a mini-CD with drivers. These work but are often unsigned. You can find ISO images on BMW forums like E46Fanatics or Bimmerforums in the diagnostic subforum. Look for a folder named "USB Driver" or "Driver Win7/8/10".
⚠️ Caution: Many “BMW Scanner 1.4 driver” downloads from forums contain malware. Only download from trusted sources.
Recommended sources:
Typical driver file names:
If the software still does not connect to the car:
Most BMW Scanner 1.4.0 cables use the FTDI FT232RL chip.
Even after installation, problems occur. Below is a troubleshooting table.
| Symptom | Likely Cause | Solution | |---------|--------------|----------| | "Interface not found" in PA Soft | Wrong COM port or driver conflict | Force COM port to COM1-4 in Device Manager > Advanced | | Yellow exclamation mark in Device Manager | Counterfeit FTDI chip blocked by new driver | Downgrade FTDI driver to version 2.12.24 or use Zadig tool to install libusb | | Driver installs but car connection fails | Baud rate mismatch | In Device Manager, change baud rate to 9600, 8 data bits, 1 stop bit, no parity | | Windows keeps overwriting driver | Automatic driver updates enabled | Go to System Properties > Hardware > Device Installation Settings > "No" | | Scanner works once then disappears | USB selective suspend | Disable USB selective suspend in Power Options > Advanced settings |
Installing the driver is only half the battle. The software itself often needs to be told where the license is.
"Hardware not found" Error
"Error opening port"
Yellow Triangle in Device Manager (Code 10 or Code 39)
Cable LED Light *
Getting Your BMW Scanner 1.4.0 (PA Soft) Running on Windows 10/11
If you’ve recently picked up a BMW Scanner 1.4.0 (often called "the Bobcat" or "PA Soft"), you’ve likely realized the included disc is basically a coaster. Getting the drivers to play nice with modern 64-bit versions of Windows is the biggest hurdle, but it is entirely doable with a few manual steps. 1. The Driver Dilemma The scanner uses an
to communicate via USB. Modern Windows versions often automatically install the latest FTDI drivers, which unfortunately can "brick" or ignore the older clones used in many cheap BMW scanners. You need the specific x64 D2XX drivers . Many enthusiasts recommend using the FTDI Chip D2XX Drivers
directly or finding the "patched" version common on forums like Bimmerforums 2. Bypass Driver Signature Enforcement
Windows 10 and 11 won't let you install "unverified" drivers by default. You have to temporarily lower the gates: Method A (CMD): Run Command Prompt as Admin and type: bcdedit /set testsigning on , then restart your PC. Method B (Advanced Startup):
Go to Settings > Recovery > Advanced Startup. Upon restart, choose bmw scanner 140 drivers
Troubleshoot > Advanced options > Startup Settings > Restart to "Disable driver signature enforcement". 3. Manual Installation (The Critical Step)
Don't use the "Setup.exe" that comes with the software. You must do this through Device Manager
Plug the scanner into your PC (it doesn't need to be in the car yet). Device Manager
. Look for "BMW Scanner" or "Unknown Device" with a yellow exclamation mark. Right-click it and select Update Driver Browse my computer for drivers
Point it to the folder where you extracted the 64-bit drivers.
If it still fails, select "Let me pick from a list," click "Have Disk," and manually select the file from your driver folder. 4. Avoiding the "Hardware Faulty" Error
The most common mistake is trying to run the software while the scanner is only plugged into your laptop. Connect to the Car First:
You must plug the scanner into the car's OBDII port (or the 20-pin under-hood port for older models) and turn the ignition to position 2 before opening the software.
If you get a "Hardware Faulty" message, the software isn't seeing the 12V power from the car. 5. Final Hardware Tweaks Some sellers include a mini-CD with drivers
Many of these scanners require a small physical modification to work with certain models (like the E46 or E39). If you can only see a few modules (like DME or EWS) but others are red/missing, you likely need to solder pins 7 and 8 together
inside the scanner plug. This bridges the two K-lines required to read all the car's modules. Was this guide easy to follow? Installation steps Driver links
BMW scanner 1.4 installation tutorial for Windows 10. (PA Soft)
Because this hardware uses an older chipset, getting it to work on modern Windows computers (Windows 10 and 11) is notoriously difficult.
Here is a useful guide on how to identify your hardware, find the correct drivers, and install them.
Modern Windows operating systems do not automatically recognize vintage diagnostic interfaces. The BMW Scanner 1.4.0 typically uses one of two USB-to-serial chips:
If you plug the scanner into a Windows 10 or 11 PC, it will likely show up as an "Unknown Device" or "USB Serial Converter" without proper function. The BMW Scanner 1.4.0 drivers bridge the gap between the hardware and the PA Soft software, creating a virtual COM port that the application can access.
Critical note: Using Windows Update or automatic driver search will often install the wrong version (e.g., a generic CDC driver) that will fail to communicate with the car.