Sometimes the adapter cable is easily missed for your Hazard Light Switch. This adapter cable can be found on the side of your 4Runner's factory head unit.
This adapter needs to be removed from the factory head unit and reinstalled/connected to your Hazard Light Switch and our harness for it to work. Alternatively, if you are still experiencing issues with your Hazard Light Switch, please feel free to contact our support team and we will happily assist you.
