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Discussion Starter #1
I've some time searching through all the "trifecta' and DSC light postings and couldn't find an answer to my question so I apologize in advance if the answer is out there and I was unable to locate.

HISTORY: Experienced the trifecta warning lights. Shipped my ABS module to AUTOECU for a rebuild.

RESULT: Installed the rebuilt module. I started up the car and all 3 lights did not appear. I drove the car for 30 seconds and then the DSC light turned on. After a few observational cycles, the following behavior occurs 100% of the time.

1) car starts and all 3 lights are off.
2) you can idle for 5 minutes and all the 3 lights stay off
3) you can drive slowly for a long time (maybe forever) and the 3 lights stay off
4) as soon as the speed exceeds ~22mph, only the DSC light turns on and it stays on until the car is turned off.
5) you can turn the car off...wait maybe 5 minutes so the engine is still hot, and the DSC light coming on at 22mph pattern starts all over.
6) except at startup, neither the ABS or brake light have ever turned on since I reinstalled the rebuilt ABS module

* I've ordered a bmw specific ODB2 code reader but it's not arrived yet.

Main Question: Does DSC light coming on at 22mph, provide any troubleshooting indicators of what is wrong?
 

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Under the lift arms
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ok... so you sent a module out to be rebuilt, B4 you scanned it?

yes coming on at 22mph indicates you have A DSC fault....

report back with the codes
 

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Under the lift arms
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I guess now would be a good time to talk about what scanner you bought?


*what scanner did you buy?
 

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Discussion Starter #7
I understand your point about not scanning before having the ABS module rebuilt but before the rebuild, all three lights turned on-off, while after the rebuild, only the DSC light turned on-off.

I'd not followed up to order the ODB2 reader yet but had been looking at the Foxwell NT510 and the Carly. Which model (s) do you reccomend?
 

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In an effort to to see if my speed sensor was bad or my module was bad I put a sensor from a 525 on my 540. All lights went off. At around 20mph my asc light came on and the car tried to stop itself. Right and left wheel speed sensors read short or out of parameter, something like that. Put new oem sensors in and I have ABS and traction control!!

Sent from my LM-V350 using Bimmerfest mobile app
 

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Under the lift arms
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you wont be sorry....

here register now.. http://www.foxwelltech.com/

youll need you serial number off the back of the unit to finalize and all that but you can defiantly start with registering and getting together with them..

It really burns my butthole to say that i paid snap on 2,500$ for a micro scanner (back in the day) that now sells on ebay for about 75$

very impressed with foxwell and Autel
 

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you wont be sorry....

here register now.. http://www.foxwelltech.com/

youll need you serial number off the back of the unit to finalize and all that but you can defiantly start with registering and getting together with them..

It really burns my butthole to say that i paid snap on 2,500$ for a micro scanner (back in the day) that now sells on ebay for about 75$

very impressed with foxwell and Autel
https://www.fcpeuro.com/products/autolink-al329-obdii-scanner-autel-al329#desc

https://www.ecstuning.com/b-schwaben-by-foxwell-parts/obdii-and-eobd-code-reader/019599sch01a~scf/
 

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Discussion Starter #13
the schwaben from ESC looks exactly like the NT510 and is $102 vs $149. Anybody know if the capabilities are the different or the same? I'm pretty sure I can get the nt510 updated to support our 2017 MDX.
 
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