Is the CVT Transmission Prone to Water Ingress?

[JoannaRose]

It is prone to water ingress. Automatic transmissions, regardless of the vehicle model, are equipped with a radiator. The radiator's design inherently involves one side for oil and another for water, which normally do not interfere with each other. However, over time, the water side can gradually corrode due to scale buildup. Once the corrosion reaches the oil side, water will enter the transmission. Below is relevant information: 1. Severe Water Ingress: If the transmission has significant water ingress, it can be directly observed by draining the oil. The specific method involves draining the transmission fluid; if there is substantial water ingress, the color and viscosity of the oil-water mixture can be assessed. 2. Moderate Water Ingress: If draining the oil does not confirm water ingress, further inspection is necessary. This involves removing the oil pan for observation. 3. Minor Water Ingress: If the above methods fail to determine water ingress, disassembling the transmission to inspect internal screws is required.