Hyundai Elantra: Removal - Hazard Lamp Switch. Repair procedures - Lighting System - Body Electrical System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Removal

1.
Disconnect the negative(-) battery terminal.
2.
Remove the heater control module.
(Refer to the HA group - "Controller")

    Inspection
    1. It will be able to diagnose defects of hazard switch with GDS quickly. GDS can operates actuator forcefully, input/output value monitoring and self diagnosis. ...

    Installation
    1. Install the heater control module. ...