The positive port has a black piece that looks like somethng electrical. Anything i need to know about removing this when i change my battery? Any other things i should know about removing and replacign the battery?
Thanks in advance!
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Re: Changing battery on a 2004 bmw 325ci
Hello, There's nothing special to watch for, just don't damage anything physically. What you need to do is only to unscrew everything, replace the battery and screw it all back as it was. Maybe only to watch that you don't unscrew some parts all the way, only as much as you need to release it, so you don't loose the screws. Believe me I know - I work in a factory that produces the whole electrical system for BMW 3 Series ;) Anyway, here I found a detailed instruction with pictures: http://reviews.paonet.org/20070221-Duralast_49-DL/index.html
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The battery for your car is located in the trunk. There are jumper terminals located under the hood in the front of your car. There is a Red (+) terminal that is under a little black cover on the passenger side of the engine bay near the firewall. Right near that is a silver/gray bolt that is bolted to the frame of the car. This is the negative terminal.
Make sure both cars are and all accessories are off: 1) Connect the Postive cable to the dead battery 2) Connect the Positive cable to the good (BMW) terminal 3) Connect the Negative cable to the good (BMW) terminal 4) Connect the Negative cable to the dead battery 5) Start the BMW. (if you have 2 people then gently rev the engine) 6) Start the dead car. 7) Let both cars idle for a while before disconnecting any cables 8) Remove in the opposite order.
disconnect the negative battery. remove the belt by rotate the tensioner roller clockwise. from the left car side u will see three hexagon screw 13mm under the altenator. loose out the screw and remove the altenator. before that unplug the two wire behind the altenator.tq
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