IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

alternator replacement

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Old Mar 23, 2026 | 01:47 PM
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Default alternator replacement

Hi guys, found out what that noise was coming from. Apparently I have a bad internal bearing in the alternator pulley that needs to be replaced. Anyone know how to do this? i can't seem to find any videos online, or should I just watch the 2nd gen videos which there seem to be much more of?
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Old Mar 23, 2026 | 01:51 PM
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also, 2014 is350 f-sport
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Old Mar 24, 2026 | 09:32 AM
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found this -
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Old Mar 24, 2026 | 09:39 AM
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yea i saw that too, i need something more in-depth
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Old Mar 25, 2026 | 07:35 PM
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seriously, no one has done an alternator replacement on the 3rd gen IS?
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Old Mar 25, 2026 | 08:35 PM
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When the alternator is buried like that it’s a pain in the *** to swap. Just take it to a shop - esp if you’re not sure about what you’re doing.
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Old Mar 25, 2026 | 10:07 PM
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Originally Posted by ScytheDC
When the alternator is buried like that it’s a pain in the *** to swap. Just take it to a shop - esp if you’re not sure about what you’re doing.
ughhh was really trying to avoid that.
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Old Mar 25, 2026 | 10:20 PM
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Originally Posted by osmosis215
seriously, no one has done an alternator replacement on the 3rd gen IS?
Nope. 2014 IS350, original alternator.
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Old Mar 26, 2026 | 03:57 PM
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Look at 2 gen IS videos pretty much the same. I’ve done it and if you’re mechanically 2-3hr process. Hardest part was the hidden bracket bolt that holds the alternator.
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