abs warning lights

[huggies]

ok guys I have a 2001 model 530d with 140k miles

In themega heat returning from Le Mans this year the abs and pdc warning lights came on
Back home the diagnostics said faulty f/n/s abs sensor which was replaced
Now I can drive as far as I want from start up and no lights
However get out have a cup of tea and restart and every time those lights return on
Grrrrrrr!
Even with the warning lights on I am pretty certain the ABS is actually working

Again diagnostics seem to say a new f/n/s section of loom from abs sensor to to abs controller is needed
If that's correct nobody will supply my model.with that part.........why????

Can anyone please offer wise words of advise?
I have had the car 10 years and love it but the MoT looms!

[helix402]

May be a faulty abs ecu. Common failure on these. Cheapest place I found for a new one is Quarry Motors.