E46 Won't Crank, Won't Start Dianogsis

[JasonYew]

Facing this problem last 2 days.My car suddently won't crank and won't start at all after I never start it for 5 days.I just changed battery one month ago, so I guess battery will not be a problem.So here is my dianogsis:1) Check with OBD secret menu, Voltage 12.3V. So battery is OK.2) When turn on the key, no clicking sound of the relay, Narrow down the possible problems:a) EWS system having problem ( haiya, this one cost hand & leg)b) Starter relay or Fuse ( Hopefully is this)c) Starter loose connection.d) Stater failed.4) Key spoiled.After checking the fuse , all fuse are OK, no blown.Called mechanic, he said maybe EWS system, will come over to check for me on Monday, since today off day.So I did some research on Web, some says maybe EWS cannot recognize the key.Waiting for my wife come back, and tried with her key.Huhooooo , car started like the first day i brought it.Conclusion, my key having problem.I recall that I drop the key few days ago.So I giving some mint knock on my key, and now my key back to normal.I guess the chip in my key is back to normal now.Cost: RM 1.60 (maybe), RM 1.50 for a can of 100 plus, and RM 0.10 cent for electric bills ( my PC & internet bill)Hope this will help