1. Download Elm-usb Interface Port Devices Drivers
2. Download Elm-usb Interface Port Devices Driver Windows 7
3. Download Elm-usb Interface Port Devices Driver Updater
4. Download Elm-usb Interface Port Devices Driver

A word of caution – the Bluetooth that Apple uses in iOS devices does not currently support the Serial Port Protocol (SPP). As such, iOS devices can not connect to ELM327 modules with Bluetooth – you must use WiFi with your device. AutoProPlus AutoProPlus is a free app for monitoring your vehicle with an iPhone. Stage 2: Setup the drivers. With EngineCheck and VauxCheck version 2.0 and above, the driver install for Windows XP is automatically completed when you install the software onto the machine, so you shouldn't need to manually configure it. Plug the USB cable (with interface attached) to a spare USB port on your PC. Windows Vista USB Driver Installation Interface setup is very straightforward, and comprises 3 stages: Download and install the EngineCheck / VauxCheck diagnostics software or USB device drivers; Setup the drivers.

Download the following ELM327 drivers: Driver Pack 1, Driver Pack 2

Install.

That's it.

OBD-2 software will now detect your ELM327 cable — and connect to car also. (If cable is still not found, then install Driver Pack 3.)

1. Locate OBD 2 connector.

Plug your OBD 2 Bluetooth hardware interface into OBD 2 port ensuring a solid connection. OBD 2 connector locations vary by vehicle make. Please refer to service manual to locate your vehicle's OBD 2 port.

2. Turn the car ignition switch to ON.

Turn the car ignition on. If this is the first attempt the BLUETOOTH DEVICE MUST BE PAIRED.

3. Pairing Bluetooth interface.

(NOTE: You only have 60 seconds to pair the Bluetooth scanner from the time you connect it to the car — to the time of entering the Pairing code. If more then 60 second pass — then Pairing code will be rejected and you'll have to plug out the scanner and try again. So have your Bluetooth devices window open, so you can immediately connect as soon as you see ELM327/OBDII/Unknown Device show up.)

In the upper right of the Apple menu bar click the Bluetooth symbol. Scroll down to set up Bluetooth device (You may need to turn Bluetooth 'On' first).

• In case the Bluetooth icon is not present in the menu bar, to go System Preferences » Bluetooth » and check the 'Show Bluetooth status in the menu bar' box.

4. Bluetooth Setup Assistant.

The Bluetooth setup assistant will search for devices automatically. The Bluetooth name for the ELM327 interfaces will be either 'OBDII' or 'CBT'. Or even different.

If your device does not appear, ensure the ignition is 'on' and your Bluetooth OBD 2 interface is securely connected. Verify that the OBD 2 interface is powered which is indicated by a steady red LED on the device.

Download Elm-usb Interface Port Devices Drivers

5. Passcode Settings.

After initially attempting to pair, the Bluetooth Setup Assistant should display the message, 'The pairing attempt was unsuccessful'. This indicates the pairing passcode needs to be set.

Click 'Passcode Options..' in the lower left.

6. Selecting a Passcode.

Select 'Use a specific passcode' and enter '6789'. If that doesn't work, then enter '1234'. If that doesn't work, then enter '0000'.

Click OK.

If the interface paired properly, a Bluetooth Setup Assistant window will appear confirming, 'Pairing was completed successfully' and 'A computer serial port was created'.

Click Quit.

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(Note: If the message 'A computer serial port was created' does not appear, the interface IS NOT paired properly and OBD-2 software will not connect to your vehicle.)

7. You Are Ready To Connect!

Launch the OBD software. And click connect.

If it doesn't connect, then you'll need to configure software preferences and specify which port number your ELM Bluetooth is on.

This section addresses common connection preferences you'll find in typical OBD software. So this is a short guide in case you're stuck on what settings to adjust.

1. What should I select for Serial Port settings?

If the software has 'Auto' option to detect your ELM327 automatically — then choose it because it'll cycle through all ports on your computer until it finds the port with ELM327 connection on it.

However if it doesn't find your ELM327 interface, then you'll need to set the Serial/COM port manually to the same number where ELM327 is connected.

Typical example of OBD connection preferences.

2. What should the Port Speed (bps) be set at?

The interfaces we currently ship require the 38400 (bps) setting.

3. What is Parity and what should Parity be set to?

Parity is a method for error detection in transmission. For most interfaces Parity should be set to 'No Parity'.

4. What is the 'Timeout (sec)' for?

The timeout is how long the software will wait before it gives up on hearing back from a serial port.

Some cars respond more quickly, in which case the timeout should be set for a shorter duration so time is not wasted when troubleshooting connection issues.

However, some cars respond more slowly, in which timeout should be set for a longer duration to ensure that OBD software does not prematurely terminate communication.

(Cable should NOT be connected to your laptop yet. Only connect it when instructions say so.)

Windows XP, Vista, 7:

Bought ELM327 from Total Car Diagnostics?

• Install DRIVER PACK 3.

Didn't buy ELM327 from Total Car Diagnostics?

Install all 4 driver packs below. Reason why so many to install is various ELM327's use different hardware chips. So one pack below should work.

—

If you bought ELM327 cable from elsewhere (clones, eBay, other manufacturers) then install all Driver Packs below, because they cover widest range of chip makers..

• DRIVER PACK 1
  Steps to install Driver Pack 1:
  
  • If you have 64-bit Windows, double-click on: CP210xVCPInstaller_x64
  • If you have 32-bit Windows, double-click on: CP210xVCPInstaller_x86
    

That's it!

Go to Step 2 below to test if everything is working ok..

Windows 8, 10:

Important: Any ZIP file below must be extracted specifically to Desktop. Then run the .exe file as Administrator. (Right-click > Run as Administrator)

Bought ELM327 from Total Car Diagnostics?

• Install DRIVER PACK 3.

Didn't buy ELM327 from Total Car Diagnostics?

Install all 5 driver packs below. Reason why so many to install is various ELM327's use different hardware chips. So one pack below should work.

• DRIVER PACK 1
  Steps to install Driver Pack 1:
  
  • If you have 64-bit Windows, double-click on: CP210xVCPInstaller_x64
  • If you have 32-bit Windows, double-click on: CP210xVCPInstaller_x86
    
• DRIVER PACK 4
  
• DRIVER PACK 5 ^{Most Important!}
  Steps to install Driver Pack 5:
  
  1. Please FIRST move the unextracted folder to your Desktop, else below #2 step won't show 'Install' option.
     
  2. Right-click on 'ser2pl' (icon has a little gear pic in it) and choose 'Install', as per below pic:
     
  3. Connect ELM327 cable to your laptop. Then..
     Go to: Control Panel » System » Device Manager » Ports (COM & LPT)
     You will likely see a yellow mark next to 'Prolific', like this:
     Right-click on it » Update Driver Software
     
  4. Click 'Browse my computer for driver software'.
     
  5. Select 'Let me pick from a list of device drivers on my computer'.
     
  6. UNcheck 'Show compatible hardware'.
     
  7. Select: Prolific driver version 3.3.2.102
     
  8. Install. That's it! The yellow triangle next to 'Prolific..' should be gone.

That's it!

Go to Step 2 below to test if everything is working ok..

(You can now CONNECT your ELM327 USB cable to any port on the laptop.)

Ok, we're almost ready to start scanning your vehicle.

First, let's ensure that everything is working fine!

Here's how..

Windows Vista/7/8/10: Control Panel » System » Device Manager

Windows XP: Control Panel » System » 'Hardware' tab » Device Manager

Notice any device with any one of the following names:

1. FT232R USB UART
2. Prolific USB-to-Serial..
3. USB Serial Port
4. USB2.0-Serial
5. Silicon Labs CP210x USB to UART Bridge

NONE of above devices should have a yellow mark () next to them.

If none of the above has a yellow mark, then congratulations! You're ready to begin scanning your car(s). Click here on how to connect to your car in the next 5 minutes..

If any one of above devices has a yellow mark, then:

1. Right-click on that device » Uninstall
2. Unplug cable
3. Restart PC
4. Download and unextract DRIVER PACK 6
5. Double-click on 'InstallUSB' to install
6. Connect cable to laptop. Yellow mark should now be gone. Success!
   If yellow mark is STILL not gone after doing 1-6 above, then do this:
   

   a) While cable is plugged in, right-click on device with the yellow mark.
   b) Click on: Update Driver Software
   c) Choose: Browser my computer for driver software
   d) Browse to and select folder where you unextracted Driver Pack 6. Make sure 'Include subfolders' is ticked ON.
   e) Click on: Next
   f) If you get RED warning, choose: Install this driver software anyway
   g) After it installs successfully, another yellow mark may appear under 'Other Device'. Eg:
   h) If g above is true, then do steps a-f for 'Unknown Device'. It may also show as 'COMx'.

Even DRIVER PACK 6 didn't help? Then likely it's a 'Code 10 error' next to 'Prolific USB-to-Serial' device. Click here to fix that.

Even 'Code 10 error' fix didn't help and yellow mark () is STILL not gone? Go to Troubleshooting below.

Step 1: Install your OBD2 software (if you don't have it — checkout TOAD OBD software). Do NOT launch it yet.

Step 2: Connect ELM327 USB to your computer and car's OBD port (usually underneat dashboard/steering wheel).

Step 3: Place the key in the ignition and turn it forward to 'ON' position. (Position where all dashboard lights are on. This is one position before engine starts.)

Step 4: Start your OBD diagnostic software. Click 'Connect', and it should auto-connect to your vehicle. That's it!

TIP: If you want maximum data reported from the car — turn on the engine.

Yes, you can safely drive the vehicle while ELM327 is plugged in and application is monitoring car's data. Keep eyes on the road at all times.

Common Solutions:

If you're unable to connect successfully to your car, then that's because of 2 reasons:

1. Your vehicle is notOBD2 compatible.
   
2. Random issues that can be fixed with below solutions..

Here are solutions in recommended order:

1. First check that ELM327 is physically working (not defunct). When you plug in the cable into a USB port, all the lights on ELM327 interface/device should flash. And then it'll return to 1 red light (power).
   Condition of a defunct ELM327 interface: All lights will not initially flash, and only red light will be on.
   
2. Restart computer (while keeping cable connected to laptop). Try again.
   
3. Plug USB into different physical port of your computer. Try again.
   
4. If all above solutions fail, then we will help you (only if you are Total Car Diagnostics customer). Here's all you need to do..
   

   Drivers acrsys laptops & desktops. Connect ELM327 USB cable into laptop. (Don't need to plug the other end to car)

   Step 1: Go to Control Panel.

   Windows Vista/7/8/10: Control Panel » System » Device Manager
   Windows XP: Control Panel » System » 'Hardware' tab » Device Manager

   Step 2: Expand 'Ports (COM & LPT)' and 'Other Devices'.

   Step 3: Take picture of the screen (Press 'Print Screen' key on the keyboard then paste into any graphics program. Or take shot with camera/phone.)

   Step 4:Contact us and attach the picture.

Free Software To Test If ELM327 is Working with Windows and Vehicle..

Download Elm-usb Interface Port Devices Driver Updater

Step 1: Install EasyOBD. Do not launch it until Step 4 below.

Step 2: Connect ELM327 USB/Bluetooth to laptop and car.

Step 3: Turn on car ignition. (One step before engine turns on)

Step 4: Launch EasyOBD. It will automatically connect.

If first 5 lines are GREEN — then ELM327/Windows is 100% installed correctly. In this case, can get TOAD pro software.

If any of the first 5 lines are RED — then OBD2 scanner won't work on your car. Rather take it to mechanic.

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Download Elm-usb Interface Port Devices Driver

• ELM327 AT Commands: List of commands you can manually type into OBD software terminal.