ive had my d2 for over a year now and i just recently did the bypass on it it was working for like 2 weeks and then sat night my battery died and when i jumped my car the d2 wouldn't work it would not even turn on then yesterday i got it to work but then it died again while i was driving idk what could be the problem any help would be great thanks

Check all your power/ground wires to make sure none of tem have come loose.

what doesnt work your hack or avic?

if avic it prob needs new fuse

if bypass hack u prob got loose wires