Handhunter

STEP 1: Plug Bluetooth into Car's OBD Port

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It looks like this..

Car's OBD port is usually found on the driver side dashboard under the steering wheel..

Can't find car's OBD port? Locate it here.

STEP 2: Turn ON Car Ignition

This is one step before engine is powered.

STEP 3: Add and Pair ELM327 Bluetooth to Windows

Right click on Bluetooth icon in task manager > Add a Device

Select ELM327 Bluetooth device. It'll come under different names like: OBDII, OBD-II, VLink, Can OBDII, etc.

NOTE: It can take up to 15 seconds for Bluetooth signal to show.

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SIGNAL NOT SHOWING?

1. If signal does NOT show, then exit the screen. Disconnect ELM327 Bluetooth from car. Then insert it again into car's port, and do another 'Add a Device'.
2. If signal STILL doesn't show, then restart computer, and do another 'Add a Device'. Repeat these suggestions in variations until signal eventually shows. Because as long as the red Power light is lit on the ELM327 Bluetooth device, it means it's physically working, and MUST be detected.
3. WORD OF CAUTION: Any attempt to detect ELM327 Bluetooth after pairing it for the FIRST time — may NOT show inside 'Add a Device' anymore. In this case, it's found inside 'Show Bluetooth Devices'.

When you see list of pairing options like this:

(For Windows XP users, your option will be: Use the passkey found in the documentation)

Enter the pairing code:

Once it's paired, the wizard will display COM port numbers:

Write down the number of the Outgoing COM port. You will need it later to configure the OBD software.

STEP 4: Launch OBD Software and Connect to Vehicle

Launch OBD Software. (We recommend professional TOAD software which is 100% compatible with Bluetooth.)

Click 'Connect' and it should automatically detect ELM327 Bluetooth device, and connect to car's ECU.

Troubleshooting Connection Issues:

If OBD software has trouble connecting to your car, then set baud rate of connection to: 9600 or 110. Hopefully the software you're using has this option inside it's Settings. For example TOAD software has option to force 9600 bits per second, which instantly fixes random disconnection issues.
If your OBD software doesn't have option to limit connection speed, then you can also limit it through Windows settings. Here's how..

1. Go to Device Manager > and expand 'Ports (COM & LPT)'.

   Windows XP:

   Control Panel » System » 'Hardware' tab » Device Manager » Ports (COM & LPT)

   Windows Vista/7/8/10:

   Control Panel » System » Device Manager » Ports (COM & LPT)
   

2. Right-click on 'Standard Serial Bluetooth' (it may be a different name for you) > Properties
   
3. Go to 'Port Settings' tab > Lower 'Bits per second' to 110. Click Ok. As seen below. Then attempt to reconnect to your car inside the OBD software.
   

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

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