Topic: How to change OBDLink Bluetooth PIN/code/passcode/password/keyword?

[lkaestner]

I just bought an OBDLink Bluetooth (HW: 2.7, FW: 2.2.2) and now want to change the default (1234) Bluetooth password to an individual one.
As my car reacts very sensitively to some commands, I want to strictly avoid that someone else to fiddles with the ECU while I'm driving.
I have access to the OBDwiz console and would appreciate a written turotial or the corresponding sequence of commands. Thank you!

[Kaycie]

You can refer to the following datasheet that will explain how to change the passkey for the bluetooth module.

Roving Networks BT User manual

Page 5 section 3.2 will explain how to connect via hyperterminal and pg 10 has the command you will need to change the pass code.

[lkaestner]

Thanks, it worked fine.
The procedure was:
 - plug the ScanTool into the OBD port and switch on the engine
 - pair OBDLink and computer via Bluetooth
 - open Tera Term and connect to the ScanTool via the COM port
 - in Tera Term -> Setup -> Terminal, change receive to CR+LF and enable local echo
 - to switch to command mode, quickly type $$$ - this has to happen during the first 60 seconds after plugging the ScanTool into the OBD port
 - to change the PIN code, type "sp,123456789" (the new PIN) and press enter
 - to reboot the ScanTool, type "r,1" and press enter
 - unplug the ScanTool and re-pair with the other bluetooth devices - done

[Jason Smith]

Thank you