BMW X3 wont start

[dcaron9999]

Hi Guys. My 2004 BMW X3 is sitting in my heated garage, and decided it wont start anymore. My girlfriend uses it everyday. The starter cranks and turns the engine, but it wont fire up. Checked all fuses related to ignition and fuel pump. Hooked up a battery charger for a full day. Again, the car just cranks but wont ignite. Never had this happened since I bought the X3 2 years ago. Mileage is 162,000Kms.

Any ideas where to look, or what to try? I have no OBD readers, and trying to search the internet for method to access the SIA diagnostics through the console. Will probably have it towed to a local BMW mechanic, or BMW dealership if 1st mechanic is clueless.