The automatic transmission filter is a part responsible for removing wear particles and foreign impurities from the transmission fluid. During gearbox operation, tiny fragments of metal and friction linings accumulate in the oil. If these particles enter the valve body or oil channels, they can cause serious malfunctions and overheating of the unit. Thus, the filter acts as a barrier that protects the gearbox and increases its service life.

Where is the automatic transmission filter located

In most cars, the automatic transmission filter is placed inside the transmission oil pan. To replace it, you need to remove the pan and drain the oil. On some models, the filter is integrated into the housing, making maintenance more labor-intensive. Less commonly, you can find external filters resembling engine filters — their replacement takes less time.

Examples of locations on different vehicles

In Volkswagen and Audi, the automatic transmission filter is installed under the pan.
In Mercedes, built-in designs are often found, requiring full disassembly for access.
In Toyota and Nissan, a removable filter located under the pan is more commonly used, which is accessible during every scheduled oil change.

How often to change the automatic transmission filter

The automatic transmission filter is not designed for the entire service life of the vehicle. On average, it is recommended to replace it every 60–80 thousand kilometers of mileage, simultaneously with the oil. With intensive or aggressive driving style, the service interval is reduced. If the filter becomes clogged, the driver may notice jerks during shifts, delays in gearbox operation, and its overheating.

Summary

The automatic transmission filter is an integral component of the automatic transmission lubrication system. To briefly answer the question “what is an automatic transmission filter”, it is a protective unit of the gearbox. And to the question “where is the automatic transmission filter located” — most often inside the pan, although the exact location depends on the car brand. Timely replacement of the filter helps extend the life of the automatic transmission and avoid costly repairs.