On a 3 hour drive last night, the footwell lights kept going from their normal setting - let's assume 5% - up to full brightness. This lasts for about a second, and it's all four corners.

 

Anyone had this before? It happened about 10 or 12 times last night.

Mine did it once the other evening, no clue why.

Mine did it one night, several times but only noticed it that one occasion.