How to Deal with Fault Code 522012?

Why does hot air come out when the car's air conditioning and heater are not turned on?

The reason why hot air blows out of the vents when the car's air conditioning and heater are not turned on is that the car's air conditioning has switched to external circulation. This phenomenon mostly occurs in vehicles equipped with automatic air conditioning. To ensure air flow, the automatic air conditioning switches to external circulation. As the vehicle speed increases, outdoor hot air is drawn into the cabin, making it seem like hot air is being emitted from the vents. When the automatic air conditioning is turned off, it actively switches to external circulation or foot mode to ensure air circulation inside the cabin. While the vehicle is moving, the negative pressure generated inside the cabin causes air to enter the air conditioning system from the external circulation, creating a free convection. The faster the vehicle speed, the more noticeable the convection becomes, making it feel like hot air is still coming from the vents. This is a normal phenomenon. In addition to the air conditioning automatically switching to external circulation, another possible scenario is that the temperature control is not set to the coldest state. If the air mix damper is open, heat from the engine coolant can also enter the cabin through the damper, causing the cabin temperature to rise. This is also a normal phenomenon.

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Where is the rearview mirror heating for the S90?

Below is extended information about the rearview mirror heating for the S90: 1. Rearview mirror heating location: The rearview mirror heating button for the Volvo S90 is located on the air conditioning control panel and can simultaneously heat and defog the exterior rearview mirrors and the rear windshield. The icon for the rearview mirror heating button features three upward-curving arrows paired with a rectangle. 2. Function of rearview mirror heating: The rearview mirror heating function ensures clear visibility by using heating elements embedded behind the mirror to warm the surface during rainy, snowy, or foggy conditions. This feature is particularly useful in such weather, as the heating elements quickly warm the mirror, gradually removing rain or fog without the need for the driver to manually wipe the mirrors, thereby reducing driving hazards. 3. Effectiveness of rearview mirror heating: In rainy or snowy conditions, pressing the rearview mirror heating switch activates an indicator light, and the heating elements rapidly warm the mirrors to a set temperature (typically between 35-60°C) within minutes. Steam may rise from both mirrors (if the outside temperature is low), while water droplets and fog evaporate, effectively defogging and defrosting the mirrors.

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What are the test items for the D license?

According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses", there are 4 test subjects for the D driving license, among which Subject 1 and Subject 4 are theoretical tests, and Subject 2 and Subject 3 are practical vehicle tests. The test contents are as follows: Subject 1: Road traffic safety laws and regulations and related knowledge test; Subject 2: Pile test, slope fixed-point parking and starting, passing a single-plank bridge; Subject 3: The test content of Subject 3 is determined by the traffic management department of the provincial public security organ, and there is no unified standard. More comprehensive items include gear shifting, passing intersections, passing crosswalks, left turns, U-turns, right turns, lane changes, straight driving, and parking on the side; Subject 4: Safe and civilized driving common sense test, which is also a theoretical test. D-type driving license allows driving three-wheeled motorcycles with an engine displacement of more than 50ml, as well as ordinary two-wheeled motorcycles (E) and light motorcycles (F). Pile test: Failure to drive according to the prescribed route and sequence, unqualified; Touching or rubbing the pile pole, unqualified; Vehicle body out of line, unqualified; Moving the vehicle into the garage unsuccessfully, unqualified; Slope fixed-point parking and starting: After the vehicle stops, if the front axle of the motorcycle is not fixed on the pile pole line and exceeds 50 cm forward or backward, unqualified; After the vehicle stops, if the front axle of the motorcycle is not fixed on the pile pole line but does not exceed 50 cm forward or backward, 20 points will be deducted; After the vehicle stops, if the body is more than 30 cm away from the roadside line, 20 points will be deducted; Passing a single-plank bridge: If one wheel does not get on the bridge, 20 points will be deducted each time; If one wheel falls off the bridge during driving after getting on the bridge, 10 points will be deducted each time. Slope fixed-point parking and starting: Control the vehicle to stop accurately and start smoothly without rolling back. The starting time shall not exceed 30 seconds.

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Will Insurance Cover Water Damage to a Car from Rain?

If the car owner has purchased auto damage insurance, they can receive compensation for rescue and cleaning costs, electrical losses, and interior damage caused by water entering the vehicle, excluding engine damage, which the owner must bear themselves. If the owner has purchased the main auto damage insurance along with additional water damage coverage, the insurance company will cover all vehicle losses. Generally, the following types of car insurance can be purchased: 1. Compulsory Traffic Accident Liability Insurance: This is a mandatory insurance that must be obtained before registering the vehicle at the DMV and must be paid on time. 2. Third-Party Liability Insurance: Third-party liability insurance serves as an effective supplement to compulsory insurance, as the latter's compensation limits are relatively low. Third-party liability insurance offers more comprehensive coverage. 3. Auto Damage Insurance: Auto damage insurance compensates for the owner's vehicle losses. The premium is closely related to the vehicle's purchase price and the number of seats; generally, the higher the vehicle price, the higher the premium. 4. Spontaneous Combustion Loss Insurance: This insurance mainly covers liability for spontaneous combustion caused by circuit aging or fuel supply issues. In the event of an accidental fire, the policyholder can claim compensation.

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Is Car Film Better Applied from the Inside or Outside?

Car film is better applied from the inside. Here is relevant information about car film: 1. The main functions of the film are to block ultraviolet rays, reduce heat, prevent glare, and protect against injuries caused by sudden glass breakage. Some sun films are one-way transparent, which also helps protect personal privacy. 2. Car film is generally applied to the front and rear windshields, side windows, and sunroof. This thin film is also known as sun film or explosion-proof and heat-insulating film. 3. It can also reduce damage to car interiors and passengers caused by UV exposure. Through physical reflection, it lowers the temperature inside the car, reduces the use of air conditioning, thereby lowering fuel consumption and saving some expenses.

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What is a car body kit composed of?

Car body kits are composed of front skirts, side skirts, and rear skirts. Below is relevant information about car body kits: A car body kit refers to the external aerodynamic components of a vehicle, with the primary functions being: 1. To reduce the counter airflow generated during driving while increasing the downforce on the car. This makes the car more stable during driving, thereby reducing fuel consumption. 2. Body kits are generally divided into two main categories: bumper-style and lip-style. 3. The bumper-style kit involves completely removing the original front and rear bumpers and replacing them with a new bumper design. 4. The lip-style kit adds a lower lip extension to the original bumper, and this type of kit requires extremely high-quality materials and installation techniques.

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How to Deal with Fault Code 522012?

Why does hot air come out when the car's air conditioning and heater are not turned on?

Where is the rearview mirror heating for the S90?

What are the test items for the D license?

Will Insurance Cover Water Damage to a Car from Rain?

Is Car Film Better Applied from the Inside or Outside?

What is a car body kit composed of?

How to ventilate when you can't open the windows while driving in the rain?

What License is Required for Large Buses?

What to Do When a Vehicle Stalls Due to Flooding Caused by Heavy Rain?

Will one mistake in the simulated lighting test of Subject 3 result in failure?