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pull the metal key from your key fob and open the driver door stick the key in the slot and press the start button, very possible the car gives you a red or yellow warning symbol in the dash *as car on the lift*... and a WORD, the word could be alternator , stater or battery ! call a tow truck and send it to a BMW mechanic shop...don't try nothing else.

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Q: How do you open the car when key is not working for BMW 745i and when car battery is dead and doors will not open from outside?
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