What are the reasons for the Mazda 6 air conditioning not cooling?

Why Do 4S Stores Not Advocate for Using a Circulation Machine to Change Oil?

Because during the replacement process, a large amount of transmission fluid is required, resulting in higher costs and longer time consumption. When using a circulation machine to change oil, the oil pump continuously injects new oil into the transmission, while the oil extraction tube continuously draws out old oil from the transmission's drain port. By controlling the equal amount of oil added and drained, the total amount of fluid inside the transmission is maintained. There are three methods to change transmission oil: 1. Gravity oil change: Similar to changing engine oil, this method is the simplest and most economical, generally requiring only 3 to 5 liters of transmission fluid. The downside is that gravity draining cannot completely remove all the old oil, only about one-third of the original fluid. 2. Circulation machine oil change: A transmission circulation machine is connected to the transmission's oil circuit interface, with new oil added to the machine. The new oil pushes out the old oil from the transmission, requiring about 12 liters or even more transmission fluid. The more fluid used, the cleaner the transmission becomes. The advantage is thorough oil replacement, while the drawback is the time-consuming process. 3. Removing the transmission oil pan for oil change: The benefit is the ability to clean the transmission oil filter and achieve a relatively thorough replacement.

18

1

Share

Why Can't the Car Lock Be Opened and the Key Won't Turn?

For vehicle security, every car is required by the National Security Inspection Bureau to meet certain safety performance standards upon leaving the factory to prevent theft and illegal use, thereby protecting personal property. Each vehicle has protective measures in place to increase the difficulty for thieves, which is why every car's steering wheel is equipped with an automatic locking function. Solutions are as follows: 1. Basic Anti-Theft Function: If the key won't turn, the solution is quite simple. After removing the key, if the steering wheel is turned left or right or if the wheels are not aligned when parked, the force applied can cause the steering wheel to rotate, triggering the automatic locking function. This locks the steering column and the steering wheel together, making it impossible to turn the wheel even if the key is inserted and forced. This is a common anti-theft feature found in most cars. 2. When the Engine Is Off: Another common issue is the inability to remove the key after turning off the engine, which often occurs in automatic transmission models. This happens when the gearshift is not fully returned to the P (Park) position. Sometimes, it may appear to be in place but hasn't triggered the electronic sensor, or there might be obstacles like coins in the gear slot preventing it from fully engaging. The solution is to check for any foreign objects in the gear slot or restart the car, shift the gear to confirm it's properly engaged, and then the key can be removed.

7

0

Share

Where is the tow hook located on the Wuling Rongguang Mini Truck?

The tow hook of the Wuling Rongguang Mini Truck is located on the right front side of the vehicle's bumper. There is a small rectangular pressure plate, which is a snap-fit device. Gently pry it open with a tool to reveal the towing eye. Below is an introduction to the Wuling Rongguang: 1. Exterior: The Wuling Rongguang Mini Truck continues the classic exterior design of the Wuling Rongguang, with a well-proportioned body and smooth lines, making it both aesthetically pleasing and effectively reducing wind resistance. It also features a three-dimensional European-style wide-view exterior rearview mirror, providing a larger rearview area. 2. Interior: The interior design follows Wuling's distinctive T-shaped design theme, with a large micro-van car-style interior. Rounded cross-sections, curves, and other circular design elements are perfectly combined with large surfaces and straight lines, giving the vehicle a bold and robust appearance. 3. Configuration: It offers two engine options: 1.2L and 1.5L. The 1.2L engine delivers 56kW and 112N·m of torque, while the 1.5L engine produces 73kW and 135N·m of torque. Both are paired with a 5-speed manual transmission.

20

0

Share

What to Do If Vegetable Oil is Spilled in the Car Trunk?

Vegetable oil, extracted from daily food, is a type of edible oil. If spilled in the trunk and left for a long time, it can spoil. Generally, the interior of a car is in a high-temperature state, which accelerates the oxidation and spoilage of edible oil. The primary cause of spoilage in commonly used edible oils is oxidation, and the oxidation rate of edible oils varies with temperature. When the temperature exceeds 60°C, the oxidation rate increases significantly. The hazards of spilling vegetable oil in the trunk are as follows: 1. Difficult to Clean: Spilling vegetable oil in the trunk won't damage the car, but it is hard to clean and leaves an odor. You can drive to a car detailing shop or clean it yourself by opening all the doors to ventilate the car. 2. Oxidation and Spoilage of Edible Oil: When the outdoor temperature reaches 30 degrees in summer, the trunk temperature can exceed 50 degrees or even higher. High temperatures accelerate the oxidation and spoilage of edible oil. The primary cause of spoilage in commonly used edible oils is oxidation, and the oxidation rate of edible oils varies with temperature. When the temperature exceeds 60°C, the oxidation rate increases significantly. 3. High Temperatures Can Cause Hazards: High temperatures can pose risks, though this is not as severe. Typically, the boiling point of edible oils is above 200°C, with peanut oil and rapeseed oil boiling at 335°C and soybean oil at 230°C. Regarding the ignition point, different oils have varying ignition points due to differences in fatty acid content, usually requiring around 340 degrees.

15

3

Share

How many kilometers should a new car have before driving on the highway?

A new car should have at least 5,000 kilometers before driving on the highway. Precautions during the break-in period include: 1. Warm up the engine before starting; 2. Avoid sudden braking; 3. Prevent overloading; 4. Avoid long-distance driving; 5. Do not drive at high speeds; 6. Use high-quality gasoline; 7. Do not remove the speed limiter prematurely; 8. Shift gears timely; 9. Properly adjust the ignition and fuel supply systems. Precautions for highway driving are: 1. The driver and front-seat passenger must fasten seat belts, and the driver should not use a phone while driving; 2. Avoid sharp turns of the steering wheel at high speeds; 3. Do not change lanes arbitrarily; when changing lanes or overtaking, turn signals must be activated in advance; 4. Only use adjacent lanes for overtaking and return to the original lane immediately after overtaking; do not straddle or drive on lane dividers; 5. No reversing, driving against traffic, crossing the central divider to turn or make a U-turn, test driving or driving a training vehicle, or overtaking or parking on ramps; 6. Maintain a following distance of over 100 meters; when speed is below 100 km/h, the distance can be appropriately shortened but should not be less than 50 meters.

14

2

Share

Why does the car body shake at speeds between 90 and 100 km/h?

When the car exceeds 100 km/h, steering wheel vibration is usually caused by misaligned front wheel positioning angles, low front tire pressure, or shock absorber failure. Common cases and solutions for steering wheel vibration: 1. When driving between 80-90 km/h: Steering wheel vibration occurs but disappears above 90 km/h. Analysis & Solution: This is often due to deformation or issues in the vehicle's drivetrain. Check the front wheel alignment angles and toe-in settings. If misaligned, adjust them. Lift the front axle and test wheel rotation to check static balance and excessive tire deformation. Replace if necessary. 2. Normal on smooth roads but vibration on bumpy surfaces: Analysis & Solution: This may result from loose tie rod ends, detached rubber bushings, or irregular tire wear. Have a professional inspect and replace damaged components. 3. At 30-40 km/h: Body swaying sensation (like on a boat). Analysis & Solution: Usually caused by tire deformation from daily wear, impacts, or aging. Replace the tires. 4. Sudden steering wheel vibration during high-speed driving: Analysis & Solution: Aggressive or frequent braking may overheat and deform brake discs/pads. Replacing them typically resolves the issue. 5. Body resonance at high speeds: Analysis & Solution: Often due to twisted drive shafts or dry/unlubricated universal joints. Since these components are underneath, they're easily overlooked during maintenance. Ensure technicians apply grease to lubricatable parts during servicing.

1

0

Share

What are the reasons for the Mazda 6 air conditioning not cooling?

Why Do 4S Stores Not Advocate for Using a Circulation Machine to Change Oil?

Why Can't the Car Lock Be Opened and the Key Won't Turn?

Where is the tow hook located on the Wuling Rongguang Mini Truck?

What to Do If Vegetable Oil is Spilled in the Car Trunk?

How many kilometers should a new car have before driving on the highway?

Why does the car body shake at speeds between 90 and 100 km/h?

What Causes the Smell of Gasoline Inside the Wuling Zhiguang?

Do Used Cars Enjoy Warranty Services at 4S Stores?

Do I Need to Leave My ID Card at the Driving School for the Driving Test?

Where is the spark plug located on the Wuling Zhiguang?