How to Replace Serpentine Belt Tensioner 2007-2015 Mazda CX-9

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This video shows you how to install a new serpentine belt tensioner in your 2007-2015 Mazda CX-9. The serpentine belt tensioner ensures the serpentine belt stays on the pulleys and turns smoothly. A damaged or loose tensioner could result in bigger problems, especially if the belt drives the water pump in your vehicle.

This repair was done on a 2007 Mazda CX-9 Sport 3.5L Sport Utility 4-Door AWD Automatic and the process should be similar on the following vehicles:
2007 Mazda CX-9
2008 Mazda CX-9
2009 Mazda CX-9
2010 Mazda CX-9
2011 Mazda CX-9
2012 Mazda CX-9
2013 Mazda CX-9
2014 Mazda CX-9
2015 Mazda CX-9

Tools you will need:
• Door Panel Removal Tool
• Safety Glasses

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While TRQ strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. TRQ is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

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[mustangbullitt]

Can you make a video showing how to change the 2nd belt? This was very informative. Thank you.

[stanza]

What if the tensioner is stuck? On my 2014 CX9 the tensioner rotates Counter clockwise but not clockwise like it is supposed to in order to release tension.

[JONESYrugby]

9 minutes... Mazda 5....Laid out tools and replaced in 9 min.
And I dont like working on greasy cars in my hot humid helhole Raleigh gravel driveway.