Hyundai Motor India — Xcent EPS manufacturing defect issue

Hi,
I have Xcent 2014 petrol model, Its mileage is only 7500 km.
I am having a problem of hard steering, On contacting the Kothari Hyundai, Kharadi Pune they told me that torque sensor has gone bad and i will have to pay around 25000/- to get it replaced.

I have searched online and offline it seems to ba a manufacturing defect in Hyundai cars, My car has run only 7500 KM and there is no wear and tear then how
can this internal part got damaged and why only the torque sensor
can not be replaced, its some issue with electronics( manufacturing defect ) as after clearing the error code it starts working for some time.

Kindly help me resolving the issue and replace only the faulty parts rather than
the whole assembly costing 25000/-

Thanks
Regards
Arvind Kumar