The multifunction turn signal/hazard switch is broken.

Replace the multifunction turn signal/hazard switch. Refer to Multifunction, Turn Signal and Hazard Switch Replacement - On Vehicle .

The multifunction turn signal/hazard switch is mounted loosely.

Install the multifunction turn signal/hazard switch correctly. Refer to Multifunction, Turn Signal and Hazard Switch Replacement - On Vehicle .

Foreign material is present.

Remove the foreign material.