when my car is cold the power stering makes noise, but as soon as it gets hot the noise stops. can anybody tell me what it could be

 

its most likely the power steering pump...i had the same problem and the dealer replaced it under warranty...it happened when the car was juss started and when u turn the steerin wheel does it gets louder??? i think u could like pinch the hose with ur hand and see if u still hear it...the dealer did it to mine and made the noise but faintly..mine was changed at about 31500 miles

 

just at the beginning

 

what is the factory warranty on tis cars