One of the most common causes of a warped dashboard is exposure to sunlight. Over time, the sun's ultraviolet rays can break down thedashboard's material, causing it to warp and become brittle. Another common cause of warping is extreme heat. If the temperature inside your car gets too hot, it can cause the dashboard to warp. This is especially true if the dashboard is made of plastic or vinyl. Finally, moisture can also cause a dashboard to warp. If your car's interior gets wet, either from rain or spilled fluids, it can cause thedashboardto swell and eventually warp.