What Causes BMW Compressor Not Working?

1 Answers
SophieLee
07/30/25 12:14am
Reasons for car compressor not working: 1. Circuit system failure: Short circuits or open circuits in the wiring directly cut off the power transmission path, preventing the electromagnetic clutch from properly controlling the compressor's operation. 2. Lack of refrigerant: Refrigerant and refrigeration oil are mutually soluble and circulate back to the compressor through the system. If the Freon in the refrigerant is depleted, it will lead to insufficient oil return, reducing the compressor's lubrication effectiveness and causing it to seize or fail. 3. Mechanical wear of the compressor: Long-term operation under high-speed load conditions may cause premature mechanical wear of compressor components, rendering it inoperable. 4. Over-tightened drive belt: An over-tightened drive belt can directly cause the compressor to seize during operation, so it's essential to regularly check the belt's tension. Conversely, an overly loose belt will result in power transmission slippage, leading to intermittent cooling effects and reduced performance.
Was this review help?
17
1
Share
More Forum Discussions

How much fuel consumption increases when idling a car with air conditioning on for one hour?

Generally, idling a car with the air conditioning on consumes about 1 liter of fuel per hour, but this varies depending on the vehicle model. Below is some relevant information about car air conditioning: 1. Introduction: Car air conditioning refers to the air conditioning system installed in a vehicle, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The presence of an air conditioning system has become one of the indicators of a car's functionality. 2. Temperature control: Choose an appropriate air conditioning temperature. In summer, many people prefer to set the temperature very low. However, setting the temperature too low can affect health, so it's important to adjust the air conditioning temperature appropriately. The most comfortable temperature for the human body is between 20°C and 25°C. Above 28°C, people feel stuffy, while below 14°C, they feel cold. Therefore, the air conditioning should maintain the cabin temperature between 18°C and 25°C, as excessively low temperatures can easily make people sick.
17
4
Share

Does the 2021 Volkswagen Touareg Burn Engine Oil?

Yes, it burns engine oil. Both the 2.0T and 3.0T engines of this model have a certain probability of experiencing engine oil burning. Additional information about the Volkswagen Touareg is as follows: 1. Dimensions: The Touareg is a mid-to-large-sized SUV under the Volkswagen brand, with a length of 4878 mm, a width of 1984 mm, a height of 1717 mm, and a wheelbase of 2899 mm. 2. Engine: The Touareg's 2.0-liter turbocharged engine delivers 245 horsepower and a maximum torque of 370 Nm. This engine reaches its maximum power at 5000 to 6500 rpm and its maximum torque at 1600 to 4300 rpm. It features hybrid injection technology and uses an aluminum cylinder head with a cast iron cylinder block. 3. Transmission: This engine is paired with an 8-speed automatic transmission (8AT). The use of an 8AT improves gear shift smoothness and fuel efficiency. Additionally, AT transmissions are relatively more reliable and durable. The Touareg's front suspension uses a multi-link independent suspension, and the rear suspension also employs a multi-link independent suspension. The use of multi-link suspensions on both front and rear enhances the vehicle's handling and ride comfort.
20
1
Share

What is the Function of a Car Dashboard?

The function of a car dashboard is to reflect the working conditions of various vehicle systems. Here is a detailed explanation: 1. It mainly includes indicators such as the fuel warning light, washer fluid light, electronic throttle light, front and rear fog light indicators, and warning lights, allowing real-time monitoring of the vehicle's status. 2. Dashboards vary among different cars, but conventional instruments in most vehicles include the speedometer, tachometer, oil pressure gauge, coolant temperature gauge, fuel gauge, and charging gauge. 3. The car dashboard features various indicator or warning lights. Examples include the coolant level warning light, fuel level indicator, washer fluid level indicator, charging indicator, high/low beam indicator, transmission gear indicator, ABS (Anti-lock Braking System) indicator, traction control indicator, and airbag warning light. 4. The car dashboard serves as a crucial interface for information exchange between the driver and the vehicle. With advancements in automotive electronics, the volume of information regarding the vehicle's operating conditions and the status of its components has significantly increased. While driving, the driver must be more aware and promptly informed about whether various parameters of the car and engine are normal, in order to take timely measures and prevent accidents.
18
5
Share

Is 97 octane gasoline the same as 98 octane gasoline now?

97 octane gasoline is not the same as 98 octane gasoline now. Here is the relevant introduction about gasoline: 1. Introduction: Gasoline is a volatile and flammable hydrocarbon mixture liquid distilled and cracked from petroleum, which can be used as fuel. It appears as a transparent liquid, is flammable, with a distillation range of 30°C to 220°C. The main components are C5~C12 aliphatic hydrocarbons and naphthenic hydrocarbons, as well as a certain amount of aromatic hydrocarbons. Gasoline has a high octane number (anti-knock combustion performance) and is divided into different grades such as 89, 90, 92, 93, 95, 97, and 98 according to the octane number. Starting from January 2012, the gasoline grades 90, 93, and 97 were revised to 89, 92, and 95. 2. Physical and chemical properties: Gasoline is a colorless to light yellow, easily flowing liquid at room temperature, hardly soluble in water, flammable, with a distillation range of 30°C to 205°C. When the air content is 74~123 grams/cubic meter, it will explode upon encountering fire. The calorific value of gasoline is about 44000 kJ/kg (the calorific value of fuel refers to the heat generated by the complete combustion of 1kg of fuel).
4
0
Share

Do cars still need to display annual inspection stickers?

Motor vehicle annual inspection labels have now been digitized and do not need to be displayed on the vehicle. After the launch of electronic insurance policies, insurance companies will issue policyholders with "electronic documents in the form of data messages that prove the existence of a motor vehicle insurance contract relationship," known as electronic insurance policies. These serve as electronic substitutes for paper insurance policies and endorsements, and hold the same legal validity as paper policies. Below are some considerations for annual inspections: 1. Emissions Testing: During the annual inspection, the vehicle's emissions will be tested for compliance, focusing on the oxygen sensor and catalytic converter. The optimal operating temperature for these components is between 400 to 800 degrees Celsius, so it is recommended that owners warm up their vehicles in the inspection area before the emissions test to increase the pass rate. 2. Vehicle Cleaning: Before the annual inspection, owners should clean their vehicles in advance. Cleaning the body, engine compartment, and undercarriage beforehand can make the inspection process easier for the inspectors and help pass the inspection. 3. Lighting Check: The vehicle management office will inspect the vehicle's lights. If the lights are found to be too dim or too bright, the vehicle will be deemed unqualified and will not pass the inspection. It is advisable to restore the original headlights' condition before the inspection to ensure compliance.
17
4
Share

What are some practical and fuel-efficient family cars?

Practical and fuel-efficient family cars include: 1. Corolla: The Corolla is a compact car designed for family daily use, offering high practicality in terms of functional systems. It has received widespread praise from all types of car owners, young and old. 2. Lingpai: The GAC Honda Lingpai is a compact sedan that enjoys great popularity among consumers despite having no overseas counterparts. The reason is simple - the Lingpai is undoubtedly a formidable contender. Its new design style has polarized opinions, but it's significantly more personalized than the previous generation. The interior quality has also improved dramatically, eliminating previous concerns about low-grade materials. Honda's MM concept remains intact, which is one reason people love the Lingpai. Coupled with Honda's i-MMD system, it delivers outstanding fuel efficiency. 3. Lavida: As an A-segment family car, the Lavida dominates the top of the A-class car rankings year after year due to its first-class competitiveness. Its standout feature is the spaciousness that exceeds its class, combined with Volkswagen's premium styling that the Lavida executes perfectly. 4. Sylphy: The Sylphy is a compact family sedan from Dongfeng Nissan that enjoys tremendous popularity in the current family car market. While it may not have many flashy features, its universally appealing design, exceptionally spacious interior, comfortable ride, and high-value standard equipment have earned it the title 'King of Family Sedans,' far surpassing even the Corolla. From top to bottom and front to back, the Sylphy shows no obvious weaknesses, making the new Nissan Sylphy an undeniably strong competitor. 5. Excelle: As a Buick-branded A-segment car for daily shopping, the Excelle offers very competitive pricing and remains a highly popular model. The new version retains the familiar exterior styling and interior layout. However, with the reintroduction of the 1.5L four-cylinder engine and the addition of a mild hybrid version to replace the three-cylinder model, the new Excelle demonstrates Buick's determination to regain market share, as evidenced by its strong sales performance and positive consumer evaluations.
18
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.