What's wrong with vsc light in my Toyota Avalon?

[Danilewort]

Hi all,
Something wrong with my car. The VSC and VSC Off lights remain on in my 2002 Toyota Avalon with 40k miles after I start the car. The check engine light is NOT illuminated and no codes are present when confirming with a code reader. And the gas cap is on tightly and I pressed the VSC on/off button below the steering wheel and it doesn't affect the light.

Any ideas on what could cause both VSC lights to display? Thank you in advance.