Easiest Way to Replace Your 2016-2024 Mazda CX-9 Alternator | DIY Guide

Learn how to replace the alternator on your 2016-2024 Mazda CX-9 with this step-by-step DIY guide. This video covers tools needed, detailed instructions, and safety tips to ensure a smooth and successful alternator replacement. Possible symptoms of a failing alternator include dimming headlights, electrical issues, battery warning light, and a dead battery. Save time and money by doing it yourself! Watch now for expert tips and tricks.



This video is based on 2021 Mazda CX-9 AWD with 2.5L 4 Cyl Turbo engine and automatic transmission. These instructions may apply to other model years as well.

[laloe]

Can you do a video for the thermostat?

[nickalferez]

For anyone that has to do this, you don’t need to take the wheel off or do anything front underneath the car. Everything can be done from the top. Just a little more finessing but it will save you time. Took me about 2 1/2 hours to complete from the top. Take the belt off by loosing the tensioner, take the tensioner out by removing the two bolts, and then the two bolts for the alternator. Repeat steps backwards to throw it back in.

[Auto_Junky]

Great, thorough video. Thanks for sharing!

[ceezedgerman]

Do you know if this process is the same for a Mazda 6 with the 2.5 Turbo engine?

[paul_xdp]

Curious roughly how long it took to remove and replace the alternator. Suspect our alternator is dying and want to know if this is an afternoon job. Thanks!