04 H2 is weird

[Poppabear_093]

First the ABS and active traction comes on for no reason, I feel the pulse from the pass side front. The tight gas cap light comes on. the rear deflates "sometimes" but never when I park the car open and close the drivers front door twice (go figure) and now the radio comes on but no lights on it and the cd player is dead. WHAT DO I DO short of running it off a cliff?