What does the Tiguan L leaf mean?

2 Answers
VanErin
07/28/25 11:52pm
Tiguan L leaf refers to the in-car air quality, generally indicating particulate matter. Try smoking a cigarette inside the car, and it will soon turn red, with the number soaring to over 90. It seems to turn green when the value is below 30. Causes of in-car air pollution: In-car air pollution refers to the poor air quality inside the vehicle due to lack of ventilation, car interior decoration, and other reasons. The main sources of in-car air pollution come from the car body itself and decorative materials, among which toxic substances such as formaldehyde, xylene, and benzene have the most severe pollution consequences. Mainstream car models with carcinogenic in-car air: In September 2012, a "Healthy Car Testing Report" indicated that 11 mainstream car models might pose carcinogenic risks, with companies such as Changan, Chery, Shanghai General Motors, and Brilliance listed. The carcinogenic risk originates from the presence of carcinogens in the in-car air quality.
Was this review help?
17
0
Share
VonBella
08/12/25 4:10am
I've been driving the Volkswagen Tayron for several years and often encounter the issue of leaves clogging the air conditioning grille. It refers to the accumulation of fallen leaves at the vehicle's air intake, especially during autumn and winter when there are more falling leaves that can easily block it. Once clogged, the airflow from the AC becomes less smooth, the air inside the car worsens, and it may even cause the fan blades to jam. Once during a long-distance trip, I noticed the AC making strange noises, and upon checking, found the blades full of leaves. I had to use a small brush to clean them out. I recommend owners regularly inspect the front part of the engine bay to clear accumulated leaves and avoid long-term impacts on cooling efficiency. Additionally, leaves may accumulate near the wipers, and not cleaning them in time could lead to motor burnout. Overall, this isn't a design flaw of the vehicle but more of a routine maintenance matter. Developing a habit of cleaning is key—after all, the Tayron performs well, so don't let minor issues affect the driving experience.
Was this review help?
5
1
Share
Expand All
More Forum Discussions

What is the tire pressure reset method for the Buick Regal?

Buick Regal tire pressure reset method is: Press and hold the Odo or Trip button to switch the mileage display on the combination meter until only the total mileage is displayed, then press and hold the Odo or Trip button again. After a few seconds, the low tire pressure indicator light will start flashing. When two beeps are heard, it indicates the reset is complete. The vehicle has a length, width, and height of 4913mm, 1863mm, and 1462mm respectively, with a wheelbase of 2829mm. The body type is a 4-door, 5-seater sedan, equipped with a 9-speed automatic manual transmission and a 2.0TL4 turbocharged engine, delivering a maximum horsepower of 237ps and a maximum torque of 350nm.
7
1
Share

What Causes Fogging in Headlights?

The reason for fogging in headlights is: when the car headlights are turned on, they generate a significant amount of heat, causing the air inside the lamp housing to warm up. When the engine is turned off and the car is parked, especially at night, the headlight interior cools down from hot to cold, causing water vapor in the air to condense on the lamp housing, forming fog. Car headlights are designed with a semi-sealed structure. The headlight housing is sealed, but there is a vent hole on the headlight assembly to prevent dust. When the weather is hot, or under sunlight, or after the headlights have been on for a while, the fog will evaporate and exit through the vent hole. There is also an abnormal situation where headlights may have water ingress, which occurs when a large amount of water enters. Some headlights have poor sealing and are not completely airtight. When the headlights are in operation, they generate a lot of heat, causing the internal temperature to rise and the air pressure inside the housing to increase. This can force open any existing gaps in the seal, allowing rainwater to flow into the housing through these gaps.
11
5
Share

Can a Car Still Be Used After Encountering a Flood?

A car that has been submerged in floodwater cannot be used immediately and requires inspection and repairs first. If the engine has only ingested water vapor through the air filter, the issue is minor and can be resolved with simple measures—cleaning the water vapor from the air filter, throttle valve, and cylinders is sufficient. If the engine has taken in a significant amount of water but still operates normally, albeit with louder noises, it may indicate small amounts of water in the oil or fuel. In this case, changing the oil and cleaning related engine components is necessary. If the engine has taken in a large volume of water but hasn't been started, preventing damage, the water must be drained, the interior thoroughly cleaned, reassembled, and replaced parts as needed. Shortened Piston Stroke: When a vehicle drives through water, liquid may enter the cylinders through the intake manifold. Due to water's incompressibility, the piston stroke shortens, potentially bending or breaking the connecting rods. In extreme cases, a broken rod may puncture the engine block. Engine Hydrolock: Stalling in water occurs when the distributor cap gets wet, disrupting normal ignition, or when the air filter element becomes saturated, increasing intake resistance and allowing water into the combustion chamber, preventing spark plugs from firing. Attempting to restart the engine under these conditions can easily lead to hydrolock.
19
1
Share

What Does Driving Assistance Mean?

Driving assistance refers to providing support to the driver during the process of driving, making it easier and safer for the driver to operate the vehicle on the road. Systems such as Lane Keeping Assist (LKA) and Automatic Parking Assist (APA) are examples of driving assistance technologies. The Lane Keeping Assist system uses cameras to identify the lane markings on the road. When the system detects that the vehicle may deviate from the lane, it can alert the driver or intervene in the steering system to adjust the driving path in time. Common driving assistance systems include Lane Keeping Assist, Automatic Parking Assist, Brake Assist, Reverse Assist, and Driving Assist systems.
1
0
Share

What is the fault when the OBD light appears on the dashboard?

The OBD light appearing on the dashboard is the engine exhaust system fault indicator. OBD stands for On-Board Diagnostics in Chinese. This system continuously monitors the operating conditions of the engine and the working status of the exhaust after-treatment system. Once it detects a situation that may cause excessive emissions, it immediately issues a warning. How OBD works: 1. The OBD device monitors multiple systems and components, including the engine, catalytic converter, particulate filter, oxygen sensor, emission control system, fuel system, EGR, etc.; 2. OBD connects to the Electronic Control Unit (ECU) through various emission-related component information. The ECU has the function of detecting and analyzing emission-related faults. When an emission fault occurs, the ECU records the fault information and related codes, and issues a warning through the fault light to inform the driver. The ECU ensures access to and processing of fault information through a standard data interface.
5
5
Share

How to Clean a Car Fuel Tank?

Methods for cleaning a car fuel tank: 1. Exterior: Inspect and clean the exterior of the fuel tank, checking for dents and leaks in the tank, fuel lines, and connectors. Tighten the fuel tank bracket mounting bolts. If any dents or leaks are found, remove and repair the damaged components. 2. Interior: Open the fuel tank cap, remove the filter screen, and siphon out some of the fuel, leaving about 30L of fuel in the tank. Insert a clean compressed air pipe into the fuel tank through the filler neck, reaching the bottom. Use air pressure to agitate the fuel at the bottom of the tank for cleaning. During cleaning, you can slightly block the filler neck with a clean cloth while continuously changing the position and direction of the air pipe's lower end. After blowing and cleaning for 20 minutes, immediately drain the fuel from the tank to allow any suspended impurities to flow out with the fuel.
10
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.