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Where is the coolant bypass valve on an Audi A4?

1 Answers

DeAbigail

07/29/25 5:03pm

Audi A4 coolant bypass valve is located on the bypass pipeline. Relevant introductions are as follows: 1. Introduction to the bypass valve: The bypass valve, also known as a self-operated bypass differential pressure valve or self-operated pressure difference control valve, is equipped in every lubrication oil filtration system (engine oil) and hydraulic oil filtration system. 2. Function of the bypass valve: To ensure that the main components in the system can receive lubrication from the engine oil when the oil temperature is low or the filter is clogged with excessive impurities. 3. Precautions: When replacing the filter, never use a filter without a bypass valve to replace one that has a bypass valve.

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