Brake Light + DSC + Flat Tire Indicator = All Yellow, HELP!?

Crystallized · 03-08-2008, 03:44 PM

So I had all three lights come on at the same time while I was driving. This has been an ongoing issue for a few months and it seems to go away after awhile. If I shut off the car and restart it, the lights go off again and everything is normal.

It doesn't change my driving at all, however the book says if the BRAKE + DSC lights up yellow and stays on, then I have a DSC system malfunction and I need to bring it into BMW.

The Flat Tire Indicator also comes on when this happens. Nowhere in the book does it tell me what it means when all 3 come on. It just tells me what it means if the BRAKE + DSC comes on and then it tells me what it means if the flat tire indicator light comes on and stays yellow (which means there's a malfunction with that system too).

I brought the car to BMW and they were unable to find what the problem was, and were unable to replicate the problem.

I'm thinking it's a loose wire somewhere, however if it is loose and stays on, but when I turn off the car and back on, it goes away....it doesn't make sense.

Anyone have similar experiences? And what did you do to fix it? Maybe some one here can tell me where those wires are, so I can see if they are loose/exposed?

Pontio · 03-09-2008, 07:31 AM

it sounds like you could possibly have a binding caliper. or maybe a wheel speed sensor is breaking down.

narcolo · 03-10-2008, 04:45 PM

have them check the steering angle sensor. I just had mine fixed, same symptoms. Hope you are under warranty!

Crystallized · 03-13-2008, 04:05 PM

Quote:

Originally Posted by narcolo

have them check the steering angle sensor. I just had mine fixed, same symptoms. Hope you are under warranty!

Funny you should mention steering. I had my entire steering column replaced because my power steering went out (thank god for extended warranties). You're probably right about the steering angle sensor, though I would like to know...what does this sensor do (besides monitor the steering angle? lol)

vachss · 03-13-2008, 04:23 PM

The steering angle sensor is one of the inputs for the DSC system. From the steering wheel angle and the wheel speeds it can figure out how fast you should be turning. If the numbers don't add up you must be sliding - and the DSC does its thing.

CalZ4M · 03-13-2008, 04:27 PM

Quote:

Originally Posted by vachss

The steering angle sensor is one of the inputs for the DSC system. From the steering wheel angle and the wheel speeds it can figure out how fast you should be turning. If the numbers don't add up you must be sliding - and the DSC does its thing.

What he said....the steering angle sensor is an integral part of the DSC.

RCNet · 08-01-2008, 12:29 AM

Time to dredge up an old thread. Tonight I was plagued by the same issue in my '06 Z4MC with the ABS, BRAKE, TPS, and DSC indicators all on. I've got the bonus "feature" of my speedometer reading zero all the time. I brought up the NAV sensors diagnostic screen and the wheel sensor reading remains 0 while I drive around. I'm guessing I'm in need of a new wheel sensor myself.

Oh, one more thing I noticed. If I get the RPMs too high, the car drops into "limp home" mode.

Bob D · 08-01-2008, 07:39 AM

Just had the same thing on our 06 Z4 it was the wheel senser just had the rear tires replaced. took it to the dealer fixed no problem

03-08-2008, 03:44 PM	#1
Crystallized New Member 5 Rep 13 Posts Drives: 2003 BMW Z4 3.0i Join Date: Oct 2007 Location: Hacienda Heights, CA (20 minutes east of Los Angeles) iTrader: (0)	Brake Light + DSC + Flat Tire Indicator = All Yellow, HELP!? So I had all three lights come on at the same time while I was driving. This has been an ongoing issue for a few months and it seems to go away after awhile. If I shut off the car and restart it, the lights go off again and everything is normal. It doesn't change my driving at all, however the book says if the BRAKE + DSC lights up yellow and stays on, then I have a DSC system malfunction and I need to bring it into BMW. The Flat Tire Indicator also comes on when this happens. Nowhere in the book does it tell me what it means when all 3 come on. It just tells me what it means if the BRAKE + DSC comes on and then it tells me what it means if the flat tire indicator light comes on and stays yellow (which means there's a malfunction with that system too). I brought the car to BMW and they were unable to find what the problem was, and were unable to replicate the problem. I'm thinking it's a loose wire somewhere, however if it is loose and stays on, but when I turn off the car and back on, it goes away....it doesn't make sense. Anyone have similar experiences? And what did you do to fix it? Maybe some one here can tell me where those wires are, so I can see if they are loose/exposed?
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03-09-2008, 07:31 AM	#2
Pontio Enlisted Member 2 Rep 32 Posts Drives: Z4 Coupe Join Date: Oct 2007 Location: UK iTrader: (0)	it sounds like you could possibly have a binding caliper. or maybe a wheel speed sensor is breaking down.
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03-10-2008, 04:45 PM	#3
narcolo New Member 4 Rep 26 Posts Drives: E85 E89 Z4 Join Date: Nov 2007 Location: OC iTrader: (0)	have them check the steering angle sensor. I just had mine fixed, same symptoms. Hope you are under warranty!
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03-13-2008, 04:23 PM	#5
vachss Captain 55 Rep 815 Posts Drives: Z4 Coupe Join Date: Jan 2008 Location: Ventura County, CA iTrader: (1)	The steering angle sensor is one of the inputs for the DSC system. From the steering wheel angle and the wheel speeds it can figure out how fast you should be turning. If the numbers don't add up you must be sliding - and the DSC does its thing.
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08-01-2008, 12:29 AM	#7
RCNet Woof!! 5 Rep 111 Posts Drives: 2006 Ti Silver Z4 M Coupe Join Date: Apr 2007 Location: SW Washington iTrader: (0)	Time to dredge up an old thread. Tonight I was plagued by the same issue in my '06 Z4MC with the ABS, BRAKE, TPS, and DSC indicators all on. I've got the bonus "feature" of my speedometer reading zero all the time. I brought up the NAV sensors diagnostic screen and the wheel sensor reading remains 0 while I drive around. I'm guessing I'm in need of a new wheel sensor myself. Oh, one more thing I noticed. If I get the RPMs too high, the car drops into "limp home" mode. __________________ 2006 Ti Silver Z4 M Coupe 2009 Deep Sea Blue 535i xDrive Sports Wagon
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08-01-2008, 07:39 AM	#8
Bob D Private 1 Rep 73 Posts Drives: 2006 Z 4 Join Date: May 2007 Location: Columbia SC iTrader: (0) Garage List 2006 Z4 roadster 3.0i [7.00] 2006 325I [0.00]	Just had the same thing on our 06 Z4 it was the wheel senser just had the rear tires replaced. took it to the dealer fixed no problem __________________
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