What does it mean when the WIF light in a car is on?

[BraxtonFitz]

The illumination of the WIF light in a car indicates excessive water content in the fuel filter, which may be caused by a malfunction of the related sensor. Below is relevant information about the automotive fuel filter: 1. Definition of fuel filter: The fuel filter is one of the "three filters" commonly used to remove impurities from automotive fuel. 2. Classification of fuel filters: They can be categorized into gasoline filters and diesel filters based on the type of fuel, and are considered wear parts that require regular cleaning and replacement. 3. Replacement interval for fuel filters: Under normal usage conditions, fuel filters must be replaced every 30,000 kilometers. If the fuel contains a high level of impurities, the replacement interval should be shortened accordingly. Generally, it is recommended to replace the fuel filter every 20,000 kilometers. For the optimal replacement timing, please refer to the instructions in the vehicle's owner's manual.