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Old 08-26-2008, 12:35 PM   #1
Honk_Few
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What is a "yaw" sensor?

I have a 2000 323iT and my DSC dash light is on -- and DSC is deactivated. It started going out intermittently and now has failed completely. There is no brake dash light on, however. I had it diagnosed at the dealer -- a speed sensor and something they called, according to their printout, the "yaw sensor which measures the pitch of the wheel when turning". I've searched around and I cannot find anything called a yaw sensor mentioned here, on Real OEM, or in Google -- other than a few instances in conjunction with the DSC system, mostly in product descriptions. I don't think it exists.

Does it sound like a steering angle sensor? The accelerating sensor? What the is the yaw sensor?
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Old 08-26-2008, 12:59 PM   #2
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It detects sideways movement of the rear end of the vehicle relative to the direction of travel.
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Old 08-26-2008, 01:12 PM   #3
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More precisely, according to BMW, the yaw rate used in the DSC system is an index of the vehicle's tendency to rotate around the vertical axis.
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Old 08-26-2008, 01:24 PM   #4
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Space flight/jet travel often use the terms "roll", "pitch", and "yaw" in the sense of position...The above posts are spot on.
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Old 08-26-2008, 01:31 PM   #5
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Thanks! Does anyone know where it's located? Could someone link it from Real OEM? I can't find it.
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Old 08-26-2008, 02:12 PM   #6
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Old 08-26-2008, 03:20 PM   #7
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I'm 90% sure is that its under the driver seat.

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Old 09-07-2008, 12:17 AM   #8
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Thanks! Does anyone know where it's located? Could someone link it from Real OEM? I can't find it.
There is a sensor with a lever attached to the passenger front lower control arm. If you take off the wheel you should be able to see it.
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Old 09-07-2008, 01:00 AM   #9
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There is a sensor with a lever attached to the passenger front lower control arm. If you take off the wheel you should be able to see it.
thats the auto level lever for the xenons.
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Old 09-07-2008, 02:33 AM   #10
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Here's a link to the DSC stuff in realoem:
http://www.realoem.com/bmw/showparts...65&hg=34&fg=20
I'm guessing you need #10 and #18, and I'm pretty sure it's under the driver's seat as Tim said.
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Old 09-07-2008, 09:26 AM   #11
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It notifies you when you're driving a plain, unmodded 4-door with 15" steelies. Oh, sorry, I thought you meant "yawn" sensor .
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Old 09-07-2008, 09:38 AM   #12
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Haha! I would have kicked her in the ovaries..Crazy ***** lol
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Old 09-07-2008, 09:45 AM   #13
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I don't know if this 'Ya' sensor is available on realoem.


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Old 09-07-2008, 11:00 PM   #14
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thats the auto level lever for the xenons.
Haha, you're right. That's what happens when you post in the wee hours of the night. Let me try to dig through my ETK...
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Old 09-10-2008, 06:15 PM   #15
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Here's all I could dig up -
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Old 09-10-2008, 10:30 PM   #16
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Here's all I could dig up -
Beat me to it. We got a winner. Very thorough and nice job.
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Old 09-10-2008, 10:35 PM   #17
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There you go now test the part and find out if it is bad, or just replace it and pray to whatever god you have...
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Old 09-10-2008, 11:24 PM   #18
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Here's all I could dig up -
Wow....

Thanks for sharing!

Bookmarked!!!
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Old 09-11-2008, 07:31 AM   #19
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Any and all info you could ever want about your car is available at www.bmwtis.com. It's $2500 a year or $30 a day. Then you have the same info BMW dealers and Indys have
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Old 09-11-2008, 09:20 AM   #20
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Here's all I could dig up -
Awesome! Thanks a ton.

I have a question about calibrating the sensor.

"If the rotation rate sensor is replaced, the new sensor must be calibrated with the DSC III control module through the Service Function Menu of the Diagnosis program using the DISplus or GT-1." (DSC part 1, pg. 15)

Is this something I can have done at the dealer before I install the new rotation rate sensor?
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