BMW Questions? Ask a BMW Repair Expert for Answers.
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by far the most likely cause is a failure of the starter
this is very common on your engine and would require the starter be replaced.
other possibilities would be a faulty key (try a second one), a faulty brake light switch, transmission switch or immobilizer/car access system issue
if you have not tried a jump start that would certainly be worth trying. also try starting in park and neutral, make sure the shifter is fully in park, also lock/unlock the doors mecanicall a few times, unhook the battery for an hour to reset all systems, and check EVERY fuse
however, you will most likely need to have the car towed for a replacement starter
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you.