Push the turn signal lever away from you and release, to turn the high beams on. To return to low beams, push the lever again or pull it toward you and release.

This indicator light turns on in the instrument cluster when the high-beam headlamps are on.
Exterior Lamp Controls
Flash-to-PassRetained Accessory Power Description and Operation Accessory Outlets
Retained Accessory PowerRAP Description and Operation Block DiagramK9Body Control ModuleK73Telematics Communication Interface Control ModuleA11RadioKR76Retained Accessory Power RelayHard-WiredSerial DataK9-Body Control ModuleK73-Telematics Communication Interface Control ModuleA11-RadioKR76-Retained ...