How to Change the Serpentine Belts on a Mazda CX9 3.7L V6

How to how to change both serpentine belts on a first-generation Mazda CX9 equipped with the 3.7L V6. This engine is also found in other Ford and Lincoln models from the same generation. This is a 2015 model. A squeaking is an indication of the belt slipping, therefore it’s stretched. I would recommend replacing both and also checking the tensioner to ensure it’s not requiring a replacement as well. The tensioner can fail by not providing sufficient tension or having the pulley bearing fail. A pad tensioner will typically not allow the belt to tighten and potentially bounce when the engine is running. Tools/Supplies Needed: -new serpentine belt -new stretch belt -cable ties -long screwdriver -phillips screwdriver -adjustable wrench -10mm socket with ratchet -jack and jack stand -21mm socket Procedure: Elevate the vehicle, we are required to remove the passenger side wheel. Remove the hubcap, then I can access those lug nuts. The lug nuts are 21 mm. Remove the wheel. Use a jack stand under the subframe as a safety. There is a plastic cover that is required to be removed to gain more access to the serpentine belt. Four clips need to be removed. A Phillips screwdriver is required to unscrew the center portion of the clip. Once done, either try to pull the clip out or pull the cover out. Next the coolant reservoir needs to be unbolted and pulled off to the side. Three 10mm bolts hold this in place. Push it over towards the engine. Do not disconnect the coolant lines....