Question about 2003 Lexus ES 300

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How do I replace the alternator on a Lexus ES300 2003 model. Having trouble figuring out how to get belt loose.

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There are 2 bolts for the alternator, they will be pointed toward the passenger wall inside the hood. The bottom bolt runs through a little black piece before it bolts into the alternator, on the side of the black piece that faces the front bumper (would be facing you if you were standing in front of the car working on it), there is another bolt which when you loosen it, it releases the tension on the belt.

Posted on Jul 27, 2012

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Belt is loosened by pivoting a tensioning pulley arm on most newer vehicles, it should be marked on the diagram in your engine compartment of belt routing. Many have a square hole for a breaker bar or ratchet to fit for leverage, if not try a box wrench on the pulley mounting bolt, some can be moved by hand. Alternator R&R is un hook wires and unbolt from bracket/mount. Serpentine belt life is approximately 100,000 mi; you may want to replace

Posted on Oct 03, 2010

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