Anytime I've ever heard a humming noise when turning the steering wheel on any vehicle,It has always been due to low power steering fluid
Many things can cause that, the simplest cause being lack of power steering fluid.
ummm power steering
Check and see if your power steering fluid level is low.
A bad bearing can cause can the front end of car to make a squeaking noise when turning steering wheel either direction. It can also be caused by bad suspension.
power steering fluid not filled?
you have a bad power steering pump get a new one
ball joints or tie rods
A whining noise present when turning the steering wheel indicates a faulty power steering pump. As the pump fails, it allows air to enter the system and a distinct whine.
soounds like steering wheel fluid needs to up
Notchy feel when turning the steering wheel Noise from the pump area when wheels are turned Possible stiffness when turning steering wheel.
cos its a renault