ABS Light and CEL.

Derek8819 · 07-18-2012, 03:29 PM

I noticed the other day while autocrossing that the MDM button was casuing the ESC and MDM lights to activate, I thought this was cool, but I knew something was not right. On the way home I threw a CEL and an ABS light. I pulled the codes and 2FE4 is showing up, which is an undefined code on my programmer. I brought it to the dealer this morning and they diagosed it as a bad drivers side rear wheel bearing. Does this sound right to you guys? I am not hearing any noises or such, but I guess it could just be the sensor on that bearing. Opinions?

Derek8819 · 07-19-2012, 10:30 AM

Anyone?

Dackelone · 07-19-2012, 11:14 AM

IF a wheel bearing is bad (ie: loose) it will allow the tooth ABS ring on the wheel hub to flex. This in turn will have your ABS speed sensor for that wheel to not have a wheel speed signel from time to time. Because the sprocket ring wheel with be coming in and out of what that the speed sensor can "see/read". That will cause a fault to be stored.

When I read your subject line I thought to myself maybe it was your SZL (steering wheel) sensor starting to go bad.

BMW steering wheel sensor re-setting…
http://www.1addicts.com/forums/showthread.php?t=504482

Let us know when its fixed and what fixed it!

Dack

Derek8819 · 07-19-2012, 12:51 PM

I'll give it a shot, I was showing a (!) symbol with the ABS lights. Any ideas what would make the sensor lose calibration? Is it related to the CEL code I posted above?

Dackelone · 07-19-2012, 12:58 PM

Quote:

Originally Posted by Derek8819

I'll give it a shot, I was showing a (!) symbol with the ABS lights. Any ideas what would make the sensor lose calibration? Is it related to the CEL code I posted above?

I thought your car is at the dealership being repaired? Just let them fix it.

I was not saying your SZL sensor is bad. I said that was went thru my mind at first, when I read your post.

Dack

Derek8819 · 07-19-2012, 01:27 PM

I brought it in yesterday, they did not have the parts, nor could they explain the reason behind coming up with having to order a wheel bearing. I just am skeptical with a dealer as usual, I feel they usually break more than they fix.

07-18-2012, 03:29 PM	#1
Derek8819 First Lieutenant 35 Rep 358 Posts Drives: 2015 F80 M3 Join Date: Nov 2011 Location: New Orleans, LA iTrader: (4)	ABS Light and CEL. I noticed the other day while autocrossing that the MDM button was casuing the ESC and MDM lights to activate, I thought this was cool, but I knew something was not right. On the way home I threw a CEL and an ABS light. I pulled the codes and 2FE4 is showing up, which is an undefined code on my programmer. I brought it to the dealer this morning and they diagosed it as a bad drivers side rear wheel bearing. Does this sound right to you guys? I am not hearing any noises or such, but I guess it could just be the sensor on that bearing. Opinions? Last edited by Derek8819; 07-18-2012 at 09:17 PM..
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07-19-2012, 10:30 AM	#2
Derek8819 First Lieutenant 35 Rep 358 Posts Drives: 2015 F80 M3 Join Date: Nov 2011 Location: New Orleans, LA iTrader: (4)	Anyone?
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07-19-2012, 11:14 AM	#3
Dackelone European Editor 10757 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	IF a wheel bearing is bad (ie: loose) it will allow the tooth ABS ring on the wheel hub to flex. This in turn will have your ABS speed sensor for that wheel to not have a wheel speed signel from time to time. Because the sprocket ring wheel with be coming in and out of what that the speed sensor can "see/read". That will cause a fault to be stored. When I read your subject line I thought to myself maybe it was your SZL (steering wheel) sensor starting to go bad. BMW steering wheel sensor re-setting… http://www.1addicts.com/forums/showthread.php?t=504482 Let us know when its fixed and what fixed it! Dack __________________ Dackel's European Delivery Museum Guide
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07-19-2012, 12:51 PM	#4
Derek8819 First Lieutenant 35 Rep 358 Posts Drives: 2015 F80 M3 Join Date: Nov 2011 Location: New Orleans, LA iTrader: (4)	I'll give it a shot, I was showing a (!) symbol with the ABS lights. Any ideas what would make the sensor lose calibration? Is it related to the CEL code I posted above?
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07-19-2012, 01:27 PM	#6
Derek8819 First Lieutenant 35 Rep 358 Posts Drives: 2015 F80 M3 Join Date: Nov 2011 Location: New Orleans, LA iTrader: (4)	I brought it in yesterday, they did not have the parts, nor could they explain the reason behind coming up with having to order a wheel bearing. I just am skeptical with a dealer as usual, I feel they usually break more than they fix.
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