What causes the abnormal noise in Volkswagen transmissions?

1 Answers
LeAngelina
07/29/25 7:57pm
Possible causes include internal friction plate failure, abnormal transmission oil pressure, or transmission valve body failure. Below are detailed explanations: 1. Use original oil: When replacing transmission oil, it is important to use the original oil, as not all the old oil can be completely drained during the change. Mixing different brands of transmission oil may cause a reaction with the residual oil, damaging the transmission. 2. Precautions: During normal use, transmission oil can deteriorate and evaporate quickly under high-speed and high-temperature conditions, failing to provide protection and instead accelerating wear on mechanical parts and damaging the transmission. Additionally, transmission oil should be replaced promptly, as prolonged use without replacement can lead to weak starts when the car is cold.
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