ABS Dsc fault above 25km/hr

[haydar alameen]

Hello every body, I have in my e38 740 1998 ABS DSC lights on , first time when gets rain and speedo not working , The left rear sensor has bad wire I replaced the wire and reconnected it , the speedo works , but the abs dsc light comes on when the speed above 25 km /hr
I use inpa the sensor not mentioned in error ( chassis > dsc sector )
Any one can help me please


Sent from my iPhone using Tapatalk

[Timm]

That could be pre-charge pump failure - but could also be another wheel sensor failing - you need diagnostics to determine which it is - pre-charge pump covered in the second section of this:

https://www.meeknet.co.uk/E38/ABS/Index.htm

[TheAngryBear]

What is the error you are getting from inpa?


2001 750iL DD74441
Stock

RIP: 2003 540iA Sport GS56111
H&R front springs, Ultimate Cup Holder, Euro Dash & Armrest, Grom, BavSound Stage1

[haydar alameen]

That could be pre-charge pump failure - but could also be another wheel sensor failing - you need diagnostics to determine which it is - pre-charge pump covered in the second section of this:

https://www.meeknet.co.uk/E38/ABS/Index.htm

I tried inpa but no any error about sensors even when the rear left is failed , only I have steering angle sensor pulsating


Sent from my iPhone using Tapatalk

[Timm]

I have steering angle sensor pulsating

That will do it! Hopefully you just need to re-calibrate it which can be done via diagnostics.....

[haydar alameen]

That will do it! Hopefully you just need to re-calibrate it which can be done via diagnostics.....

It occurs due to failure of the front rod , I fixed it today and the angle is zero when the steering wheel in its standard position, I previously had this problem with steering angle but only DSC light switched on , and I recalibrate it .

I jacked the car and moved the left rear tire the speed reaches 60km/hr and no error found


Sent from my iPhone using Tapatalk

[Timm]

Yes, that would certainly do it - well done!

[haydar alameen]

Yes, that would certainly do it - well done!

Sorry for my poor english , I mean the pulsation was caused by faulty rod when I replaced it and did alignment the pulsation in steering wheel resolved , but the DSC ABS light still turn off above 25 km /hr
no error by inpa ( its seem that the abs sensors not coded within it ! )

I jacked the rear left wheel and moved it ( turn the engine on ) The speed reaches to 60km / hr with no dsc abs light , that is mean the problem not in the system as the car knows it is moving , I am right ?

[haydar alameen]

It is the pre charge pump


Sent from my iPad using Tapatalk

[westaussie323i]

If I am reading this correctly can the ABS lights come on if a wheel is out of alignment? I have noticed my passenger front has worn badly on the outside edge and now pulling left and my ABS lights come on but I dont lose power steering function, speedo etc like I did on my M5 when it's unit died. 1996 750il but I am not getting any error codes with Torque Pro