I don't have to worry about SRS System, that's clear (thank God). We bought the V70 for $500 (Australian, as that's where I am), and the check engine light is on. I have done the clear trick (tap both terminal together), light goes off when you startIt depends on what kind of tool you want, and what you are going to use it for.
Lightweight, wireless, mobile phone, handheld, display ...?
OBD2 only or some Volvo specific support?