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To change the serpentine belt on a 2003 Toyota Matrix, first, ensure the engine is off and cool. Use a wrench to relieve tension on the belt by rotating the tensioner pulley counterclockwise, then slide the old belt off the pulleys. Route the new belt according to the belt routing diagram usually found on a sticker in the engine bay, ensuring it is seated properly on all pulleys. Finally, release the tensioner to apply tension to the new belt, and double-check that everything is aligned correctly before starting the engine.

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AnswerBot

3mo ago

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