What is the primary cause of automatic transmission failure?

The primary cause of automatic transmission failure being attributed to a lack of maintenance is grounded in the operational requirements of an automatic transmission. Regular maintenance is crucial for this complex system, which includes frequent fluid changes, ensuring clean filters, and checking for leaks or contamination.

Automatic transmissions rely on hydraulic fluid to operate correctly. Over time, this fluid can degrade and lose its effectiveness, leading to issues such as overheating or failure to engage properly. Routine maintenance allows for the identification of potential issues before they escalate into significant failures, enhancing the lifespan and performance of the transmission.

While factors like poor factory assembly, excessive vehicle weight, and improper fluid types can contribute to transmission problems, they do not account for the vast majority of automatic transmission failures. Regular maintenance directly addresses the wear and tear that occurs as the transmission operates, making it the primary factor in preventing failure.