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Removing/Replacing the Alternator

Model: BMW Serie 5 E39 - Years 1995-2003
Part: Alternator

To remove the alternator, proceed as illustrated in the following video. First, to gain better access and more space to extract the alternator, start by removing the air filter housing. Once this is removed, you need to unscrew the power steering fluid reservoir. Remember to disconnect the ground cable, which is the negative terminal from the battery, before proceeding with the removal of the alternator. Also, disconnect the sensor on the intake hose as shown in the video. Now, unscrew the two bolts, one below and the other above, which also includes a pulley as shown in the images. Now that you have extracted the bolts, use a lever to start pulling out the alternator, but do not remove it completely yet. Disconnect the connector at the back by pressing the tab and pulling out the connector. Now, move on to the positive cable (red) that is also bolted at the back with a 13mm nut. When you reinstall the alternator, first connect the electrical cables at the back, then insert it into its seat, slightly rotating it to the right and left while pushing at the same time. Try to align the lower bolt first, then the upper one.

Updated on 9 February 2026 by ScegliAuto

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