If that's the case, then I'd take it back to the dealer and leave it with them a few days when cold weather is expected. Since your paying in the neighborhood of .55 cents a mile for the first 36,000 miles to own it, let them earn it.
Is the car new or how many km's/miles has it done? Is the grunt a sort of a buzzing sound? Could be damage in the pump or the pump is drawing in air from somewhere.
www.powerbrakeandsteering.co.za
If it was ordered with power steering it would have it.
Bad power steering pump
* No power steering fluid in reservoir * The power steering pump is not operating
to my knowledge there is no power steering filter i would check my power steering fluid level
From what I understand, power steering in cars (vehicles) is simply to make steering the car easier. If it were not for power steering, you would have to use a lot more muscle to turn the steering wheel than you use when you have that power steering in place!
If you have an electric power steering system, that means you HAVE NO FLUID. Therefore no fluid to change in the 1st place.
could be several places, power steering hose, rack and pinion (or steering gear box) or power steering pump.
the most likely cause of that would be the power steering pump failing.
After bleeding the power steering the pump may make a noise because there isn't enough power steering fluid in it.
No power steering fluid, broken pump, or broken lines.
check the power steering fluid level. I would have to say your low on fluid.
You'd have some steering issues, and your power steering pump would eventually burn out.