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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 02-02-2011, 10:54 PM
texas97bmw texas97bmw is offline
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Intro to BMW Ownership - HELP!

Hi everyone... my name is Cody.

I just bought a 1997 BMW 528i e39 with 160k miles last week.

ASC light has been on since purchase

Red seatbelt/airbag light? Is on..

I was driving tonight (20 degrees) and my ABS light came on.
(I have read as many posts as i can, yet feel my situation is slightly different.

The CEL and BRAKE lights are NOT on. NOT ON.

The trans will NOT shift while in drive but WILL shift if done manually 1-2-3-D

Speedo and odometer WORK.

I HAVE NOT tested the ABS brake system to ensure it functions.

I have noticed that when i turn the steering wheel it makes a motorized noice similar to the one made by the trunk actuator.

I do not think it's the VANOS as i still have power all through RPMs.

..........

Do you guys think it is a dirty wheel speed sensor?

I read what the rear wheels effect and have deduced it is a front sensor...

HELP!?!?!? I will post a pic of dash lights later....
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  #2  
Old 02-02-2011, 11:33 PM
texas97bmw texas97bmw is offline
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Cruise control works
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  #3  
Old 02-02-2011, 11:38 PM
texas97bmw texas97bmw is offline
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The lights are on consistently, from the second i turn the key. They do not flash or turn off for any period of time.
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  #4  
Old 02-02-2011, 11:39 PM
texas97bmw texas97bmw is offline
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Sent from my DROIDX using Bimmer App
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  #5  
Old 02-03-2011, 07:37 AM
texas97bmw texas97bmw is offline
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Notice ASC light and ABS light are on.

Sent from my DROIDX using Bimmer App
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  #6  
Old 02-03-2011, 07:47 AM
texas97bmw texas97bmw is offline
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Just tested anti lock brakes and they locked up. No shudder.
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  #7  
Old 02-03-2011, 08:00 AM
Garrison5 Garrison5 is offline
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Were the ASC and Airbag light on when you test drove the vehicle? Asking to make certain the history is understood from your first drive to today.

The ASC and ABS may be related. Could be an issue with a wheel speed sensor up to the ABS module itself. My son's 99 528i has these lights pop on from time to time when the temperature drops and the roads are bad. This is usually for a brief period of time.

Start with the simple things. Check fuses. Pull wheel speed sensors and make certain they are clean. See if anything changes when it warms up. You may have bigger issues, but this eliminated the easy and cheap stuff.
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  #8  
Old 02-03-2011, 08:10 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by Garrison5 View Post
Start with the simple things
I agree.

Why not spend the ten or fifteen minutes to test the "diode voltage" & "resistance" (in both directions) of your four wheel speed sensors from the engine bay? At least that will confirm whether all four wheel speed sensors are good or not.

Also, why not test the steering wheel sensors?

All that is covered in gory detail in the canonical ABS control module threads.

As for the noise in your steering wheel, do a search (see details below) and you should find how to diagnose what it is as it's a common problem (not as common as the ABS and ASC light though).

As for the ABS and ASC light ... very many people have posted about it so let us know what your search found for you.

Teaching to fish ...
Here's one way to find information in about five or ten seconds:
  1. Click on the VERY best of E39 Link or in the E39 wiki common issues
  2. Press your browser "find" button (control f) (SEE NOTE 1)
    • NOTE 1: With Firefox, the slash (/) button, in addition to "control f", does the same search.
  3. Type the search word, e.g., "KEYWORD" (sans quotes) (SEE NOTE 2)
    • NOTE 2: The "F3" button will jump to the next find; the "Enter" button will open up the link.
At this point, the browser automatically jumps to the first find; otherwise what you typed is shown in red, usually on the bottom bar of the browser, indicating it was not found.

Once you've read those similar threads, if/when you still have questions, feel free to post either in those threads or back here to add value with your followup.
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  #9  
Old 02-03-2011, 08:37 AM
texas97bmw texas97bmw is offline
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Only the asc light was on when ever I purchased the vehicle.
I just purchased allen wrenches to check the speed sensors.
Going back to get the electronic parts cleaner and grease.
I'm not really comfortable with testing the voltage as I'm not too familiar with such a thing. I will however try it.

I am on my phone so I do not have those functions and if I search the application closes.
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  #10  
Old 02-03-2011, 09:36 AM
texas97bmw texas97bmw is offline
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  #11  
Old 02-03-2011, 09:56 AM
texas97bmw texas97bmw is offline
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Right front speed sensor is dirty... cleaned and replaced. Now going to do ohm test
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  #12  
Old 02-03-2011, 09:57 AM
texas97bmw texas97bmw is offline
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  #13  
Old 02-03-2011, 10:15 AM
texas97bmw texas97bmw is offline
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Does not appear to be the same location or pin type... ?
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  #14  
Old 02-03-2011, 10:32 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by texas97bmw View Post
I'm not really comfortable with testing the voltage as I'm not too familiar with such a thing. I will however try it.
I wouldn't bother with the allen wrenches.

If the diode and resistance tests fare well, you don't need to look any further.

Even on a phone, you should be able to go to the VERY best of E39 Links, can't you?

The thread you want is here.

Here are what my four wheel speed sensors tested at for diode voltage and resistance. What you're looking for is one sensor (rarely if ever more than one) which is out of whack from the rest. If they're all about the same, then they're just fine (this is the tribal knowledge here).



PS: I can't get ANYONE to post their readings of their four wheel speed sensors ... I'm not sure why that's such a problem ... but it would be good ... for comparison ... if you posted the readings of your four wheel speed sensors.
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  #15  
Old 02-03-2011, 10:38 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by texas97bmw View Post
Does not appear to be the same location or pin type... ?
You have to look further down in that thread as this issue had come up quite a few times in that loooong thread (here's a pic from post #307, for example).

We posted the wiring pinout for you to test. Let me know if that's not enough information in that thread.

In the end, you can do US a favor by annotating the picture below (or your similar one) with the numbers like I did for my connector.

That way, the next person stands on our shoulders.

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  #16  
Old 02-03-2011, 10:44 AM
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bluebee bluebee is offline
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I don't have the same setup as you do but others do so they should be able to help.

For example, I'm not sure if you test the wheel speed sensors from the glovebox connector or the engine bay connector in your model E39 (mine is all in the engine bay).

Here's a pic of the glovebox module from post 264 of the canonical thread we're referencing.

We really need someone with the older E39s to step up to the plate.

We tried here:
- Need ABS Module Pin Out for 1997 528i
But failed.

People solve the problem and then just move on. Some just don't give back.

It would be nice, if you, when you read what's in those threads, post a picture of the connector to test and label the 8 pins that need testing (two for each wheel speed sensor).

Thanks, in advance,
Good luck.
Bluebee

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  #17  
Old 02-03-2011, 10:52 AM
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bluebee bluebee is offline
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Here is a picture of the glovebox connector.

I gave a good description of all the places where the pinout is described already over here so I won't go into that again.

But, if you could, when you're done, can you annotate this picture below to show exactly which pins are the 8 that need to be tested?
abs_teves4eng.pdf (53.3 KB, 22 views)

TIA,
Bluebee

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  #18  
Old 02-07-2011, 09:26 AM
texas97bmw texas97bmw is offline
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Abs voluntarily shut off this afternoon. Everything works again. However the asc light is still illuminated.

Suggestions?
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  #19  
Old 02-07-2011, 09:49 AM
Garrison5 Garrison5 is offline
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Try pressing the ASC button below your temprature controls to see if it goes out. If not, drive it a few more miles to see if it goes out.

My son had this on his car for a few days because of ice and snow. Took it out for a 10 mile drive and it all went away.
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  #20  
Old 02-07-2011, 10:05 AM
texas97bmw texas97bmw is offline
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This light has been on since I got the car..

I have read in other posts to clean the ASC throttle body, but not sure of the location...
Others have said to check the ASC cable going into the throttle body... again.. not sure..

The light stays lit whether I press the button or not.

I have driven the car over a thousand miles and has never gone off.
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  #21  
Old 02-09-2011, 01:11 AM
texas97bmw texas97bmw is offline
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The abs light has come back on then went off for the entire day today. I ordered two new wheel speed sensors from Amazon.com for $55 shipped!
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