Why is there no air coming from the Q5's air conditioner?

3 Answers
OEdward
07/29/25 11:29am
Blower failure, clogged air filter, or control system malfunction can cause the air conditioner to stop blowing air. The specific reasons are as follows: 1. Blower failure: The blower is the core component for air circulation in the air conditioner. If it is damaged, the car's air conditioner will definitely not blow air. Blower failure may be caused by overheating of internal coils or capacitor damage. You can determine if there's a fault by turning the car's air conditioner to maximum speed and listening for the blower's sound. If a fault is detected, it's necessary to visit a 4S shop or repair shop for repairs, as DIY repairs are not advisable. 2. Clogged air filter: A clogged air filter is one of the reasons for the aforementioned air duct blockage and is the most common cause. Outside air passes through the air filter before entering the car, trapping many airborne particles, which can easily lead to clogging. You can remove the air filter to check if it's clean and replace it if it's too dirty. 3. Control system malfunction: If the above two reasons are not the cause, then the issue lies with the car's air conditioning control system. Faulty air vents, control switches, or the car's air conditioning computer could be the culprits. This is difficult to diagnose, and DIY repairs are challenging. In such cases, it's best to go to a 4S shop for repairs.
Was this review help?
19
4
Share
MacMorgan
08/13/25 7:12pm
Having driven for over 20 years, the most common reasons for no airflow from the AC are either a burnt-out blower motor or a severely clogged cabin air filter obstructing the vents. It's particularly dangerous when the AC suddenly stops blowing during summer highway trips, as it can cause driver fatigue. First, check if the blower fan is operational—if you hear a humming noise but no airflow, the fan blades might be jammed. The cabin filter is usually located below the windshield; remove and inspect it for dust buildup, then clean or replace if dirty. Blown fuses also frequently cause airflow failure, so examine the relevant fuse in the fuse box. Minor issues can be DIY-fixed, but if it involves the electrical control module or refrigerant leaks, visit a professional repair shop immediately to prevent worsening the problem and compromising cooling efficiency. Regular maintenance helps avoid such issues.
Was this review help?
19
0
Share
Expand All
LeilaniLynn
10/08/25 4:38am
Dude, if the AC isn't blowing air, it's most likely the fan module is dead or the ducts are clogged. My car had this issue last month - no cold air coming out, but I fixed it by replacing the fuse myself. First, try adjusting the fan speed to different levels. If there's still no air at max speed, check if the fan motor is running - if not, it could be a motor or wiring issue. The filter is crucial too; when it's dirty, it blocks airflow, so regular cleaning can prevent this. If you hear noise from the AC but no air, something might be stuck in the vents. If simple checks don't solve it, don't push your luck - driving in extreme heat is distracting. Get it fixed at a repair shop ASAP, safety first.
Was this review help?
14
4
Share
Expand All
More Forum Discussions

Is the driver's license medical examination done on your own or arranged by the driving school?

Follow the arrangements of the driving school; go if the driving school organizes it, or go on your own according to the driving school's requirements if they don't. Additional information: Below is an introduction to the driver's license test content: 1. The driver's license test is an examination to obtain a motor vehicle driver's license. The test subjects, content, and passing standards are uniformly set nationwide. The test is divided into three subjects and four examinations: theoretical knowledge, field driving skills, road driving skills, and civilized driving-related knowledge. 2. The basic process of the driver's license test includes filling out forms, medical examination, acceptance, payment, examination, and certificate issuance. 3. The test subjects, content, and passing standards are uniformly set nationwide. The test sequence follows Subject 1, Subject 2, Subject 3, and Subject 4 in order. Only after passing the previous subject can you proceed to the next one.
18
2
Share

What is the normal pressure for an automotive refrigerant gauge?

Automotive refrigerant gauge normal high pressure is between 1.5 to 2.0 MPa, and low pressure is between 0.15 to 0.35 MPa. Here are relevant details: 1. Refrigerant composition: Consists of polyester-based synthetic oils (such as polyalkylene glycol). Since nitrile rubber is incompatible, polybutadiene rubber is used as sealing elements. Characteristics include being colorless, odorless, non-toxic, non-flammable, and non-explosive. Currently, R134a refrigerant is widely used. R134a does not damage the atmospheric ozone layer but still has some greenhouse effect and is currently one of the alternatives to R12. 2. Refrigerant replacement: There is no fixed time cycle for adding or replacing refrigerant. Whether replacement or addition is needed mainly depends on the air conditioning cooling performance. The simplest way to evaluate cooling performance is to measure the air outlet temperature, which is generally between 5 to 10 degrees Celsius, considered normal, with slight variations among different vehicle models. After excluding reasons such as poor heat dissipation or refrigerant leakage, the refrigerant can be replaced. Additionally, after repairing or replacing components of the air conditioning system, refrigerant may also be replaced to ensure optimal cooling performance.
9
2
Share

What Are the Uses of Waste Engine Oil?

Waste engine oil itself is not significantly damaged; it's just that the additives inside have expired during use, and it contains impurities from the engine. After refining and adding new additives, it can be regenerated into engine oil and returned to the market with unchanged performance. Below are the specific uses of waste engine oil: 1. Lubrication: Waste engine oil can still provide lubrication for parts that do not require high-performance lubricants. For example, bicycle chains, metal hinges such as those on excavator or loader cabins, and other mechanical parts can be coated with waste oil to achieve lubrication, friction reduction, and rust prevention. 2. Anti-corrosion: At construction sites, waste engine oil can be applied to building templates to prevent them from sticking to concrete, and it also offers rust and corrosion protection. 3. Fuel: While diesel refined from waste engine oil may damage vehicle fuel systems if used in cars, it poses no major issues when used in stoves for catering businesses or machinery factories. Moreover, fuel derived from waste oil is significantly cheaper than market-priced gas, making it an attractive option for some catering businesses and machinery plants.
3
5
Share

What is the working principle of BYD DM-i Super Hybrid?

Introduction to the working principle of BYD DM-i Super Hybrid: The DM-i Super Hybrid technology is designed based on the highly safe Blade Battery and high-performance high-power motors. It primarily relies on high-power, high-efficiency motors for driving, while the gasoline engine's main role is to generate electricity within its efficient RPM range and directly drive the vehicle at appropriate times. By altering the traditional hybrid design that is primarily engine-centric, it significantly reduces fuel consumption. Below are some key points about DM-i: 1. Models equipped with DM-i: The Qin PLUS DM-i, Song PLUS DM-i, and Tang DM-i, all featuring the DM-i Super Hybrid, have started pre-sales. Among them, the Qin PLUS DM-i has a fuel consumption of 3.8L/100km (NEDC) under battery-depleting conditions and a comprehensive range of over 1,245km. 2. Operating modes: In pure electric mode, the dedicated Blade Battery supplies power to the drive motor. In most hybrid modes, the engine drives a high-power generator to supply power to the drive motor. During medium-to-high-speed driving conditions, the engine directly drives the vehicle or works in parallel with the drive motor to output power.
6
1
Share

What to Do If Failing the Vision Test for Driver's License Renewal?

If you fail the vision test during the driver's license renewal physical examination, you can only correct your vision. Failing the vision test will result in the cancellation of your driver's license. To obtain a driver's license, you must meet the minimum age requirement and pass the driving qualification test. Different countries have varying minimum age standards for applying for a driver's license. Older license holders may need to undergo a physical examination when renewing their license. Below are the physical examination requirements: 1. Height: Applicants for large buses, tractors, city buses, large trucks, or trolleybuses must be at least 155 cm tall; applicants for medium-sized buses must be at least 150 cm tall. 2. Vision: For large buses, city buses, tractors, medium-sized buses, large trucks, trolleybuses, or trams, uncorrected or corrected vision must reach at least 5.0 on the logarithmic visual acuity chart; for other vehicle types, uncorrected or corrected vision must reach at least 4.9 on the logarithmic visual acuity chart. 3. Color Vision: No red-green color blindness. 4. Hearing: Able to distinguish the direction of sound with each ear at a distance of 50 cm from a tuning fork. Those with hearing impairments who can meet the above conditions with hearing aids may apply for a driver's license for small cars or small automatic transmission vehicles.
4
1
Share

What are the advantages and disadvantages of stage 1 ECU tuning?

Stage 1 ECU tuning has the following advantages and disadvantages: 1. Advantages: (1) Smoother gear shifting: Naturally aspirated engines can achieve a 5% to 15% increase in power and torque, with the optimal torque point responding earlier than the factory settings. This can resolve issues such as shuddering during gear shifts in small-displacement vehicles, resulting in smoother gear changes. (2) Improved fuel efficiency: Turbocharged models can achieve a 30% or higher increase in power and torque. Factory turbocharged models typically activate the turbo at around 1800 RPM, but after ECU tuning, the turbo engages at around 1500 RPM, allowing torque to be delivered earlier. This broadens the maximum torque output curve, making the vehicle more fuel-efficient compared to the factory settings. (3) Problem resolution: Issues such as low idle speed, stalling, engine knocking in certain ranges, and automatic transmission shift vibrations can be effectively addressed. Engine RPM can also be improved. 2. Disadvantages: (1) Increased risk of malfunctions: Upgrading the ECU power program is a specialized task. Poor tuning can trigger warning lights, lead to uneven power output, and shorten the engine's lifespan. (3) Safety concerns: Excessive modifications should be avoided, as they can exceed the vehicle's intended limits and damage hardware components. Upgrading to a racing ECU mode may cause issues such as transmission gear fractures, axle breakage, or slippage due to excessive torque.
3
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.