What does it mean when the Audi recirculation light is on?

1 Answers
Gale
07/30/25 12:45am
The light being on indicates recirculation mode, while the light being off indicates fresh air mode. The function of the circulation: The light being on indicates recirculation mode, while the light being off indicates fresh air mode. The principle of circulation: In fresh air mode, the fan draws air from outside the vehicle into the cabin, meaning there is an open air passage between the exterior and interior. The air blown by the fan comes from outside, and even when the fan is off, airflow is still drawn into the cabin while driving to replenish fresh air. Sometimes you may feel airflow even when the fan is off, which is because the fresh air mode is set. When driving in congested urban areas, the cabin may fill with exhaust fumes, which is caused by using the fresh air mode. In recirculation mode, the airflow passage between the inside and outside of the vehicle is closed. Without the fan, there is no airflow circulation, and when the fan is on, the air drawn in comes only from inside the cabin, creating an internal airflow cycle.
Was this review help?
14
5
Share
More Forum Discussions

How to Install Rear Seat Cushions?

Methods for installing rear seat cushions: 1. Remove the rear seat headrests, place the seat back covers over the backrests, secure the top of the covers with hooks, and fix the bottom by inserting cushion clips into the gap between the backrest and the seat cushion; 2. Place the seat cushion covers over the rear seat cushions and secure them again by inserting cushion clips into the gap between the backrest and the seat cushion; 3. Reinstall the rear seat headrests and place the headrest covers over them, securing them with clips. Car seat cushions are available in four sets: three-piece, five-piece, eight-piece, and nine-piece. The three-piece set includes cushions for the two front seats and the long rear bench seat.
9
1
Share

Can You Add 95 Gasoline When 92 Gasoline Is Not Completely Used Up?

92 gasoline is not completely used up can add 95 gasoline, which is not harmful to the car, and there will be no chemical reaction between the gasolines. Different grades of gasoline have different octane values, and there are few other differences besides this. The higher the grade of gasoline, the higher the octane value, and the higher the octane value, the better the anti-knock performance of the gasoline. If your car requires at least 92 gasoline, you cannot add gasoline below 92; if your car requires at least 95 gasoline, you cannot add gasoline below 95. Gasoline is a volatile and flammable hydrocarbon mixture liquid obtained from petroleum through fractionation, cracking, or pyrolysis, and can be used as fuel.
14
2
Share

What Volkswagen model has a black emblem?

Volkswagen does not produce any sedan models with black emblems; the black emblem is likely a modification made by the car owner. Volkswagen is a German automobile manufacturer with many models that have been localized for production in China. Some of these localized models include the Polo, Golf, Magotan, Passat, Tiguan, Teramont, and Phideon. Taking the Volkswagen Tiguan as an example, it is a compact SUV produced by SAIC Volkswagen, available in four versions (Urban, Trendline, Comfortline, and Highline) with a total of seven models. In terms of body dimensions, the Volkswagen Tiguan measures 4506mm in length, 1809mm in width, and 1685mm in height, with a wheelbase of 2684mm.
10
5
Share

Are Land Rover and Jaguar the Same Company?

Land Rover and Jaguar are indeed the same company, a British automobile manufacturer that owns two top-tier luxury brands. It operates under India's Tata Motors and is responsible for the research, development, production, and sales of all Jaguar and Land Rover brand vehicles. Jaguar, with its illustrious history, is one of the world's leading manufacturers of luxury sports sedans and sports cars, while Land Rover is globally recognized for producing premium luxury all-terrain 4X4 vehicles. Taking the Land Rover Range Rover as an example, it incorporates new body and chassis technologies, elevating the vehicle's all-terrain performance to another level—whether in terms of the breadth of its off-road capabilities and accessibility or its on-road handling and comfort.
20
1
Share

In which state does a car emit the most carbon monoxide?

When a car is idling with the engine running, it emits the most carbon monoxide. This is because the car's engine combustion chamber operates at high temperatures, which makes it more prone to producing carbon monoxide. When the engine is left running while the car is stationary, the combustion process continues without performing work, causing the combustion chamber temperature to rise even higher and resulting in increased carbon monoxide emissions. Car emissions have a significant impact on the environment. To reduce car emissions, it is advisable to turn off electrical appliances such as the radio, window heating, and air conditioning after exiting the vehicle. Otherwise, these devices will automatically turn on when the car is restarted. Vehicle emission standards refer to regulations that limit the amount of harmful gases such as CO, HC plus NOx, and PM emitted from car exhaust.
11
4
Share

What is the reason for the engine malfunction yellow light always being on?

Engine malfunction yellow light always being on is because the ECU is alerting that there is a fault in the engine, which is an abnormal phenomenon. The following are the reasons for the engine yellow light being on: 1. Sensor issues. Including water temperature, crankshaft position, air flow, intake temperature, oxygen sensor, etc. When these sensors are damaged, have poor contact, or signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine malfunction light to come on. 2. Maintenance issues. Poor engine maintenance is the most common cause of the engine malfunction light coming on. Vehicles have a certain maintenance cycle. If the owner does not perform maintenance on time, coupled with poor driving habits, it will increase the burden on the engine operation, and eventually, it can only be reminded by the yellow light. 3. Oil quality issues. Including fuel and engine oil. The fuel filled in the car generally has a grade, and the engine oil is also divided into semi-synthetic and full synthetic. The manufacturer usually recommends which grade of fuel and which type of engine oil the owner should use. If the owner does not add as required, it will cause engine wear in the long run. 4. Poor combustion of the mixture. Engine spark plug failure, ignition coil failure, fuel pump failure, fuel line blockage, etc. will all cause poor combustion of the engine mixture.
19
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.