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What does ECU mean in a car?

1 Answers

VanMatthew

07/29/25 11:18am

ECU in a car is the Electronic Control Unit, also known as the vehicle's onboard computer. Its function is to control the vehicle's driving state and realize various functions. The ECU mainly uses data collection and exchange from various sensors and buses to determine the vehicle's status and the driver's intentions, then controls the car through actuators. Common reasons for ECU damage: 1. Not disconnecting the ECU wiring harness during chassis welding repairs; 2. Using a direct thyristor charger to charge when the battery is low; 3. Charger voltage is too high, polarity is reversed, or the ignition switch is turned on or even the generator is started while charging; 4. Sudden disconnection of the battery's positive and negative terminals while the engine is running.

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