On-Vehicle Inspection [08/2015 - 08/2018]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FAN & GENERATOR V BELT

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Check the belt for wear, cracks or other signs of damage.
  If any of the following defects is found, replace the fan and generator V belt.
  - The belt is cracked.
  - The belt is worn out to the extent that the cords are exposed.
  - The belt has chunks missing from the ribs.
2. Check that the belt fits properly in the ribbed grooves.
  HINT:
  
  Check with your hand to confirm that the belt has not slipped out of the groove on the bottom to the pulley. If it has slipped out, replace the fan and generator V belt. Install a new fan and generator V belt correctly.
INSPECT V-RIBBED BELT TENSIONER ASSEMBLY
1. Check that nothing gets caught in the tensioner by turning it clockwise and counterclockwise. If a malfunction exists, replace the tensioner.