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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 06-07-2017, 08:28 AM
Tearitin Tearitin is offline
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Mein Auto: 2011 335i
DSC Malfunction and Brake Light

Wife hit a curb with the left front wheel. Now the DSC Malfunction warning comes up along with the brake light illuminating yellow. She claims to only have been going 10mph or so. Any ideas on how to fix this short of brining it to BMW and paying through the nose?
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  #2  
Old 06-07-2017, 08:35 AM
xwilkinx xwilkinx is offline
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Mein Auto: 2009 E92 328i
Check what codes its throwing. You could have a damaged strut, wheel speed sensor, and/or other steering components. Could also be a problem with active steering if you have it.

Remove the wheel(s) involved and take a look as well.
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  #3  
Old 06-07-2017, 08:40 AM
Tearitin Tearitin is offline
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Is there an easy way to read the codes? Since it is DSC doesn't it take a special scanner?
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Old 06-07-2017, 08:51 AM
xwilkinx xwilkinx is offline
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I have the BMWCarly app and adapter which works well for me. Any reader will work but BMW specific would be optimal. Should be able to read any DSC faults without issue.
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  #5  
Old 06-07-2017, 02:24 PM
gbalthrop gbalthrop is offline
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Location: Fairfax County, Virginia
 
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Mein Auto: 2007 328xi
Quote:
Originally Posted by Tearitin View Post
Wife hit a curb with the left front wheel. Now the DSC Malfunction warning comes up along with the brake light illuminating yellow...Any ideas on how to fix this short of brining it to BMW and paying through the nose?
Do you know if you have the TPMS (Tire Pressure Monitoring System) on your car? That is different from the FTM (Flat Tire Monitor) system. If the warnings you describe immediately followed the LF wheel contacting a curb, the likely cause is damage to the Wheel Sensor, inside the wheel, attached to the valve stem. Inspect the LF wheel carefully for physical evidence of scraping or chipping of the rim, or perhaps even damage to the valve stem or valve cap; then check the pressure in the LF tire.

On my older 2007 328xi, with TPMS, I also have "Check Control" codes (NOT the same thing as scanning codes by connecting a scanner to the OBDII port), and if you have such a system on your newer model you should do the following:

(1) Look in the Index of your Owner's Manual for "Check Control" and refer to the section in the Manual on that topic. If your Instrument Cluster or other display shows the "Check Control" icon ("!" in a triangle) you can retrieve the "CC-ID" or Check Control ID code, a code of up to 3 digits that correlates with certain faults. Just follow the procedure described in your Manual.

For instance, in your case, you might find CC-ID 50, 63, 139, 142, 147, etc.

Please let us know what you find,
George
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  #6  
Old 06-07-2017, 03:19 PM
Tearitin Tearitin is offline
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Thank you for the information. I followed what you recommended and the 2011 model did not give me a numerical code. Instead it put the Control Code on the screen which includes the following:
DSC Malfunction! Drive carefully
DBC Malfunction! Drive carefully
Start-Off Assistance inactive

These codes appeared within a minute of her hitting the curb. There is a little damage to the tire and the rim so you may be right. The car does have TPMS on it as well. I know I need to get the tire replaced so perhaps that is the best place to start.
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  #7  
Old 06-07-2017, 06:16 PM
xwilkinx xwilkinx is offline
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You need to scan the codes via the OBD port.
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  #8  
Old 06-07-2017, 08:50 PM
gbalthrop gbalthrop is offline
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Quote:
Originally Posted by Tearitin View Post
Control Code on the screen which includes the following:
DSC Malfunction! Drive carefully
DBC Malfunction! Drive carefully
Start-Off Assistance inactive

These codes appeared within a minute of her hitting the curb. There is a little damage to the tire and the rim so you may be right. The car does have TPMS on it as well.
On some vehicles, if NOT all E90's equipped with TPMS, a bad Wheel Sensor can lead to DSC (Dynamic Stability Control) shutdown, and/or DBC (Dynamic Brake Control) shutdown, because the system is designed to throw cautions when a tire is deflated (for safety reasons).

Do you have any Tire Icon on the screen that indicates low tire pressure?
Have you checked tire pressure on LF compared to RF?

A tire shop can tell you if the Wheel Sensor is transmitting or not (just senses the radio wave signal). You can replace the Sensor (on my 2007 DORMAN 974-079 TPMS Sensor, $42 -- from BMW ~ $80) by simply deflating the tire (remove the valve core), and use a board to break the tire bead seal to the rim on the outside of the rim at the valve stem (there are some YouTube videos online demonstrating that procedure. It's a fairly easy DIY procedure.

Getting the bead re-seated may be problematic if you don't have a compressor, so make sure you have a backup vehicle available in case you need to take it to a tire shop to get it re-inflated.

I installed the sensor described above on a new wheel that I got for a 5th wheel for tire rotation, and to have a spare to limp home to in the event of a flat -- easy job. There is ONE small screw that holds the sensor to the valve stem. If the valve stem is intact, nothing else to disconnect/remove but the one screw.

George
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  #9  
Old 06-16-2017, 07:21 AM
Tearitin Tearitin is offline
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Location: Dallas
 
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Mein Auto: 2011 335i
I wanted to update everyone since folks have been very helpful. I bought an ebay OBD scanner (Foxwell - it is pretty awesome) and it came back with a Steering Angle Sensor warning which is what was causing the DSC errors. I had the car aligned and initialized the Sensor by cranking the steering wheel all the way in one direction and then the other. Light went off and I am on my way. Thank you to everyone for all the help.
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  #10  
Old 06-16-2017, 11:37 AM
ZGator ZGator is offline
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I had the DSC light and Brake, and 4x4 warning lights come on, after driving over a rough unpaved patch in which perhaps a wheel may have come off the ground - I also found that after much reading of codes and posts that re calibration of steering angle sensor by moving steering wheel to both left and right limits immediately fixed the issue..
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  #11  
Old 06-19-2017, 12:01 PM
unknownboy unknownboy is offline
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Location: United Kingdom
 
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Mein Auto: E90 325i
If one of the speed sensors are generating DSC and ABS errors, after replacing it with a new one, do you need to reset all errors or would they will disappear by themselves?
I know it might sound daft....
Thanks
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