2008 Toyota Sienna stability control problems

While passenger side visor is down smoke starts pouring out from under the head liner. When the visor is placed back in the closed position smoke clears out and stops. Per the mechanic, a short in the electrical system has resulted in a melted electrical board and the entire head liner and electrical board needs to be replaced. The visor can not be used or the short may start a fire inside the vehicle. The vehicle was in motion when this occurred. Van filled with smoke quickly.

I was driving on the freeway at approximately 70MPH on dry asphalt on a sunny day when the stability control warning light came on along with rapid beeping. What was the most concerning was that the breaks activated twice causing me to have a near panic attack and I didn't think I had control of the vehicle. After a few seconds, the beeping stopped and I had full control of the vehicle again. There was no apparent cause for these safety features to have been engaged and no longer feel safe driving this vehicle.