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2002 BMW 745Li Questions

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I was vacuuming the car out one day and then I just didn't start car seems to not be getting fuel already change the relay battery is fine... I don't get it. Can someone help?
I was told I need a fan motor for my bmw
Blowing out hot air from the air conditioner and defrost on the coldest
It happens often
I was driving on the highway, then the oil light came on, I went about 3 more miles to the next exit because it was dark and rainy I could not pull over on the highway, and almost made it to a lot when the car shut down. I went into the hood and oil was all over the place. no coolant leak at all. just oil on the engine. tried to start but didn't start, tried to turn over then when I tried starting too many times battery started to die. car never over heated, no coolant on the engine. is it possible car went into some safe mode, computer wise? car also will not come out of park into neutral.
I put the right grad but from a off brand service station an my car started running very bad after I can smell raw gas I have these cods 363. An 1347
I have a warning light that says "Dynamic Drive is not activated. The car seems to be stuck in 1st or second gear
Dynamic drive inactive turns on I took it to a shop they told me it needs software update what causes this and how do I remove it

No changes are made and tells me all this avriado . It also says that the car is tilted.
the message on the dash is power reduction.
what would make the cars electrical system go crazy cars battery wont stay charged all the lights on the dash around and windshield wipers just keep going don't stop could it be the alternator
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