It all started when someone ripped my passenger window off. Got it replaced, not at a bmw shop, and ever since my display screen would always saty on even when I turn the car off. I didnt drive for about a week came out to start the car and it was dead. I tried to jump it with a small jump kit device however, when I plug it up the lights, radio, etc comes on but it will not start. When I turn the key it clicks rapidly and the lights dim with the clicks. Also while the jump kit is connected I cannot blow the horn. When I press the horn the lights just dim. Is this the alternator, I really hope not, or does it sound like I need to just replace the battery.
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Re: 2002 BMW 740i will not start
Take your battery to the parts store and have them test it. If its an original replace it anyways batteries only have a 5 to 7 year life span. on another note when your window walked off they may have damaged a switch in the door. this may be causing your display issues.
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Shawnna: I like to start simple so I would pull the lens of the tail light and check and probably replace the light bulbs. Naturally, it could be a short or a fuse problem, but that is the most logical place to start.
you replace it, you do not repair it. your problem is that most parts stores carry only high volume rebuilts so you may play hell finding a rebuilt/exchange part for a BMW. there is a certain price to pay for owning such things and this is part of it, also many repair shops may not want to touch it even if you provide the part. However I am sure someone out there sells these parts, do a google search. Then i would find a foreign auto repair shop and pay them to put it in.
I don't have a diagram for you however I do have some sound advice. If you have never changed out a window regulator, you don't want to start learning with a BMW. Believe me you will rip most of your hair out by the days end and you'll rip a lot of skin from your hands and arms. There are too numerous little tricks and rules to follow for me to list. Trust me when I say, bring it to your favorite mechanic, it doesn't have to be a dealer, but, you do not want to undertake this project.
All i can give you is a good place to start. The transmission control module- It is behind the bottom panel that houses the speaker on the passenger side (by your feet) it could be loose or it could be shorted. Also check if there is an aftermarket security system. These mess with the whole electrical system.