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Old 06-25-2020, 05:38 PM
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Tragically

Hi guys hope you are all keeping well, as above, went to VW dealer for some parts and after starting up the 3 lights were on and have been for 2 days now. Maybe it was pissed off that I was at VW.
Anyway drives perfect, no gear changing problems, put the Foxwell on it and got DSC57 High pressure switching valve Rear Axle: Connected INPA got fault 87 Precharge valve rear axle Left. Looked at live data and all wheel sensors are good. Fault doesnít clear with either reader. Does this suggest that the DSC Module needs repair/replaced. Cheers in advance


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  #2  
Old 06-25-2020, 05:40 PM
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Originally Posted by Henrym3 View Post
Hi guys hope you are all keeping well, as above, went to VW dealer for some parts and after starting up the 3 lights were on and have been for 2 days now. Maybe it was pissed off that I was at VW.
Anyway drives perfect, no gear changing problems, put the Foxwell on it and got DSC57 High pressure switching valve Rear Axle: Connected INPA got fault 87 Precharge valve rear axle Left. Looked at live data and all wheel sensors are good. Fault doesnít clear with either reader. Does this suggest that the DSC Module needs repair/replaced. Cheers in advance


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I donít know where the TRAGICALLY came from should be TRAFICA


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Old 06-25-2020, 06:12 PM
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Most likely the DSC module might need rebuilding.

Also, it's good you checked your wheel speeds reporting on all 4 wheels. You also need to check you SAS to ensure logical values are being reported.

There are also some other routines you can check the functionality of the DSC. You can check the pump by running one of the routines. Sometimes that motor seizes up and you have to get a whole new DSC hydraulic block since it's not really "serviceable" to rebuild.
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Old 06-26-2020, 06:40 AM
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Cheers for the reply, checked the SAS this morning and it seems ok. Not sure how other than moving the steering wheel and seeing the readings vary and come back to 0 in the straight ahead position. DSC, donít know how to activate so some reading me thinks.


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Old 06-26-2020, 08:12 PM
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Originally Posted by Henrym3 View Post
Cheers for the reply, checked the SAS this morning and it seems ok. Not sure how other than moving the steering wheel and seeing the readings vary and come back to 0 in the straight ahead position. DSC, donít know how to activate so some reading me thinks.


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Yes, correct! I usually jack up the front axle and turn the steering wheel left to right [when checking SAS functionality]. (you dont need the engine on to do this since the front axle is unladen)

In terms of the DSC, look at all of your wheel speed and manually spin the wheels to see if they report logical data. Obviously if you turn one wheel, the corresponding wheel will turn at the same rate (granted you are in park and wheels are suspended).
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Old 06-27-2020, 12:21 AM
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Originally Posted by Henrym3 View Post
Cheers for the reply, checked the SAS this morning and it seems ok. Not sure how other than moving the steering wheel and seeing the readings vary and come back to 0 in the straight ahead position. DSC, donít know how to activate so some reading me thinks.


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Check the yaw sensor
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Old 06-27-2020, 06:22 PM
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Check the yaw sensor


So, update, went out this morning, itís raining so quite cold and no lights. Went for a drive and after about 3 miles they come back on. Checked OBC temperature at 82c. Pulled into parking area and faults wouldnít clear. A few hours later at home I was able to clear the codes also checked the pump worked. Yaw gave readings on the way home. So have decided to go with a module repair. My wife who knows absolutely nothing about cars. Said, isnít that the same thing you had repaired before we moved to our present house. Doh, is that an indication Iíve fixed so much I canít remember it all. Found the receipt and itís a lifetime warranty. Bonus. Iíll call them Monday. Hopefully they wonít try to wriggle out.
Thanks for all the input, Iíll update when I have more information.


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Old 06-29-2020, 01:55 PM
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Originally Posted by Henrym3 View Post
So, update, went out this morning, itís raining so quite cold and no lights. Went for a drive and after about 3 miles they come back on. Checked OBC temperature at 82c. Pulled into parking area and faults wouldnít clear. A few hours later at home I was able to clear the codes also checked the pump worked. Yaw gave readings on the way home. So have decided to go with a module repair. My wife who knows absolutely nothing about cars. Said, isnít that the same thing you had repaired before we moved to our present house. Doh, is that an indication Iíve fixed so much I canít remember it all. Found the receipt and itís a lifetime warranty. Bonus. Iíll call them Monday. Hopefully they wonít try to wriggle out.
Thanks for all the input, Iíll update when I have more information.


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Okay so that seems like good news! I'll anticipate your update.
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