What are the symptoms of a faulty transmission computer?

1 Answers
VonMatthew
07/30/25 4:28am
Transmission computer failure symptoms include the transmission being unable to shift gears normally, rendering the vehicle undrivable. Only vehicles equipped with automatic transmissions have a TCU (Transmission Control Unit), while manual transmission vehicles do not. The TCU acts as the brain of the automatic transmission, collecting data through various sensors and controlling gear shifts via actuators after processing. There are three common types of automatic transmissions in vehicles: CVT (Continuously Variable Transmission), dual-clutch transmission, and AT (Automatic Transmission). The transmission, also known as a gearbox, is an automotive component designed to alter the speed and torque from the engine, with the capability to maintain or change the gear ratio between the output and input shafts.
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