Help with power steering ABS and speedo

[daviesbike]

Ok.. so I have read about this on the American forums but still there is no solution..

My LWB D3 4.2 will act normal and then in slow moving traffic the esp light will come on along with ABS light.. while this happenes the speedo stops working and the power steering goes either very light .. or turns off and goes very hard.. also lift mode in the car mmi is greyed out and dose not work.. it also sound's like the compressor just goes flat out during this period..

If I leave the car to cool down it all works as normal again .. over night the same its perfect .. and if I get in while its cold and get on the motorway it will be fine for hundreds of miles ..

But as soon as I slow down to city traffic speeds . Boom it all goes hay wire ..

Now a VCDS Scan reviled that the passenger side front abs sensor was at fault ..
So I replaced it and .. nada .. still the same as before..

Its intermittent but getting more frequent now and very irritating and embarrassing if some one is in the car

Has any one ever had this before ? Or known of a solution to this. . Ive tryed all sorts ..

Ive unplugged the abs module and sprayed with wd40 .. nothing
Ive checked with an oscilloscope to see if each wheel is picking up signal from the abs sensors (also speed sensors on d3 ) and interestingly there all fine when you rotate each wheel you can see on the screen its picking up signal.. however the passenger side front dose not pick up signal when this fault occurred


dose any of this make sense ? Or any one know what to check next ?


Real bug bearer now

Thanks Guys