I just found out 2009 C70's computer monitors stop lights, turn lights, etc. and when any of those are out, it will tell you by showing a message.

I also found if you replace any of those lights with LED version, the computer still tells you they are out!

If Volvo can make their cars this smart, why can't they make them recognize LED lights?

I think they set the threshold too high so LED light won't trigger it because they draw very low current so I have to wait until another firmware update to solve this problem.