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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-14-2011, 12:25 AM   #21
TrickTizzle
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Quote:
Originally Posted by penet05 View Post
As TrickTizzle said, I reset the codes with the ignition on and then read the codes seconds later, only the rear left wheel speed sensor error pops-up with the frequency of 0. Then I drove the car for half of a mile while live-tracking the speed sensors, the left rear sensor was intermittently showing data. After I stop, I checked the error codes one more time, and it was again that same sensor. Therefore, I ordered a rear wheel speed sensor, hoping that it will solve the problem. Also, tomorrow I'll drive a little bit more to see if other codes pops-up.

Since my speedo works half of the time, I don't think it is related with fuses. However, I will keep watching for the front left sensor and steering angle sensor error codes.
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Old 03-14-2011, 12:26 PM   #22
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Originally Posted by Pir4t View Post
As i've said before :
ABS/xSC/BRAKE lights coming on while driving are in 95% of the cases WSS , unless they've been replaced earlier then you should replace them.
100% incorrect
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Old 03-14-2011, 12:37 PM   #23
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100% incorrect
How so,I work at a bmw dealership and i talk from personal experience.
Seeing as you're a fellow tech...
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Old 03-14-2011, 12:46 PM   #24
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How so,I work at a bmw dealership and i talk from personal experience.
Seeing as you're a fellow tech...
Then you obviously don't scan very many cars with abs lights on. From being a tech now to working in bmw parts, we rarely do wheel speed sensors. I don't know why everyone on this site thinks that is the only thing that can go wrong when the abs and brake lights are on. We probably do more abs modules than we do speed sensors.

I've been working on e46's and bmws since 2006 when I first got a job at a euro shop...so this is speaking from experience.
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Old 03-14-2011, 01:47 PM   #25
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Originally Posted by 330ciandr6 View Post
Then you obviously don't scan very many cars with abs lights on. From being a tech now to working in bmw parts, we rarely do wheel speed sensors. I don't know why everyone on this site thinks that is the only thing that can go wrong when the abs and brake lights are on. We probably do more abs modules than we do speed sensors.

I've been working on e46's and bmws since 2006 when I first got a job at a euro shop...so this is speaking from experience.
Guess the climate does something to the WSS'es then , water always finds a way into the sensor up here in sweden and the sensor then goes bad.
Or salt/dirt gets onto the impulse wheel.
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Old 03-21-2011, 05:35 PM   #26
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I am in shop today for the wheel speed sensor? The original sensor is jammed because of the rust. It's been more than an hour they are trying to remove it. Fingers are crossed.

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Old 03-21-2011, 06:00 PM   #27
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Off topic: yesterday I drove my car on the lift (testing) and the Brake, DSC and ABS lights came on. And when I drove it on the road, all the lights went off after 1 min.
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Old 03-21-2011, 06:07 PM   #28
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That would be because while on the lift only the rear wheels spin, and the car sees the speed is different between the front and rear wheels.
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Old 03-21-2011, 06:51 PM   #29
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That would be because while on the lift only the rear wheels spin, and the car sees the speed is different between the front and rear wheels.
Probably.
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Old 03-21-2011, 06:52 PM   #30
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No, not probably. For sure.
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Old 03-21-2011, 11:55 PM   #31
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No, not probably. For sure.
Okay sir, thanks.!!
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Old 03-21-2011, 11:57 PM   #32
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When my traction lights turn on... I say "thank God!!"
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Old 03-23-2011, 01:25 AM   #33
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Result: New left rear ABS Speed sensor fixed the problem.
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Old 07-12-2011, 04:26 AM   #34
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Wow how many times are you people going to tell them the wheel speed sensor fixes it. There are so many things that can cause the abs and Dsc lights to go on. get the codes read before you put random parts on your car.


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Really? Its strange how for my car (and others on here) taking the sensors out and cleaning the metal filings off of them fixed this exact problem. My lights have not came back on in over six months now. But by all means go to a dealer and spend $100 getting the codes checked first instead of trying something at home that costs an hour of your time. LoL
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Old 07-12-2011, 09:20 AM   #35
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Really? Its strange how for my car (and others on here) taking the sensors out and cleaning the metal filings off of them fixed this exact problem. My lights have not came back on in over six months now. But by all means go to a dealer and spend $100 getting the codes checked first instead of trying something at home that costs an hour of your time. LoL
here you go broski:

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Originally Posted by mkodama View Post
cleaning a wheel speed sensor won't affect it in the slightest since it is likely a Hall or VR sensor, which are immune to dirt, grease, rocks, plastic, etc... The only thing that could throw it off is if a magnet was attached to it.
truth.
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Old 07-12-2011, 12:17 PM   #36
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yea cleaning them cleared it for me its been over 3 months now no more warning lights. It so easy to fix and practically free, so no reason not to try cleaning them first. Then if that doesn't do it, get the codes read and go from there. Free trumps pay every time, except when the person involved does not want to put forth the effort and prefers convenience. Convenience can get expensive real quick, though.
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Old 07-12-2011, 12:23 PM   #37
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Also it is prob true that most things except a magnet do not affect the sensor. The sensor itself is a pulse generator and so i imagine magnetized filings from the brakes could easily throw it off once enough was accumulated. And the grease and mud might not affect it but it definitely helps those magnetized filings stick to it.
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Old 07-12-2011, 01:06 PM   #38
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here you go broski:



truth.
Well ok. Go with what feels right in YOUR head.
I am perfectly ok with ONLY cleaning them and all three dash lights NOT being on anymore.
BTW do you "take it to a shop first" guys work for a BMW dealer?
These forums I think are for people who want to fix their cars on their own but with a lil help from others.
But hey, call the dealer. I garantee he will also insist you bring the car in EVERY time.
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Old 07-12-2011, 01:13 PM   #39
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Also it is prob true that most things except a magnet do not affect the sensor. The sensor itself is a pulse generator and so i imagine magnetized filings from the brakes could easily throw it off once enough was accumulated. And the grease and mud might not affect it but it definitely helps those magnetized filings stick to it.
Mine had those metal filings on it. Cleaning them worked great for me.
I'll try a possible fix (thats free) first over taking it to the shop any day.

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Old 07-12-2011, 08:32 PM   #40
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Well ok. Go with what feels right in YOUR head.
I am perfectly ok with ONLY cleaning them and all three dash lights NOT being on anymore.
BTW do you "take it to a shop first" guys work for a BMW dealer?
These forums I think are for people who want to fix their cars on their own but with a lil help from others.
But hey, call the dealer. I garantee he will also insist you bring the car in EVERY time.
You sir are an idiot. If you read the thread in my sig do I say anything about taking it to the dealer? I say get the car scanned and diagnose it properly so you aren't wasting time and throwing parts at it. Do you have any idea how many different codes/parts can go wrong with the abs/dsc system? Obviously not. Sorry I've only been working in the auto industry as a tech/advisor/parts for 9 years, 6 of which are BMW so maybe I don't have your level of knowledge. I have helped people on this forum damn near more than anyone else on here and most people will vouch for that so you might want to do your research before you type.
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