Santa Fe 2015 sport, 2.4 litre engine, driver seat heating issues

Hello,
I am having issues with the heated driver seat, not working in my car. The
passenger seat works well and heats up well. All the lights are solid for the
heat on the passenger side whereas the heat indication light "keeps blinking"
on the driver side.

I called the dealership and they want $135 plus tax per hour for diagnostics
and my current unemployment status does not allow me to spend the money.

I would appreciate any help on this.

regards,

Sunny