The replacement of the alternator begins with disconnecting the negative
Car Batteries cable and removing the alternator drive belt. For four-cylinder models, remove the electrical connectors and the two mounting bolts. For V6 models with 3.0L and 3.3L engines, remove the electrical connectors, the pivot and lock bolts, and the alternator. On certain Lexus and Toyota models, raise the vehicle, and remove components such as the fender molding, splash shield, engine cover, battery, air filter housing, and radiator. For the 2016 and later Lexus and 2017 and later Toyota models with 3.5L, 2GR-FKS engines, remove the radiator, cooling fan shroud, drive belt, electrical connectors, wiring harness bracket bolt, and harness shield bolts. When replacing the alternator, make sure the new unit is identical to the previous one, and replace the pulley if necessary. The installation is the reversal of the removal, make sure to adjust the drive belt tension, and check the charging voltage.