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Which generation is the Aisin TF71SC transmission?

4 Answers
McLiam
07/29/25 11:47am

Aisin TF71SC is a third-generation transmission. Function of transmission: The transmission is used to change the speed and torque from the engine, and can fix or separately change the transmission ratio of the output shaft and input shaft as an automotive component. Composition of transmission: The transmission consists of a gear transmission mechanism and a control mechanism, and can be classified into stepped, continuously variable, and integrated transmissions. Functions of transmission: With the engine speed and torque unchanged, the transmission can change the driving force and speed of the vehicle; enable the vehicle to reverse; and allow the engine to stop without stalling.

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Alessandra
08/13/25 8:39pm

I usually focus on researching automotive powertrains, and the Aisin TF71SC transmission belongs to the third-generation product. As a 6AT transmission for transverse platforms, it has been used in models from Peugeot, Citroën, and even some Volkswagen vehicles. The most notable feature of the third generation is the optimized torque converter and planetary gear set structure, reducing shift delay by about 20% compared to the second generation. I recall this generation of transmissions started being installed around 2008, addressing the occasional jerking issues during cold starts in older models. Although Aisin has now progressed to the fifth generation, the TF71SC's reliability still enjoys a good reputation in the used car market.

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SophiaAnn
10/08/25 6:37am

My old 408 is equipped with the TF71SC transmission, and I specifically researched its details. It belongs to Aisin's third-generation automatic transmission, which adds a manual mode switching function compared to the previous generation. The most practical feature of this generation is that it automatically learns driving habits even in regular D mode, making gear shifts noticeably smarter than the old 4AT during traffic jams. During a maintenance visit, a technician mentioned that this generation's housing is over ten kilograms lighter than the second generation, and the oil circuit design is more reasonable, making it particularly durable. However, it's important to change the transmission fluid regularly—a friend's car ran 150,000 kilometers without a fluid change, resulting in a clogged valve body and a 3,000-plus repair bill.

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LaSavannah
11/21/25 7:56am

Having repaired cars for twenty years, I've handled countless Aisin transmissions. The TF71SC model is clearly a third-generation product with the internal code AWF8F35. Compared to the second generation, its valve body solenoids have increased from 6 to 9, resulting in significantly improved control precision. It's commonly paired with 1.6T engines, and the oldest one I've repaired needed an overhaul only after running 280,000 kilometers. The key maintenance point is using the correct fluid—only transmission oil with LT71141 certification should be used. Last time, an owner mistakenly used GL4 gear oil, which caused slipping. This generation of transmissions has a very low overall failure rate, with only occasional minor issues like sticky shift cables.

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