How to Replace an Alternator Toyota Lexus V6

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Here's how to replace an alternator on a Toyota or Lexus with a V6 engine.


An alternator provides a means to charge the car's battery and supply electrical demand to a car's electrical subsystems. When an alternator fails, the battery dies and the electrical load can no longer be supported. The alternator must then be tested and then replaced.


To test an alternator, make sure the battery is giving 12+ volts without load. Start the car and measure the voltage across the battery terminals, it should be 14.6V. Slowly turn on all the accessories on the car (lights, stereo, HVAC, wipers, etc) and watch the voltage drop. It should sustain more than 13V.


In this video, the alternator is removed from a Toyota 1MZ-FE engine. It involves the removal of the alternator / A/C accessory belt, held on by two pinch bolts and a tensioner bolt. Once electrical connections are removed, the alternator can be wiggled through the A/C compressor flexible line out of the engine bay to be rebuilt or replaced.



Learn more on how alternators work in this video:



Learn how to replace an alternator on a newer Toyota/Lexus with a longitudinally mounted V6 engine here:




Get your replacement alternator here:
(US)
(Canada)
Basic 3/8" Socket set:
(US)
(Canada)
Multimeter for testing voltages:
(US)
(Canada)


This is the Camera I use:
(US)
(Canada)

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