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Replacing the Car Alternator

Model: Audi A4 B6 - Years: 2000, 2001, 2002, 2003, 2004
Part: Alternator

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Video tutorial

The alternator is one of the most important parts of a car's electrical system. It must always be perfectly efficient, as a malfunction could cause serious problems for the battery.

Replacing it requires some manual skill. The following guide shows you how to do it. Park the vehicle on a flat surface in a safe location, turn off the engine, and disconnect the battery cable corresponding to the negative terminal to avoid accidental sparks.

At this point, locate the alternator and take a few minutes to memorize its position relative to the other parts. You will see a belt that goes over the pulley connecting to the alternator.

Choose the correct size wrench and remove the belt that secures it to the engine block. Unscrew all the screws that hold the alternator, and rotate the belt tensioner by loosening the tensioner bolt.

The rotation should be minimal, just enough to slide the alternator out.


Updated on 22 February 2026 by ScegliAuto


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