JEEP GRAND CHEROKEE HAZARD LIGHT NOT WORKING

Everyone Says It Is The Flasher Relay, But It Is Not. I Have Tried Four And None Work. All Fuses Are Good. What Can It Be?

First Got Jeep, Vic Had Brake Lamp Failure & Coolant Level Sensor Codes. Looked On Line To See How Much Coolant Level Sensor Is & Jeep...