Q: Power steering loss

asked by on

My car loses its power steering when driving at very low speed. It happens when I'm parking or doing a U turn from a standing still. The steering is fine during normal driving. It doesn't have any fluid leaks, and I have replaced the power steering pump and the O ring seal for the fluid reservoir. I've bled the system a few times. Do you know why this is happening and what I can do to fix it? Thanks.

Hi there, thanks for writing in about your 2001 Mercedes Benz ML430. This problem could be caused by a slipping belt or a faulty belt tensioner. The power steering pulley needs to be observed while the car is parked and in idle to see if its operation is notchy and not smooth. Notchy operation would mean the belt is slipping either from age or lack of sufficient tension produced by the tensioner. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and expertise to diagnose and repair the power steering issue so that the correct repairs and adjustments are made.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Power steering loss

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Power steering went out completely

Hi there. You might have a blown high pressure hose from the pump to the steering rack. The fluid is getting onto the exhaust system and may pose a fire hazard. I recommend you do not drive the vehicle, for...

Q: Had the steering rack replaced and now the steering angle sensor is acting up after a front end alignment.

Hi there. If the codes are coming on for the steering angle due to either the sensor failing or the plug not plugged in all the way. Check the harness on the steering sensor and see if its plugged in....

Q: Turbo producing white smoke

If it is going out and you get white smoke and you've gone to the intercooler and you see there is oil in it, that means oil seals on the turbo are going out. I would advise fixing it very...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...