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midlandtech
05-06-2012, 07:46 AM
So while driving at a constant speed on the highway all the sudden these lights came on... Any ideas? 3912


~Steve
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danewilson77
05-06-2012, 08:04 AM
Wheel speed sensor. Doagnostics will help pin point the problem though.

Could be something else within the ABS system as well.

How were road conditions?

How long since last alignment? How old are tires?

midlandtech
05-06-2012, 08:15 AM
Was raining tires are about 50% and I was traveling at a constant speed (no cruise)... About 80 mph dsc is not functioning nor is abs


~Steve
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danewilson77
05-06-2012, 08:19 AM
Mmph....

Preemptively.....you could remove and clean your wheel speed sensors. Pretty easy. Free to try.

midlandtech
05-06-2012, 08:28 AM
I may give that a shot... Where are they located?


~Steve
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danewilson77
05-06-2012, 08:33 AM
I may give that a shot... Where are they located?


~Steve
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You will see em, plugged into back side wheel hub carrier. One hex head I believe secures them in place.

Sent from SIGFest 2012

midlandtech
05-06-2012, 08:37 AM
Ok as soon as this t-storm passes I may have to give that a shot. Thank you Dane.


~Steve
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danewilson77
05-06-2012, 08:59 AM
OK...look at this while the storm is passing...

http://www.bmwfanatics.co.za/showthread.php?tid=17759


http://www.youtube.com/watch?v=_COHJNhkyzI

midlandtech
05-06-2012, 10:32 AM
great write up the conditions that the guys car was under were nearly identical to mine so hopefully that is what the problem is. I wonder if its worth it to just replace them all and have peace of mind that they shouldn't go out for another 90K miles.

danewilson77
05-06-2012, 10:45 AM
Oooo...I think they are a bit of $$$.

REAR - MANUAL

http://www.ecstuning.com/Search/34526752683/ES63105/

REAR - AUTO

http://www.ecstuning.com/Search/34526752702/ES63109/

FRONT - LEFT - ON SALE!

http://www.ecstuning.com/Search/34526792897/

FRONT - RIGHT

http://www.ecstuning.com/Search/34526792896/ES2159289/

http://i1015.photobucket.com/albums/af278/nicee46/Maintenance%20and%20Misc/47374_x600.jpg

midlandtech
05-06-2012, 11:08 AM
o.O jebus perhaps I should just replace the offender.... I have been lusting for a Sprint Booster and this would put the brakes on that for sure

Hornung418
05-06-2012, 11:14 AM
Could be a host of issues. I would hold off buying the wheel speed sensors until you can have it properly diagnosed. Cleaning them may clear up the issue and is where you should begin.

danewilson77
05-06-2012, 11:15 AM
+1^

midlandtech
05-06-2012, 12:10 PM
I hope to get the codes read tomorrow... Until then I am pulling the sensors and cleaning them... I really hope they are what's causing the lights


~Steve
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danewilson77
05-06-2012, 12:18 PM
I went down the path you're going and my issue was not the sensors. It was the alignment.

http://www.zhpmafia.com/forums/showthread.php?3873-BMW-330i-ZHP-Steering-Wheel-Angle-Sensor-Information-and-Discussion&highlight=steering

midlandtech
05-06-2012, 12:19 PM
Dane was this before or after your suspension mods?


~Steve
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midlandtech
05-06-2012, 12:22 PM
NM


~Steve
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danewilson77
05-06-2012, 01:25 PM
Dane was this before or after your suspension mods?


~Steve
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NM


~Steve
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LOL

midlandtech
05-06-2012, 03:16 PM
took the wheels off and scrubbed the sensors down with some concentrated super clean. also scrubbed where they mount too and after driving the car around (before the 3rd T-storm of the day hits) the lights all shut off. I'm taking it up to the dealer ship tomorrow to have my buddy read the faults on it just to make sure its not something else. Thanks again for the help I really appreciate it.

danewilson77
05-06-2012, 03:18 PM
Great news.

Sent from SIGFest 2012

midlandtech
05-06-2012, 03:28 PM
cut it close on the test drive... we just got home and the tornado sirens started going of... got the car put in the garage out of the reach of hail and now its time to duck and cover

ranger
05-06-2012, 04:11 PM
My car had same lights pop on Friday driving home on the interstate. I stopped, turned off car, and restarted. Lights were off and have not come back. Fingers crossed!

terraphantm
05-06-2012, 09:38 PM
two most common causes seem to be the wheel speed sensors and the steering angle sensor.

midlandtech
05-07-2012, 10:54 AM
Just had the codes read and it was the right rear wheel speed sensor... Hopefully the cleaning will correct the issue and the lights will not come back


~Steve
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Hornung418
05-07-2012, 10:55 AM
Good work!

webster
05-07-2012, 12:18 PM
great work team!

midlandtech
05-07-2012, 07:03 PM
great work team!

chalk one up for the good guys :kumbaya

midlandtech
05-12-2012, 07:17 AM
Well the lights came back on while driving on the highway in identical conditions... Aside from replacing the sensor my friend suggested cleaning the speed sensor impulse wheel.... Anyone have an idea where the hell that is?


~Steve
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Johnmadd
05-12-2012, 07:37 AM
Found this info for you Steve.

Absolutely the first thing to try is removing and cleaning the sensor. The sensor are essentially magnets that pick up all sort of metal particles over the years. Also, the pulse generator on the wheel hub can collect debris. So, shine a flashlight in the hole while turn the wheel and look for blobs or grease or other debris and if found romove it.

If the sensor cannot get a good reference reading when the car is started, then it throws a fault. Debris can be the cause.

midlandtech
05-12-2012, 10:43 AM
Found this info for you Steve.

Absolutely the first thing to try is removing and cleaning the sensor. The sensor are essentially magnets that pick up all sort of metal particles over the years. Also, the pulse generator on the wheel hub can collect debris. So, shine a flashlight in the hole while turn the wheel and look for blobs or grease or other debris and if found romove it.

If the sensor cannot get a good reference reading when the car is started, then it throws a fault. Debris can be the cause.

Great info thank you I will break out the flash light and brush


~Steve
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