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Old 11-04-2012, 04:23 PM
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Default Diagnosing Cause of DSC, Red BRAKE & ABS lights

Ever since I bought my car (2002 325i), the DSC, Red BRAKE, and ABS lights have been on. I wasn't concerned when I made the purchased because I bought it from the original owner, also a long-time personal friend. He was not sure why the lights were on, but I have been trying to fix it ever since.

Here is what I know. The lights sometimes go off and stay off for a couple of say, for no particular reason. Most of the time, they are on when I start the car or come on very quickly thereafter along with a single beep.

I first had the system read by a local (non dealer) shop and was told the steering angle sensor was throwing a code. I read up on replacing the sensor and discovered I would have to re-code it regardless. Some have had success just re-coding to eliminate the lights.

I have been working on using INPA, Carsoft, NCS, DIS, etc. for days on end. This is what I know so far:

1. I ran Carsoft this morning and got the following info:



2. When I run INPA 3.01 (supposedly the only version to re-code steering angle sensors, I get the following error when trying to calibrate the sensor under special tests:

"error in communications DSC
No conneciton possible
Program will be terminated"

The software otherwise recognized the car.

I have read that I may be able to re-code/reprogram the module. I am really lost beyond this at the moment and could use some help from a veteran/pro. Thanks!


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Old 11-09-2012, 11:54 PM
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Bump.
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Old 12-01-2012, 05:56 AM
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It is most like your steering angle sensor and yes you have to code it for it to work. if you don't have the means to code it or want to pay for a dealer to code it then get a used one that is already coded and see if it will work. You might have to have it calibrated though. A junkyard one would be a good idea.
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Old 12-01-2012, 04:41 PM
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You must code ABS control unit , then code stering angle sensor , and on and You must calibrate stering angle . Pleasse see all conectors for louse of contact beffore start with work . have a nice work.
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Old 12-02-2012, 02:59 PM
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The internal fault usually means its the actual control module that is faulty. I had a similar error on a friends MRS4 airbag module. Replace & code the module & I think you'll be sorted. In my case I had checked as many sources as possible & the consensus was that the module could be repaired by replacing the EEPROM & re-flashing it. However this requires access to a programmer for EEPROMs & some additional know how. There are plenty of specialists out there that can repair your module but the price of a second hand replacement module was cheaper than getting your old one repaired.
With the DSC module I think you also have to re-calibrate the steering angle sensor. There is a straight forward procedure for this in DIS.
Best of luck.
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