What to do with blank display window in 2008 Highlander?

If you have a blank display window in your 2008 Highlander, start by checking the vehicle's fuses to ensure none are blown, particularly those related to the display or audio system. If the fuses are intact, try resetting the system by disconnecting the battery for a few minutes and reconnecting it. If the issue persists, it may be a sign of a malfunctioning display unit or wiring issue, and you might need to consult a professional mechanic or an automotive electrician for further diagnosis.