Ribbed Belt, Checking: Procedure
WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
-- Turn the engine by the vibration damper/belt pulley using a wrench.
-- Check the ribbed belt for:
- Cracks in the underside (surface cracks, fragmenting, cross-section breaks)
- Layer separation (outer layer, tension cords)
- Wear-through on the underside
- Fraying of tension cords
- Edge wear (material wear, frayed edges, hardened edges, glazed edges, surface cracks)
- Oil and grease traces