This. Step 1 open doors. Step 2 replace battery. On a BMW if your battery doesn't last 5-7 days without starting the car it needs to be replaced. If there is some battery, you could try holding down the unlock button or turning the key to unlock to roll down the window.

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2004 X5 3.0i - Sold
1998 328i Convertible (e36) -sold
2004 325xi (e46)- sold

Any questions?: DICE mediabridge|gauge rings|LED Angel Eyes|front door carrier|GT1/DIS/INPA/NCS|bluetooth retrofit|SIRIUS Retrofit|fuel filter|Dorman DISA|Roof Rack Delete|Sunroof drains|AC drains|rear sway bar swap|o2 sensors|VCG|Osram Night Breakers