What's the reason for the touch screen failure in the Regal?
4 Answers
The touch screen failure in the car's central control screen is most likely due to prolonged use of the screen, which causes many trivial files to occupy the system memory, leading to a crash. Reasons for failure due to prolonged use: The touch screen failure in the car's central control screen is most likely due to prolonged use of the screen, which causes many trivial files to occupy the system memory, leading to a crash. Corresponding solutions: Prepare a paperclip or a toothpick—something relatively hard—and then directly poke the RST hole (reset button) on the central control screen to restore it to its initial state. Just like reinstalling the system on a computer, after using it for a while, a lot of junk files will accumulate, and at this point, reinstalling the system can restore normal functionality.
My old Buick Regal also had touchscreen failure issues before, most noticeable after summer sun exposure. When the screen overheated, it often became unresponsive, but it improved after replacing the heat insulation film. Remember to first check if the film has bubbles, as low-quality films can deform under heat and press against the screen. Then try a forced restart by holding the HOME button on the center console for about 15 seconds until the infotainment system goes black and reboots. If it works after restarting but fails again the next day, it's likely due to a loose ribbon cable connection. Attempting to disassemble it yourself can easily damage the clips, so it's best to seek professional help. Try to avoid exposing the screen to direct sunlight, as high temperatures are particularly damaging to touchscreens.
Just helped my cousin deal with a Buick touchscreen issue last week. Focus on checking three areas: Condensation from the air vent blowing directly on the screen can cause malfunction; Using low-quality chargers plugged into the USB port may lead to unstable screen voltage; For system freezes, press and hold the volume knob for 10 seconds to force a reboot. For newer Regal models with OTA, remember to disable automatic updates, as some owners reported touchscreen failure after interrupted updates. Another unconventional method is to clean the screen edges with alcohol pads, as static electricity can sometimes interfere with touch. If all else fails, visit the dealership to flash the module firmware, as some issues are caused by system bugs.
Don't rush to replace the entire touchscreen assembly when it malfunctions. Based on my experience, wiring issues account for 70% of such cases. Open the glove compartment on the passenger side and check if the blue connector is loose—this terminal controls the touchscreen signal. If the screen fails during rainy weather, focus on inspecting the sunroof drainage tube, as leaks can flow down the A-pillar and short-circuit the center console. Malfunctions after car washes might be due to moisture seeping between the screen layers; try blowing warm air for half an hour. Drifting or erratic touches usually indicate aging of the touch layer, requiring a screen module replacement. For those with DIY skills, consider purchasing used parts online for replacement, as OEM parts can cost as much as an iPad.
