Hi all,

Discovered canbus triple today. Looking to write android interface to control my vehicle.

I am a little confused about what can be controlled through the diagnostics can bus (OBD2 port). Would I need to to connect to a different can bus to control say locks or the radio? Is this car specific or am I misunderstanding something altogether?

Thanks in advance

Different cars have different CAN buses available. There are often multiple different buses. Some cars make multiple of these buses available via the OBD2 port and some don't. It's becoming more common with newer vehicles to have gateways in place in front of the OBD2 port that act as a firewall.

That being said, you can look up the details for your vehicle and find where other tap points might be (eg. behind your headunit or in other wiring locations).