Why does the outside of the windshield fog up when driving in the rain?

1 Answers
LeIsabella
07/30/25 6:41am
The reason the outside of the windshield fogs up when driving in the rain is due to a significant temperature difference or humidity variation between the indoor and outdoor environments. If your vehicle is equipped with a manual air conditioning system, turn on the front window defogging mode, set the fan speed to maximum, switch on the A/C, and adjust the temperature to the lowest setting to dry the fog on the windshield. If your vehicle has an automatic air conditioning system, usually pressing the one-touch defrost button will quickly remove the fog. If the ambient temperature is too cold for using the air conditioner, you can also turn on the heater, set the airflow to maximum, and activate the front window defogging mode. The fog should disappear within minutes. Most rear windshields come with electric heating—simply turn on the rear windshield and mirror heating functions to quickly remove fog and prevent it from forming again.
Was this review help?
11
2
Share
More Forum Discussions

Is the car safe as long as it doesn't stall in water?

It is not necessarily true that the car is undamaged as long as the engine doesn't stall. Driving through water can lead to water entering the transmission and may cause damage to the vehicle's electronic systems. Here is some relevant information: 1. Inspection is necessary: Generally, if the car doesn't stall while driving through water, it should be fine. However, it's best to inspect the vehicle, especially if the water level has risen above half of the tire. This could potentially endanger the entire vehicle's electrical system and the onboard computer, so an inspection is recommended. After exiting the water, apply the brakes gently to dry the brake pads by friction. 2. Engine stalling: Driving through water may cause the engine to stall. This happens when water enters the intake system, suddenly cutting off the air supply needed for combustion, leading to an immediate stall. In any case, it is strictly forbidden to restart the engine directly. The first step should be to check whether water has entered the engine's intake system.
3
5
Share

Does the green book indicate that the vehicle is for non-operational use?

The green book may indicate that the vehicle is for non-operational use. Here are the relevant details: 1. Operational vehicles: These are vehicles used for transporting goods or passengers for profit, such as taxis or privately-owned cargo trucks. Before such vehicles can be used on the road, in addition to requiring a driver's license and vehicle registration, they must also obtain an operational permit and a professional driver's qualification certificate from the transportation management department, along with paying relevant fees. 2. Non-operational vehicles: These refer to cars or trucks owned by individuals or organizations that are not used for profit-making activities like taxi services or transporting goods for hire. Instead, they are for general internal use. In this case, privately-owned small cars do not need an operational permit or professional driver's qualification certificate. However, privately-owned trucks still require these documents. When it is unclear whether the vehicle is for 'personal use' or 'operational purposes,' operational fees must be paid.
6
4
Share

What does the teacup pause symbol mean on an Audi Q5?

The pause symbol on the Audi Q5 dashboard indicates that you have been driving for too long and it is time to take a break. Here is an introduction to the Audi Q5: 1. Overview: The Audi Q5 is a mid-size SUV developed based on the Audi A4 production platform. The stylish exterior of the Audi Q5 continues the design style of the Audi Q7, featuring Audi's signature chrome "single-frame grille," highlighting its fashionable and dynamic design. 2. Space: The overall driving and passenger space is spacious and practical, with ample legroom and headroom; the seats are flexible, well-padded, and comfortable; the interior storage space is abundant, and the trunk is large, making it convenient to store bulky items. 3. Performance: Equipped with a 2.0TFSI four-cylinder inline engine and a 7-speed Stronic dual-clutch transmission, the Audi Q5 delivers strong power output, smooth gear shifts, and quick acceleration. 4. Interior: The domestic Q5 has a reasonable and simple interior layout, rich and practical configurations, and a strong sense of technology; the cabin is finely crafted with high-quality materials.
17
1
Share

What is the fuel consumption of a 2.5L displacement car?

The fuel consumption of a 2.5L displacement car depends on the actual conditions of the vehicle itself. Different cars, even with the same engine displacement of 2.5L, will have varying actual fuel consumption. Additionally, different driving styles and road conditions can lead to significant differences in fuel consumption. Here are the specific details: 1. When a car starts from a stationary state, it requires a large acceleration, and the engine needs to output substantial power. If the car frequently stops and starts, the fuel consumption will inevitably increase. 2. When driving on congested roads, the car's engine spends some time in an idle state. During idle, the car's mileage does not increase, but the engine continues to consume fuel, which also leads to higher fuel consumption. 3. Personal driving habits also have a significant impact on the car's fuel consumption.
9
0
Share

Is There a Water Wading Insurance for Cars?

Yes, there is water wading insurance, also known as vehicle damage insurance or engine special loss insurance. Here is relevant information: 1. Water Wading Insurance: Different insurance companies may have varying names for it, but the essence remains the same. This is a newly derived type of insurance, referring to an additional coverage purchased by the car owner specifically for the engine. It provides compensation if the insured vehicle's engine is damaged due to driving through waterlogged roads or being submerged. However, it is important to note that if the car owner forcibly starts the engine after the vehicle has been submerged, resulting in damage, the insurance company will not provide compensation. 2. Comprehensive Car Insurance: Comprehensive insurance includes two main parts: compulsory traffic insurance and commercial insurance. Compulsory traffic insurance is a mandatory coverage required by the state for all vehicles. Commercial insurance consists of a series of vehicle insurance products offered by insurance companies, mainly divided into basic insurance and additional coverage. Additional coverage generally cannot be purchased independently and must be attached to the corresponding basic insurance.
13
1
Share

Does the BMW X3 come with a dash cam?

None of the BMW X3 series come with a factory-installed dash cam; they are all installed after purchase. The BMW X3 is an SUV model that introduces the new SUV Sports Activity Vehicle concept and is equipped with BMW's patented xDrive intelligent all-wheel-drive system. Its dimensions are 4569mm in length, 1853mm in width, and 1674mm in height. Operation method: Press the start button to activate the dash cam's recording function. Press the volume setting button to adjust the recording volume; each press increases the volume level. Press the dash cam button to enter the settings interface. A dash cam is a device that records video, audio, and related information during vehicle travel. Installing a dash cam helps protect the driver's legal rights. In case of collisions with pedestrians crossing the road or cyclists/motorcyclists, the dash cam can provide crucial evidence. Reviewing the recorded footage makes accident liability clear at a glance, enabling traffic police to handle incidents quickly and accurately. This allows for rapid clearance of the scene to restore traffic flow while preserving valid evidence of the incident, contributing to a safer and smoother traffic environment. When courts adjudicate road traffic accident cases, dash cam evidence enables more precise sentencing and compensation decisions, while also providing insurers with documentation for claims settlement. In encounters with professional scammers or highway robbers, dash cams can provide decisive evidence for solving cases - including accident scenes and perpetrators' physical characteristics.
10
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.