···
Log in / Register

What to Do When Rearview Mirrors Are Unclear in the Rain?

5 Answers
AnnieLynn
07/29/25 5:01am

Solutions for unclear rearview mirrors on rainy days are as follows: 1. Rearview Mirror Heating Function: Many modern cars are equipped with a rearview mirror heating function, which uses embedded heating wires behind the mirror to raise the surface temperature, accelerating water vapor evaporation. 2. Install Rain Guards: Not all cars have heated rearview mirrors. For vehicles without this feature, installing rain guards is an option. These can keep the mirror clear in light rain and ensure at least one-third visibility in heavy rain. 3. Apply Water Repellent: The main component of water repellent is silicone oil, which alters the surface tension of the glass, making the rearview mirror water-resistant. After application, rainwater forms round droplets that can be easily shaken or blown off. However, reapplication is needed every few months. 4. Use Laundry Detergent or Soap: Apply a clean, wet cloth or sprinkle laundry detergent, then spread it evenly on the rearview mirror. Wait a few minutes for it to dry, then wipe clean with a tissue. This method is not suitable for long-term use but is convenient and low-cost.

Was this review help?
9
4
Share
OChristian
08/12/25 6:16pm

It's really annoying when the rearview mirror is unclear during rain. When I encounter this situation, I usually pull over and park safely first—safety comes first. Then, I try wiping the mirror with soapy water or a water-repellent spray, which makes the rainwater slide off instead of clinging. If the car has a rearview mirror heating function, turning it on can dry the raindrops and even prevent frost in winter. I keep a small towel in the trunk for quick wipes—it's convenient and cost-effective. Make it a habit to check the rearview mirror's condition and apply a simple maintenance treatment, like a hydrophobic coating, before the rainy season to avoid last-minute troubles. In short, don’t compromise on safety—if visibility is poor, pull over and fix it before driving. Don’t risk driving just to save time; peace of mind comes from driving safely.

Was this review help?
16
4
Share
Expand All
StAlessandra
10/03/25 5:05am

It's quite frustrating when the rearview mirror gets blurry while driving in the rain. First, I stay calm, slow down, or find a place to pull over. I turn on the car's defogging function to let the air conditioner blow on the windshield—sometimes it helps remove rainwater from the side mirrors as well. Regularly check if the car's electric heated mirror function is working properly. My car has this feature; pressing the button for a few seconds evaporates the raindrops. If all else fails, I roll down the window and wipe off the rainwater with a tissue—it's a bit troublesome but effective. Remember not to rush into changing lanes or overtaking; clearly seeing the surroundings is key. Usually, I recommend practicing driving in the rain more often to get familiar with changing rain conditions, which helps better handle similar situations and ensures safety for yourself and others.

Was this review help?
14
2
Share
Expand All
HarmonyRose
11/16/25 6:44am

On rainy days when the rearview mirror gets blurry and affects visibility, my first instinct is to turn on the heated mirror function, which many cars are equipped with. Water accumulates on the mirror due to surface tension, and heating it causes the water to evaporate, making it clear again. If your car doesn't have this feature, try pulling over and wiping the mirror dry with a clean cloth. Alternatively, applying a rain repellent spray beforehand can help water slide off without beading up. The key is not to panic while driving—if visibility is poor, downshift and slow down, then safely pull over to the right to address the issue.

Was this review help?
9
0
Share
Expand All
VanSimon
01/06/26 8:21am

I've learned my lesson from not being able to see clearly through wet rearview mirrors on rainy days. Now I take preventive measures - I always keep the mirror heating function on when available, and use the air conditioning system to help dehumidify. For mirrors without electric heating, I recommend applying a waterproof film or installing special rain deflectors. When visibility is poor on the road, don't panic; my habit is to pull over safely to deal with it. Here's a little trick: adjust the mirror angle after starting the car to minimize water droplet accumulation. I regularly clean the mirror surfaces to prevent oil buildup, making rainy day driving less troublesome and more comfortable.

Was this review help?
14
3
Share
Expand All
More Forum Discussions

Is It Illegal to Convert Naturally Aspirated to Supercharged?

Converting to a supercharger is illegal. A turbocharger consists of an intake side, an exhaust side, and bearings. The exhaust gases expelled after the engine's work drive the blades on the exhaust side of the turbocharger, which in turn, through the bearings, drives the blades on the intake side to increase the intake air volume and improve combustion efficiency. Therefore, modifying a turbocharger affects the engine. Below are the specific impacts: 1. Turbo Lag: Since the blades are driven by exhaust gases, when the engine speed is low and the exhaust gas volume is insufficient to drive the blades, it affects the efficiency of intake and exhaust. However, as long as the turbo size matches the engine displacement appropriately, this impact will not be too noticeable. Another impact is on the engine's lifespan, which depends on the boost pressure, peripheral configurations (fuel supply, ignition, cooling, ECU tuning, etc.), and the reinforcement of the engine block. If these aspects are well addressed, the impact will be minimal, with the most critical factor being the quality of the workmanship. 2. Performance Impact: There is also the impact on performance. Heat engines rely on combustion to perform work, with fuel and oxygen being two key factors determining the intensity of combustion. The function of a turbocharger is to increase the air volume (i.e., oxygen content) in the cylinder during combustion. As long as the fuel supply and ignition are properly matched, there will be a certain improvement in engine performance. Moreover, turbochargers utilize the kinetic energy of exhaust gases to work, which, from a physical perspective, is an excellent method to enhance work efficiency.
14
4
Share

Where to Put the Bag During Subject 2 Driving Test?

On the test day, it is advisable not to bring a bag. If you must bring one, you can ask your instructor or a familiar fellow student to temporarily look after it. Subject 2, also known as the small road test, is part of the motor vehicle driver's license assessment and refers to the field driving skills test. For small vehicles (C1, C2), the test items include five mandatory components: reversing into a parking space, parallel parking, stopping and starting on a slope, turning at a right angle, and driving through curves (commonly known as S-turns). Below is an introduction to other test subjects: 1. Subject 1: Also known as the theoretical test or driver's theory test, it is part of the motor vehicle driver's license assessment. The test content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The test format is computer-based, with 100 questions, and a passing score of 90 or above. 2. Subject 3: Includes the road driving skills test and the safe and civilized driving knowledge test. It is part of the motor vehicle driver's license assessment and refers to the road driving skills and safe and civilized driving knowledge test for motor vehicle drivers. The content of the road driving skills test varies depending on the type of vehicle. 3. Subject 4: Also known as the theoretical test or driver's theory test, it is part of the motor vehicle driver's license assessment. The test consists of 50 questions, presented in the form of case studies, pictures, animations, etc., with a full score of 100 and a passing score of 90.
5
2
Share

What is the fuel consumption of a blue plate 4.2-meter truck?

The fuel consumption of a blue plate 4.2-meter truck is 13-15L. The blue plate is a small vehicle license plate, featuring white characters and borders on a blue background. This plate is installed on trucks with a total mass below 4500KG (excluding) and vehicles with fewer than 20 passengers (excluding the driver) and a body length under 6 meters (excluding). Below are the reasons for high fuel consumption: 1. Improper driving habits: Fuel consumption is closely related to the driver's habits, such as prolonged idling without turning off the engine or frequent ignition, aggressive acceleration or frequent braking, driving at low gear with high speed or high gear with low speed, etc. These habits significantly contribute to increased fuel consumption. 2. Abnormal tire pressure and tire wear: Low tire pressure increases friction between the tire and the ground, leading to greater resistance and higher fuel consumption. The normal tire pressure is around 2.5bar, which can be slightly reduced by 0.1bar in summer. However, tire pressure should not be too high either; it's best to maintain the standard value recommended for the vehicle. Additionally, severely worn tires can cause frequent skidding, also increasing fuel consumption. 3. Fuel quality and carbon deposits: Many drivers overlook fuel quality. Poor-quality gasoline can lead to increased carbon deposits, which roughen the intake pipe walls, affecting air intake and the quality of the air-fuel mixture, causing a sharp rise in fuel consumption. Therefore, gasoline quality should not be neglected. Regular maintenance at a 4S shop is a forward-looking investment, ensuring normal vehicle performance and saving unnecessary expenses in the long run.
2
4
Share

What cars does the Volkswagen Group manufacture?

Volkswagen owns Audi, Bugatti, Skoda, Bentley, and Porsche. Brand Introduction: Volkswagen (German: Volkswagen) is an automobile manufacturing company headquartered in Wolfsburg, Germany, and the core enterprise of the Volkswagen Group, one of the world's four largest automobile manufacturers. History of the Volkswagen Group: As one of the world's top ten automobile companies, it was founded in 1938 in Wolfsburg, Germany, by the world-renowned automobile design master Ferdinand Porsche. Volkswagen's business is primarily focused on automobile products, making it a multinational automobile group with activities in many countries worldwide. As the name suggests, Volkswagen produces cars for the masses.
16
2
Share

What are the requirements for medical waste transport vehicles?

Medical waste transfer vehicles are similar to operational vehicles such as buses and sanitation vehicles. Demand for medical waste transfer vehicles arises only in cases of vehicle scrapping, reaching the end of their service life for complete replacement, or increased usage needs, but the production volume is not expected to be large. Medical waste transfer vehicles: Also known as medical garbage transport vehicles, medical waste transport vehicles, medical garbage collection vehicles, medical garbage transfer vehicles, etc. Regulations: With the implementation of the "Plan" and the gradual establishment of disposal stations, the collection, transportation, and disposal of medical waste will become increasingly standardized. Medical waste transfer vehicles will continue to exist as a specialized vehicle category in the long term.
7
3
Share

Why does the steering wheel start shaking when the car reaches 80 km/h?

When the car reaches 80 km/h, the steering wheel shaking may be caused by the following reasons: 1. There is clearance in the chassis ball joint. When the vehicle is driving at high speed, there will be some play, which will cause shaking. Check the ball joint and replace the damaged one. 2. The steering wheel shaft is loose. Check the steering wheel system and replace any damaged parts. 3. The wheel dynamic balance is inaccurate. Perform dynamic balance for the tires. Precautions for performing dynamic balance for tires: 1. Do not touch the tire while it is rotating, otherwise it may be dangerous. 2. The inside of the tire should be cleaned, otherwise the balance weights may fall off.
4
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.