How come does off and on switch flashes on gear lever for?

The off and on switch indicator on a gear lever typically flashes to signal the activation or deactivation of a specific driving mode, such as sport or eco mode, or to indicate that the vehicle is in a temporary state, such as when the transmission is shifting or the system is recalibrating. This flashing light serves as a visual cue to the driver that the vehicle's settings are changing or that there may be an issue requiring attention. If the light continues to flash without a clear reason, it may be advisable to consult the vehicle’s manual or a professional mechanic.