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Likely causes
- 1Click or creak: ball joints and links
- 2Hiss or whistle: hydraulic power steering
- 3Noise at full steering lock
Checks to perform
- Check the power steering fluid level in the reservoir.
- Note the type of noise (click, hiss, creak, clunk).
- Look for oil leaks near the shocks and under the steering reservoir.
- Steer at low speed in an open space: reproduce the noise safely.
A noise when turning the wheel can come from the steering, suspension or drivetrain. The type of noise (click, hiss, creak, clunk) and when it appears (low speed, reverse, full lock) point to the source.
Click or creak: ball joints and links
A metallic click on each wheel turn in tight steering often signals a worn ball joint. A creak at low speed can come from suspension bearings, especially at the front.
Hiss or whistle: hydraulic power steering
A hiss or whistle when steering points to the power steering pump low on fluid or with air in the system. Check the fluid level in the reservoir and look for leaks.
Noise at full steering lock
A clunk when turning the wheel to full lock is normal in some hydraulic power steering under load, but if excessive the pump may be worn or the level low.
Wheel bearing
A hum or rumble that rises with speed (not only when steering) and changes intensity cornering often indicates a worn wheel bearing.
Shock absorbers or springs
A dull thud over bumps or when braking, amplified cornering, signals a worn shock or mount. Visually check for oil leaks on the shocks.
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