Welcome to Bimmerfest! I moved your question to the E46 (1999-2006 3 Series) forum, where you should get some help.

 

Have you been getting the yellow oil light on startup?

 

No crank no start

Was driving all lights came on,lost power could not go into reverse thought it was alt but just barely made it home found that disa was loose and rattling .it never started after i barely made it home went in limp mode. Replaced alt all abs sensore thermostat power stering pump. When trying to start all light work except gear indicator on dash board. If i put it in s mode s will appear ? Attempting to start it, fuse # 30 blows using scanner c100+ under dtc e50 power supply 70 seat occpancy detector. Also few weeks ago water got into right front passenger dashboard. Could this be causing a power supply code? Turning the key i hear the fuse click ? Dash lights all functional.