I've been trying to tint the side windows today. Had the key on to roll down/up the windows to do it. Seemed like I ran down the battery during this and when I went to start the X, it was dead...... At first I hooked up the battery charger, but when I went to start... all I get was the car alarm.... I switched to battery cables from my 2500HD... and I still get the alarm.... The nav screen is asking for a code .... that I know nothing about... Please help....

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2005 X5 4.4 Sport, Black/Tan, Loaded

1997 M3 Sedan, 6speed, Turbo, 600whp