Power steering for audi a4

Power steering for audi a4 DEFAULT

 

One of the most common problems that happens with a vehicle over time is it’ll begin leaking power steering fluid.  Your Audi A4‘s power steering fluid runs through your power steering pump, and all throughout the steering system.  

Without the power steering system, your A4 would be very difficult to drive.  Most of the weight of the vehicle is absorbed by the power steering system, making it feel much lighter than it really is.

 

Power Steering Fluid Leak Audi A4

 

Power Steering Leak Symptoms:  Audi A4

Here are the most common symptoms of a power steering leak in your A4:

  • Fluid on the Ground–  The first symptoms of a power steering leak will be when your Audi starts dropping fluid on the ground.   As long as the leak isn’t bad enough, this will be the only symptom.  But, if you let it go too long, it’ll begin to make noise.
  • Whirring Noise–  If your power steering system is critically low on fluid, you’ll begin to hear your A4 make a whirring noise.  This is the sound of the pump not having enough power steering fluid to cycle through the steering system.  It’s only a matter of time before there is no fluid left at all and your A4’s steering wheel feels heavy.
  • Hard to Steer–  At this point enough power steering fluid has leaked out of the system so that the pump can no longer do its job.  Modern vehicles are not made to be driven without power steering.  Their close ratio steering makes them very hard to operate without power steering.

 

Audi A4 Leaking Power Steering Causes

Audi A4 Power Steering Fluid Leak Diagnosis

1. Power Steering Hose

The first thing that you would want to do is look around the power steering hoses for any obvious signs of a leak.  The power steering hose will run from the pump to the rack or gear.  The most common place that the hose will leak from where the metal part of the hose meets the rubber.  Look for power steering fluid on or below it. 

 

2. Power Steering Pump

Your A4’s power steering pump pushes the hydraulic fluid through power steering hoses and through the steering rack or gearbox.  It is turned by the serpentine belt attached to the engine.  The pump can wear down over time.  When it does it can begin to leak power steering fluid under the engine.

 

3. Rack or Gearbox

There are seals in the rack or gear box that can go bad over time and leak.

 

4. Cooler

On some makes and models there will be a power steering cooler.  It’s easy to determine if there is a cooler.  You’ll see lines running from the power steering pump to the radiator.  It will look like a smaller radiator.

 

A4 Power Steering Fluid Leak Fix

Fixing the power steering fluid leak in your A4 is a pretty straight forward process.  You’ll want to try and find the leak.  

  1. First, take a look at the power steering lines, they most commonly leak where the metal meets the rubber on the line.  Replacing the line will stop the leak.  If you have a power steering cooler, you’d want to follow the lines there as well.  Hoses are cheap.
  2. After that, the power steering pump itself would what you would want to take a look at.  A leaking power steering pump is easy to identify.  Unless it’s leaking from the very bottom, it’ll be covered in fluid.
  3. Seals in the rack and pinions or steering gear box can and do go bad over time.  The leak should leave fluid further back than the power steering pump.  This is the last thing that you would want to look at in terms of likelihood of it being the problem, as well as cost/effort to fix.

 

Conclusion

Good luck finding your Audi A4’s power steering fluid leak.  If there is anything that you would like to add, please feel free to leave a comment below.

Categories Audi A4Sours: https://www.700r4transmissionhq.com/audi-a4-power-steering-fluid-leak/

Thread: Power steering location

  • 02-03-2018 10:11 AM#1

    Power steering location

    Hi all,

    I am having stiffness while steering my 2013 A4 2.0T around turns. Trying to locate the power steering fluid container and can’t seem to find it.

    Did a google search and I don’t have anything in the lower right hand side beside the coolant reservoir. Any ideas where it might be ?


    Sent from my iPhone using Tapatalk

    Last edited by new_era_inc; 02-03-2018 at 10:28 AM.


  • 02-03-2018 12:04 PM#2

    2013 should be the first year Audi started using electric steering on the A4. So you wont have any fluid to check.

    2011 B8 A4 ZF8HP Daily Driver 120k miles// JHM K04 w. APR tune // Bilstein pro-kit // Meth Injection // RS5 Rear Sway Bar // Kenwood-Dayton-Audison custom sound system // Flat bottom wheel w. paddles


  • 02-03-2018 12:22 PM#3

    QuoteOriginally Posted by A4xView Post

    2013 should be the first year Audi started using electric steering on the A4. So you wont have any fluid to check.

    I just read that in the manual. Thanks.


    Sent from my iPhone using Tapatalk

  • 02-04-2018 06:51 AM#4

    We recently had an issue with stiff steering along with "notchy" steering and had the electric steering rack in our 2013 replaced under our extended warranty. All issues are now solved and feels so much better.


  • 02-05-2018 06:23 AM#5

    QuoteOriginally Posted by TyintegraView Post

    We recently had an issue with stiff steering along with "notchy" steering and had the electric steering rack in our 2013 replaced under our extended warranty. All issues are now solved and feels so much better.

    Unfortunately my warranty has expired. I called the dealership to check if there’s any recalls. No luck.


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  • 02-06-2018 08:36 AM#6

    Could be steering shaft binding. the part is cheap $60. and then about $600 with labor. If it' becomes stiff at certain angles, it's more likely the the shaft's U-join is binding.


  • 02-09-2018 08:34 PM#7

    QuoteOriginally Posted by sergeyoView Post

    Could be steering shaft binding. the part is cheap $60. and then about $600 with labor. If it' becomes stiff at certain angles, it's more likely the the shaft's U-join is binding.

    Thanks. I’ll look into it. Audi wants $150 to check the steering to see if anything is covered I might just do it to see if there’s a problem.


    Sent from my iPhone using Tapatalk

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    2004 Audi A4 Quattro - Power Steering Fluid - Vehicle Specific

    Power steering fluid is a hydraulic fluid that is used to pressurize the steering system. Your power steering system helps you turn your steering wheel more easily. Checking your power steering fluid regularly is the easiest way to maintain your power steering system. Possible signs of low power steering fluid include a whining, squealing, or clunking noise when steering. At O'Reilly Auto Parts, you can use our “Select A Vehicle” feature to enter your make and model and find the right type of power steering fluid for your car.

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    Steering for audi a4 power

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