Many thanks for trying my changes to libobd and I'm pleased they worked for you . I've made a few more changes and I've almost fixed my problem where my Bluetooth OBD only connects every other time - I'd be most grateful to you if you could try this version out too in order to check that I haven't undone what I ddi to make it work for you (since I've also tried to do one or two things to hopefully make the Bluetooth OBD connection happen a little more quickly). Sophie x