Change belts on a 2001 Infinity qx4?

To change the belts on a 2001 Infiniti QX4, first, ensure the engine is off and cool, then disconnect the battery. Remove any necessary components for access, such as the engine cover or fan shroud. Use a wrench to loosen the tensioner pulley and remove the old belts, then install the new belts following the correct routing diagram, and finally, re-tension the belts before reassembling any removed parts. Always double-check the belt tension and alignment before starting the engine.