What is the solution for the Ford Focus dome light staying on?

[VincentMarie]

Solution is to first open the rear door of the car. Sit in the middle position of the rear seats. Look upwards directly above the seat, where you'll find the dome light switch. There are three modes in total: [on] is the constant-on mode. When this switch is activated, the dome light will remain on continuously and won't turn off even after locking the vehicle. Reasons for the engine warning light to illuminate include: Poor fuel quality; Dirty engine cylinders with carbon deposits; Poor combustion condition; Engine knocking. Method to turn on Ford Focus lights: Pull the light control stalk on the left side of the steering wheel toward the instrument cluster to activate.