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Why does the car air conditioning AC button malfunction?

1 Answers
StCora
08/29/25 5:32am
If the AC button in the vehicle does not light up, it could be due to a wiring issue in the car's air conditioning system or a problem with the AC button itself. Here is relevant information about the car air conditioning AC button: 1. Concept: AC stands for Air Conditioning. When the car air conditioning is turned on, air will blow out after opening the vent. 2. Function: The AC button in the car is the switch for the onboard air conditioning compressor, controlling its activation and deactivation. The cold air in car air conditioning comes from the operation of the onboard air conditioning system, which requires the compressor to work. This means that only when the A/C button is pressed will the air conditioning compressor operate, and the air blown by the blower will be cold.
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How many years can the original car battery last?

Original batteries can last about 3 years. Of course, this is not absolute, as the lifespan of the battery is greatly related to vehicle maintenance and usage habits. The functions of the battery and methods to extend its lifespan are as follows: Functions of the battery: During engine startup, it supplies power to the starting system, ignition system, electronic fuel injection system, and other electrical systems of the car; protects electronic devices; maintains voltage stability. Methods to extend battery life: When the car is not used for a long time, the owner should disconnect all onboard electrical devices from the battery to effectively prevent battery discharge; try not to use onboard devices or external power sources when the engine is off; always remember to turn off the headlights when parking at night; it is best to check the battery every six months.
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What is the warning sign for low water level in the car's radiator?

If the car's radiator is low on water, the dashboard will display a low water level warning sign, which resembles the shape of a thermometer. Symptoms of engine overheating: When white steam suddenly emerges from under the hood while driving, or the temperature gauge needle rapidly rises to the high-temperature "H" mark, it indicates that the engine is overheating. Emergency measures for engine overheating: In such a situation, you should immediately find a safe place to pull over, but do not turn off the engine right away. Allow the engine to idle to continue dissipating heat, and open the hood to increase the cooling rate.
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Which Gear to Use for Long Downhill in Automatic Transmission?

When driving down a steep slope with an automatic transmission, you should shift into the L gear, which is the low gear. After engaging this gear, the vehicle will have higher RPM and stronger traction, and the speed will also be reduced. This helps to control the car's speed and provides some assistance when descending steep slopes. Automatic transmission cars can also be switched directly to manual mode when going down long slopes. Since the car will accelerate automatically when going downhill, it is essential to reduce the speed, especially on long or steep slopes. Controlling the speed can prevent the vehicle from losing control, as excessive speed can be very dangerous. When reducing speed, avoid frequent use of the brakes, as this can cause them to overheat and lead to brake failure. Instead, use engine braking when necessary. On steep slopes, never use the D gear when descending. Also, adopt the correct method when parking, such as avoiding prolonged braking, which can increase the gap between the brake discs and pads, reduce the efficiency of the braking system, and potentially cause brake failure. Instead, apply gentle and repeated light braking.
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What are the key points for Subject 2 of the driving test?

License Subject 2 exam has the following difficult key points: Reverse Parking: Widely considered the hardest part of Subject 2, its difficulty lies in mastering the timing of steering wheel turns. Hill Start: Rollback and stalling are common issues during hill starts. If the vehicle shows signs of rolling back while releasing the brake, immediately press both brake and clutch firmly to stabilize the car, then restart using the same method. 90-degree Turn: There are multiple approaches for 90-degree turns. The simplest method is to fully turn the steering wheel when the hood covers the opposite yellow line.
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Does the Tayron have a manual transmission?

Tayron does not have a manual transmission, all models are equipped with a 7-speed dual-clutch transmission. The following are the differences between automatic and manual transmissions: Different operation difficulty: Manual transmissions mainly rely on the driver stepping on the clutch to complete gear changes. Manual transmission cars allow drivers to better experience the thrill of climbing hills, accelerating, and the joy of driving. Automatic transmissions mainly rely on the hydraulic transmission principle of the torque converter to automatically complete gear changes. Different safety levels: Although coasting in neutral with a manual transmission saves fuel, the car loses power, especially during turns, which can lead to risks such as understeer and tail flicking. Additionally, if the engine stalls at idle, the car will lose steering assistance and braking, increasing safety hazards during driving. Automatic transmission cars, since they cannot be driven in neutral, always maintain power support throughout the journey, making this driving method safer.
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Will a motorcycle be automatically deregistered if it hasn't undergone annual inspection for three years?

Motorcycles that haven't undergone annual inspection for three years will be automatically deregistered. Motorcycle annual inspection schedule: The annual inspection schedule for motorcycles is based on the purchase date. New motorcycles only require inspection every 2 years within the first 4 years of purchase, while those over 4 years old need annual inspection. For the inspection, you just need to drive the motorcycle and bring the original owner's ID card, original vehicle registration certificate, tax payment certificate for vehicle and vessel tax, and compulsory insurance policy to a qualified local institution to complete the annual inspection. Motorcycle annual inspection location: Motorcycles should undergo annual inspection at the vehicle management office in their registration location (where the license plate was issued). Motorcycles require inspection every 2 years within the first 4 years, and annually thereafter.
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