What is the reason for incomplete display of tire pressure monitoring LCD screen when exposed to sunlight?
4 Answers
Solar-powered models generally do not suffer from insufficient voltage. If there is a power shortage, the screen will either go black or appear dim overall. If the display is normal when not exposed to direct sunlight, then the issue lies in the poor high-temperature performance of this LCD screen, which affects the display quality but does not impact the monitoring function. Below are the specific functions of tire pressure monitoring: Preventing accidents: The tire pressure monitoring system is an active safety device that can alert the driver in time when there are signs of danger in the tires, prompting them to take appropriate measures to avoid serious accidents. Extending tire lifespan: It ensures that tires always operate within the specified pressure and temperature range, thereby reducing tire damage and extending their service life. Improving driving economy: When the tire pressure is too low, the contact area between the tire and the ground increases, leading to higher friction resistance. When the tire pressure is 30% below the standard value, fuel consumption can increase by 10%.
The incomplete display of the tire pressure monitoring LCD screen after prolonged sun exposure is mainly related to the characteristics of the liquid crystal material. At high temperatures, liquid crystals lose their normal alignment, causing some areas to turn black or become blurry. I’ve personally experienced this while driving—when the temperature inside the car soared to 40-50°C under the scorching sun, the screen malfunctioned. This could also be due to the backlight components expanding from heat, resulting in poor contact, or unstable voltage on the circuit board. Prolonged sun exposure accelerates the aging of electronic components, especially in older vehicles. I recommend parking in shaded areas whenever possible or using a sunshade to protect the dashboard area. Regularly inspect temperature-sensitive components of the vehicle—for example, the screen may also be slow to respond during cold winter starts, indicating that environmental temperature has a significant impact. If the screen displays incompletely, don’t rush to replace it; first let the car cool down and check if it returns to normal.
I experienced the tire pressure monitoring screen displaying garbled characters after prolonged sun exposure, likely caused by heat-induced deformation of the internal screen film. LCD screens aren't as heat-resistant as regular displays, and prolonged exposure to sunlight can easily lead to pixel failure and incomplete display content. Another reason is the expansion of plastic components in the connecting circuits, which loosens contact points and prevents current flow, causing issues. This is related to the vehicle's air conditioning system – internal heat accelerates the aging of electronic components and shortens the display screen's lifespan. I've found that parking the car in a garage or shaded area during summer effectively avoids this problem. It's also important to check the dashboard status after parking. If the issue occurs frequently, professional inspection or screen component replacement may be necessary, as it relates to driving safety. Don't overlook simple maintenance; it can save a lot of trouble.
The tire pressure monitoring screen displays incompletely when exposed to direct sunlight, which is a common LCD malfunction in high-temperature environments. High temperatures disrupt the movement of liquid crystal molecules, leading to abnormal display. I recommend first parking the car to let it cool down and see if the screen returns to normal. Then, check the screen surface for any physical damage, such as cracks or scratches. Loose connection points due to heat exposure may also cause intermittent display. It's also crucial to check if the vehicle's circuit fuses are intact, as prolonged exposure to sunlight may blow a fuse and cause malfunction. Regularly cleaning the dashboard dust and ensuring good ventilation can reduce heat buildup. Simple maintenance can prevent major repairs, and parking location is key—finding a shady spot is ideal.
