What does the number after the exam session mean?

What does the sun exclamation mark mean in a car?

The sun with an exclamation mark in the middle is the brake pad warning light, indicating a brake pad fault, which serves as a reminder to replace the brake pads. The warning will also appear when the front brake pads are nearing their wear limit. More information about the sun exclamation mark in cars is as follows: 1. Introduction: The car dashboard is a device that reflects the working conditions of various vehicle systems. Common indicators include the fuel indicator, washer fluid indicator, electronic throttle indicator, and front/rear fog light indicators. Dashboards vary between different car models. 2. Causes of brake pad failure: If the brake warning light comes on during a long trip, it indicates that the brake fluid level is insufficient, and there may be a leak in the brake system.

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How often should the engine be serviced?

The maintenance interval for an engine is typically every six months or 5,000 kilometers. The specific maintenance schedule should be determined based on the vehicle's usage habits and conditions. Additionally, the type of engine oil used affects the maintenance interval. 1. If mineral oil is used, the maintenance interval is 5,000 kilometers. 2. If semi-synthetic oil is used, the maintenance interval is 7,500 kilometers. 3. If full synthetic oil is used, the maintenance interval is approximately 10,000 kilometers. Five key points for engine maintenance: 1. Use the appropriate grade of engine oil and change the oil and filter regularly (every 5,000 kilometers). 2. Frequently maintain the air filter and replace it periodically (every 20,000 kilometers). 3. Regularly clean the fuel system and replace the fuel filter periodically (every 30,000 kilometers). 4. Periodically service the radiator cooling net (every 30,000 kilometers). 5. Replace the spark plugs periodically (every 40,000 kilometers or based on driving conditions).

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What Does a Vehicle Powertrain System Malfunction Mean?

Vehicle powertrain system malfunction refers to a failure occurring in the entire mechanical arrangement process where the power generated by the engine is transmitted through a series of power transfers and finally reaches the wheels. Below are detailed explanations: 1. Causes of malfunction: Incorrect ignition timing, premature ignition causing early combustion and detonation of the combustible mixture; spark plug misfire or weak spark due to faults in the ignition system; cylinder compression pressure issues, severe wear of pistons, piston rings, and cylinders leading to increased clearance between them, reduced sealing performance, cylinder head leakage, and decreased cylinder compression pressure; poor sealing of the crankcase causing air leakage and reduced suction. 2. Solutions: Check if the air filter is clogged and clean it if necessary. Check the throttle opening—when the accelerator pedal is fully depressed, the throttle should be fully open; otherwise, adjust its cable or perform learning for the pedal position sensor and throttle position sensor. Take the vehicle to a repair shop for servicing.

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Why Does a Car Horn Go Mute?

Car horns go mute primarily due to poor contact at the horn terminals. Here are the relevant details: 1. Cause: Frequent and prolonged use of the horn can cause the horn contacts to burn and corrode, creating impedance. This reduces the current in the electromagnetic coil, weakening its magnetic force, which in turn loses the attraction needed to vibrate the diaphragm, resulting in a hoarse horn sound. 2. Function of the Horn: Designed to alert others, the horn must produce a loud sound. If it sounds hoarse, it may fail to attract the attention of pedestrians and other vehicles, potentially leading to traffic accidents. 3. Maintenance Tips: Avoid pressing the horn for extended periods—preferably no longer than 10 seconds—to prevent contact burning and horn damage. Keep the horn exterior clean and avoid direct water spray during car washing to prevent water ingress, which can mute the horn. If water does enter, promptly dry it with an air gun. Regularly check the horn's fixing screws to ensure proper grounding and inspect the engine's output voltage to prevent damage from excessive voltage (which can burn the horn contacts) or abnormal sound due to low voltage. Avoid modifying the horn arbitrarily; if modifications are necessary, consult a professional to prevent incorrect placement of metal and insulating pads, which can cause horn malfunctions.

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What are the practical features of the Avalon?

Toyota Avalon's practical features are as follows: (1) Center console buttons: 1. Hazard warning lights (commonly known as double flashing lights): Used to warn surrounding vehicles to prevent rear-end collisions. 2. Internal/external circulation: The difference between internal and external circulation is: Internal circulation: Air is always provided from inside the vehicle. External circulation: Allows outside air to enter and replace the original air inside the vehicle. 3. Temperature zone synchronization: The function of temperature zone synchronization is that only the driver's temperature needs to be changed, and other temperature zones will follow the same change. After turning off this temperature zone synchronization, each zone can be set individually to meet the needs of passengers in different positions. (2) Door buttons: On the Toyota Avalon driver's door: 1. Rear window lock button. 2. One-touch up/down control switch for all four windows. 3. Adjustment switch for the exterior rearview mirrors (angle, folding). 4. Central locking button. (3) Roof buttons: 1. Driver's reading light. 2. Front passenger reading light. 3. Vehicle lighting switch. 4. Sunroof switch.

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How often should the engine's spark plugs be replaced?

Replacement of car engine spark plugs: Generally, the lifespan of a resistor spark plug is 20,000 kilometers, platinum spark plugs last 40,000 to 50,000 kilometers, and iridium spark plugs can last up to 100,000 kilometers. Different car models have varying manufacturer-specified maintenance cycles, so the specific replacement interval should follow the car manufacturer's requirements. The rules for replacing spark plugs are as follows: 1. When replacing spark plugs, it's not just about replacing the corresponding part but replacing the entire set. This depends on how many cylinders the engine has. For example, if it's a 4-cylinder engine, all four spark plugs should be replaced together. Replacing only one may affect the engine's overall compatibility. 2. When replacing spark plugs, it's essential to clarify the material choice, distinguishing whether the car uses ordinary copper core, yttrium, platinum, iridium, or platinum-iridium alloy. More expensive metals generally offer better performance, longer lifespan, and more outstanding safety performance. Conclusion: Spark plugs of the same material may have different usage cycles in different car models and engines, so the replacement frequency varies. Therefore, the specific replacement cycle should be based on the manufacturer's requirements.

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What does the number after the exam session mean?

What does the sun exclamation mark mean in a car?

How often should the engine be serviced?

What Does a Vehicle Powertrain System Malfunction Mean?

Why Does a Car Horn Go Mute?

What are the practical features of the Avalon?

How often should the engine's spark plugs be replaced?

How Long Does It Take to Repair a Car Dent?

What Causes a Gasoline Water Pump to Automatically Shut Off?

Why can't the Haval H6 detect the key?

What Are the Common Engine Faults and Their Causes?