Whats cause of sueeling noise during turnung steering wheel

possible reasons for this issue:

CV Joint Issues: The clicking sound during turns could be related to the constant velocity (CV) joints. These joints allow the wheels to transfer power from the transmission to the wheels while maintaining flexibility during steering. If a CV joint is worn or damaged, it can produce clicking sounds. Inspect the CV joints for any signs of wear, such as torn boots or visible damage.

Wheel Bearing Problems: Faulty wheel bearings can also cause clicking noises during turns. A worn-out wheel bearing may produce a clicking or grinding sound. Check for any play or looseness in the wheel when jacked up. If you notice excessive play, it's likely that the wheel bearing needs replacement.

Suspension Components: Inspect the suspension components on the driver's side. Loose or worn-out components, such as control arms, bushings, or sway bar links, can create clicking sounds when the vehicle turns.

Steering System: Check the steering system components, including the tie rods, steering knuckles, and steering column. Damaged or worn parts can lead to clicking noises during turns.
Brake Caliper Issues: Sometimes, a loose brake caliper or worn brake pads can cause clicking sounds. Ensure that the brake caliper bolts are properly tightened and that the brake pads are in good condition.

Axle Shaft: The axle shaft connects the transmission to the wheels. If there's damage or wear on the axle shaft, it can result in clicking noises. Inspect the axle shaft for any signs of damage.
Here are some steps you can take to diagnose and address the issue:

Visual Inspection: Jack up the vehicle again and inspect the components mentioned above. Look for any visible damage, loose parts, or signs of wear.

Test Drive: Take the car for a test drive and pay attention to when the clicking sound occurs. Does it happen during slow turns, sharp turns, or both? This information can help narrow down the cause.
Professional Inspection: If you're unable to identify the issue, consider taking the vehicle to a qualified mechanic. They can perform a thorough inspection, diagnose the problem.

find a shop with ears, we have none

just like gold it is found where you find it.
noise parked , is x100 times more safe and easy to find than only car moving nose
use card board tube on ear and walk everywhere and find it>?
first places is underhood, most time.
get the car serviced in a real shop, and be safer?

What year is your Megane? The second generation model from 2002 onwards is know to have power steering issues. It usually involves the steering column being replaced and the electronics may also need to be reset. You'll need to get the whole system checked as the actual steering rack itself can also cause issues.
Is it doing anything else when you turn the steering? Is it making strange noises or vibrating as you hold it during a turn? Does the steering get easier at higher speeds?

What you may be hearing is the stone guard (metal plate) behind the brake rotor. It may have been bent slightly during the removal/replacement of the wheel bearing, causing it to contact the rotor while in motion. It poses no imminent danger, but it is annoying.

this might help:
Here is the Technical Service Bulletin that maybe of help, worth looking into but can't guarantee that it would fix your problem Steering - Steering Column Clunking When Turning TECHNICAL Bulletin No.: 01-02-32-001P Date: November 25, 2009 Subject: Clunk Felt/Noise Heard From Steering Column, Steering Gear and/or Front Of Vehicle During Turning Maneuver and/or Steering Wheel Rotation (Replace Intermediate Shaft As Directed) Models: 2001-2004 Buick Regal 2005-2008 Buick Allure (Canada Only), LaCrosse 2000-2008 Chevrolet Impala 2000-2007 Chevrolet Monte Carlo 1998-2002 Oldsmobile Intrigue 2004-2007 Pontiac Grand Prix Supercede: This bulletin is being revised to add the 2008 Buick LaCrosse/Allure. Please discard Corporate Bulletin Number 01-02-32-001O (Section 02 - Steering). Condition Some customers may comment on a clunk type noise coming from the front of the vehicle while driving during a turning maneuver.
1. Locate a large area (parking lot) where the vehicle can be turned in a tight circle. 2. Turn the steering wheel to the right and/or left all the way to the steering lock, then off the steering lock a 1/4 turn. 3. Drive the vehicle approximately 5 km/h (3 mph) in a circle, preferably over rough pavement or seams on the road surface. 4. Drive the vehicle straight ahead at idle speed while applying and releasing the brake pedal. Listen/feel the steering wheel for the clunk/noise condition. 5. If a clunk is felt in the steering wheel, the MOST likely cause is the I-shaft - not the steering gear. Continue with the correction. Correction DO THIS - Replace the intermediate shaft DON'T DO THIS - DO NOT lube the intermediate shaft Replace the existing intermediate shaft

This is caused by a bad wheel bearing. to locate the right wheel jack the front wheels up and check for the wheel being loose, or with car jacked up in the air with front wheel off the ground put it in drive and see if you can listen for the noise, you may be right with the right front but just double check, good luck, hope this is helpful.

I had this same problem and the dealer could not reproduce the noise when I would take it in to get looked at. (during the day when the temperature was warm) So I decided to leave it over night and they test drove it in the morning when the temperature was cold and they heard the noise. It ended up bing the steering rack.

Some 99+ GM vehicles have problems with the intermediate steering shaft. There is a special grease that goes in the shaft but on some it leaks out and causes a "clunking" or vibration in the steering. If it is leaking power steering fluid then that can be solved by finding the source and replacing the part. The pump could leak, the line from the pump could leak and the steering rack itself could leak. Need to find out which one is the problem first.

A clunk during acceleration is likely in the drive train. Could be a loose universal joint or a lot of play in the differential.

These trucks are notorious for ball joints that make all kinds of noise. Start by inspecting the ball joints while someone turns the wheel side to side.

1. Jack up truck so wheels are free from ground.
2. With engine off turn wheel side to side and listen for your noise.
3. If you are not detecting the noise during this test the noise maybe in your power steering system.

Also note that sometimes the ball joints may not make noise unless the wheels are on the ground and loaded. In this case rocking the wheel should expose the location of your noise.