What Causes the Gurgling Water Sound in Car Air Conditioning?

Can I Take the Subject 4 Test Without Passing Subject 3?

You cannot take the Subject 4 test without passing Subject 3. Only after passing both Subject 2 and Subject 3 (road driving skills test), can the applicant take the Subject 3 safety and civilized driving knowledge test on the same day. Additional information: 1. Scheduling exams as per appointment: The vehicle management office should arrange the exams according to the scheduled venue and time. After passing Subject 1, the applicant can schedule Subject 2 or Subject 3 (road driving skills test). In some regions, applicants can simultaneously schedule Subject 2 and Subject 3 (road driving skills test), and upon successful scheduling, they can take the tests consecutively. After passing both Subject 2 and Subject 3 (road driving skills test), the applicant can take the Subject 3 safety and civilized driving knowledge test on the same day. 2. No exam arrangement within 60 days: If the vehicle management office cannot arrange Subject 2 or Subject 3 (road driving skills test) within 60 days of the applicant's scheduling, the applicant can choose to schedule the test at another venue within the same province (autonomous region, municipality directly under the central government).

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How to Determine Tire Wear Indicators?

Determining tire wear indicators: On the sidewall of the tire, there is a small triangular pattern every 60 degrees, which serves as an indicator mark. By following this triangle with your hand towards the tread, you will generally find two grooves on the tire tread. Inside these grooves, you can feel a horizontal line (which is also visible upon close inspection). This is the tire wear indicator. When the raised part of the tread wears down to this line, the tire should be discarded. Below are additional details: 1. If the remaining groove depth of the tire tread reaches or falls below 1.6 mm (there is an indicator mark inside the longitudinal straight groove of the tire tread showing this depth), the tire must be replaced because its water drainage capability is significantly reduced, making driving on wet surfaces more dangerous. 2. National standards stipulate that the wear limit for radial tires used in passenger cars is 1.6 mm, while for trucks and buses, it is 2.0 mm. Tire manufacturers are required to install wear indicators on tires according to these standards. When the tread wear reaches the specified limit, the wear indicator should display to remind drivers to replace the tire promptly.

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What Causes the Abnormal Sound When Starting but Fails to Ignite?

If the car makes a clicking sound when starting but fails to ignite, it could be due to starter motor issues, insufficient battery power, or low voltage. Starter Motor Issues: When turning the key results in a clicking sound but the engine doesn't start, the clicking noise is either from the relay or the starter motor. This indicates that the starter motor has responded but lacks the power to turn the flywheel, preventing the car from starting. Insufficient Battery Power: A clicking sound when the car fails to start might be caused by insufficient battery power. Leaving headlights on when parked or connecting too many external devices can drain the battery. Low Voltage: Low voltage can also cause the car to make a clicking sound when failing to start. This could be due to an old battery that has degraded over time, reducing its charge capacity, or using the car's audio system or air conditioning without starting the engine.

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What is the reason for the Mitsubishi Elevator 89 light not lighting up?

The reasons why the Mitsubishi Elevator 89 light does not light up are as follows: The elevator safety circuit is not connected: The 29# indicator is abnormal, and the 89# light-emitting diode cannot light up normally. Sometimes the 89 light goes out and immediately lights up again, which may be a problem with the safety circuit. Upper and lower limit switches: Check whether the upper and lower limit switches are normal, whether the wiring is correct, and whether there is any broken skin or grounding in the circuit. Temperature fuse burned out: The 89 light also cannot light up. You can check the white ceramic block (temperature fuse) on the power board and measure whether the continuity of the AB terminals of the temperature fuse is normal. Brake gap is too small: After long-term operation, the friction of the main traction wheel is too high, the main motor temperature rises, and the brake temperature is too high to detect. The elevator self-protects, causing the elevator to freeze, and the fast and slow cars cannot start (unless reset or powered off). Although the 89# light may not necessarily go out in this case, it is also a manifestation of abnormal operation of the 89 relay.

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What Type of Tires Are Suitable for Desert Off-Roading?

For terrains like deserts that demand higher tire traction, it is generally recommended to use specialized sand tires. These tires are specifically designed for desert off-roading, offering wear resistance and high-temperature tolerance. They feature large chevron tread patterns and deeper tread depths compared to regular off-road tires. If specialized sand tires are unavailable, all-terrain tires are also a good alternative. Below is additional information: 1. When selecting tires for desert off-roading vehicles, it's important to consider not only the tread pattern and brand but also the tire specifications (letters on the tire surface) and wheel parameters (ET and J values—the former relates to wheelbase and affects turning, while the latter indicates wheel width and affects installation). Proper tire maintenance during use is also crucial. 2. Off-road tires perform well under low-pressure conditions, especially in deserts. It is advisable to reduce tire pressure to around 1.0 BAR to enhance the tire's enveloping characteristics. Therefore, it's essential to carry a tire deflator and an air pump when driving in deserts.

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What is the emergency rescue number on the highway?

In most provinces across the country, the emergency rescue number is 12122, with slight variations in different cities and provinces. Vehicle owners can dial 12122 for assistance in case of accidents or emergencies on the highway. In addition to the nationwide unified emergency number, different provinces may have their own specific service hotlines. Additional information: 1. 12122 is the national highway emergency rescue number, which is completely non-profit and can only be used with approval from the Communications Administration. It is intended for reporting emergency highway accidents. Additionally, 12328 is a supervision service number, and 122 is the accident reporting number. 2. When encountering a road traffic accident, you should dial 122 to report the incident. The correct way to make the call is as follows: Stay calm when dialing the traffic accident emergency number, and only dial 122 after hearing the dial tone. After connecting, confirm with the operator that you have reached 122 to avoid misdialing. Clearly state the location, position, and time of the accident, as well as key details such as casualties, to ensure a prompt response and timely medical assistance. Answer the operator's questions calmly and provide your name and phone number to maintain contact.

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What Causes the Gurgling Water Sound in Car Air Conditioning?

Can I Take the Subject 4 Test Without Passing Subject 3?

How to Determine Tire Wear Indicators?

What Causes the Abnormal Sound When Starting but Fails to Ignite?

What is the reason for the Mitsubishi Elevator 89 light not lighting up?

What Type of Tires Are Suitable for Desert Off-Roading?

What is the emergency rescue number on the highway?

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