Hi guys, I think its the time for me to update this thread.
I have been complaining about the heavy steering of my 2010 WagonR kseries from the date of purchase.At last, after so many complaints both to the dealer and Maruti,they replaced my whole steering column(this time including the motor ) last week under warranty and now it is a lot lighter.Now the steering has return too.
Now there is no problem with the steering including noise and vibrations which i felt earlier.
They said it was a manufacturing defect with the previous power steering assembly.
But sadly it took almost two years for them to accept the complaint