Repair Procedures: Adjustment

Disconnect the battery negative terminal.
Remove the crash pad lower panel.
(Refer to Body - "CRASH PAD LOWER PANEL ")
Remove the knee airbag (KAB) module.
(Refer to Restraint - "KNEE AIRBAG (KAB) MODULE ")
Confirm the gap (A) between stop lamp switch and bracket.
Stop lamp clearance (A):

1.0 - 2.0 mm (0.0394 - 0.0787 in.)

Courtesy of KIA MOTORS AMERICA, INC.
If the gap between stop lamp switch and bracket is not between 1.0 - 2.0 mm (0.0394 - 0.0787 in.), check the mounting clip and other parts around the stop lamp.
If everything is normal, reinstall the stop lamp switch and check the clearance again.