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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 01-06-2011, 12:45 PM
thecushion thecushion is offline
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How to check power steering fluid

Hi, I have searched for about an hour on this. I have an 02 540. Sorry if it sounds dumb,but would you pleae tell me how to check my power steering fluid? I know where to check,but what should the reading be on the plasic dip stick hot/cold? I had a liitle leak and have fixed that and want to be on the safe side. Thanks
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  #2  
Old 01-06-2011, 12:52 PM
cn90 cn90 is offline
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At the very bottom of this link, you will see the owners manuals in pdf:
http://www.e38.org/e39/
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  #3  
Old 01-06-2011, 12:58 PM
thecushion thecushion is offline
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Its not in the manual.
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  #4  
Old 01-06-2011, 01:12 PM
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From the e38 owners manual which has the same (ATF) regular power steering reservoir design...(ignore the Self Leveling Pentosin (hydraulic) fluid info in the middle column)



From the BMW TIS:

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2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg

Last edited by QSilver7; 01-06-2011 at 01:33 PM.
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  #5  
Old 01-06-2011, 01:13 PM
cn90 cn90 is offline
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Quote:
Originally Posted by thecushion View Post
Its not in the manual.
Wow, you are correct, damn BMW engineers for failure to include that in the owners manual!!!
http://www.e38.org/2002Manual-5ser.pdf

This link may help you:
http://www.bimmerfest.com/forums/sho....php?p=4631702

In my car, the PS fluid is about 1 inch below the PS reservoir NECK.

Here is a pic if you want to be more precise:

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  #6  
Old 01-06-2011, 02:08 PM
thecushion thecushion is offline
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Quote:
Originally Posted by cn90 View Post
Wow, you are correct, damn BMW engineers for failure to include that in the owners manual!!!
http://www.e38.org/2002Manual-5ser.pdf

This link may help you:
http://www.bimmerfest.com/forums/sho....php?p=4631702

In my car, the PS fluid is about 1 inch below the PS reservoir NECK.

Here is a pic if you want to be more precise:

Thanks for the info. On the photo it seems as the min/max lines are wrong.
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  #7  
Old 01-06-2011, 03:06 PM
cn90 cn90 is offline
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Quote:
Originally Posted by thecushion View Post
Thanks for the info. On the photo it seems as the min/max lines are wrong.
LOL,

I think they meant MIN and MAX air space above the fluid LOL!
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  #8  
Old 01-06-2011, 05:19 PM
thecushion thecushion is offline
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Ok so would the bottom line be good when engine is cold and the top line when engine hot? Sorry I just want to be clear on this. Thanks
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  #9  
Old 01-06-2011, 06:35 PM
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The 2 lines below are taken from 2 BMW sources that are in post #4 above...do you need more clarification from any of the two quotes below?
  1. "The fluid level should be in between the marks on the dipstick"
  2. "On a stationary engine top up the fluid reservoir to the MAX mark on dipstick"
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Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg
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  #10  
Old 01-06-2011, 08:09 PM
filon102 filon102 is offline
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question of the day: how do you change the PS fluid?
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  #11  
Old 01-06-2011, 08:24 PM
cn90 cn90 is offline
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Quote:
Originally Posted by filon102 View Post
question of the day: how do you change the PS fluid?
The Simple way:
- Turkey baster (or syringe) to suck PS fluid out in a container.
Do this until it is dry.
- Fill with your favorite PS fluid (Dexron-III).
- Start engine, turn the Steering all the way R and L a few times to expel any air.
- Shut the engine.
Repeat this cycles a few times so most of the fluid is fresh.

The Complex way is via the steering rack line disconnect but that is more labor, so keep it simple as above.
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  #12  
Old 01-06-2011, 08:30 PM
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bmw_n00b13 bmw_n00b13 is offline
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It's in my manual.
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  #13  
Old 01-06-2011, 08:51 PM
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Quote:
Originally Posted by cn90 View Post
Here is a pic if you want to be more precise:
That's a good one for the power steering fluid thread.
- BMW E39 fluid summary printout for your glovebox (1)
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  #14  
Old 01-06-2011, 08:58 PM
mujjuman mujjuman is offline
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Make sure you use ATF and not conventional power steering fluid
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  #15  
Old 01-06-2011, 09:06 PM
franka franka is offline
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Use your best judgement. Fill it until the fluid is coming well up the first curve on the side of the container. It doesn't have to be precise and the fluid doesn't expand so you could theoretically fill it to near the top.

The idea is to have fluid in it at all times.
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  #16  
Old 01-06-2011, 09:09 PM
franka franka is offline
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that is solved so now lets dicuss the silly and poorly placed change holder.
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  #17  
Old 01-06-2011, 10:06 PM
thecushion thecushion is offline
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Thanks everyone lets move on........................
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  #18  
Old 01-07-2011, 05:23 AM
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One other comment ... from my research (only) ... there is no longer such a thing as "Dexron III".

Apparently this is because only GM does the certification , and reputedly, GM no longer certifies Dexron III (in favor of Dexron VI certification).

So, the story goes, if you can't find Dexron III (presumably which is "old stuff"), then you can certainly use Dexron VI.

Or so they say ...
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  #19  
Old 11-30-2011, 04:32 PM
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Edgy36-39 Edgy36-39 is offline
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Found this b/c I need to top off. FWIW, Mike Miller recommends Red Line Syn Power Steering fluid.
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  #20  
Old 12-01-2011, 01:33 AM
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Quote:
Originally Posted by Edgy36-39 View Post
Mike Miller recommends Red Line Syn Power Steering fluid.
I'll add that useful information to the bestlinks ...

- Power steering fluid (1) (2) & power steering fluid flush DIYs (1) (2) (3) (4) & volumes (1) & how to clean the power steering fluid reservoir internal filter (1) (2) & how to replace the cap o-ring (1) (2).

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