What is the fault when the automatic transmission hold light is on?
2 Answers
There is a fault in the transmission. The following is an introduction to the transmission: 1. Introduction: A device that changes the speed ratio and direction of motion. It is used in automobiles, tractors, ships, machine tools, and various machines to change the torque, speed, and direction of motion transmitted from the drive shaft to the driven shaft under different working conditions. 2. Composition: A gear-driven transmission generally consists of a housing and several pairs of gears. 3. Function: To change the transmission ratio between the engine and the wheels, enabling the engine to operate under optimal conditions, expanding the torque and speed transmitted from the engine to the drive wheels, and achieving different speeds; allowing the vehicle to reverse; and setting the neutral gear.
When the HOLD light in an automatic transmission car comes on, it reminds me of that embarrassing incident during a long-distance drive. This light usually indicates a minor issue with the braking or transmission system, such as the parking brake not being fully released, low brake fluid level, or a problem with an electronic sensor. Once, when the light came on while I was driving, accompanied by a soft feeling when pressing the brake pedal, I immediately pulled over to check and found the brake fluid was insufficient. After topping it up, the light went off. Other common causes include a loose ABS system sensor or a circuit fault in the transmission control module. If not addressed promptly, it can increase the risk of skidding, especially in rainy or snowy conditions. Therefore, I recommend that when the light comes on, drivers should first check if the parking brake is fully released and if the brake pedal feels normal. If there's no improvement, pull over to a safe area immediately, avoid high-speed driving, and then visit a professional repair shop to diagnose the fault code with a scanner. Regular maintenance, such as checking brake fluid levels and sensors, can prevent such issues and ensure the car's safety.
