There is always the assumption that ABS lights come and go at will. And, IME, that certainly seems to be the case sometimes. But, from what you describe, I would be defecting it as there is some consistency about the warning coming on when turning right. Quite likely an electrical fault rather than a brake fault but diagnostics will sort it.
Pete 
Change the Suzie spray a load of wd40 in it
Sounds like the susie is at fault. Although saying that, it’s not uncommon for the pins in the socket on the back of a Renault to rot out.
ChrisEnglish90:
nick2008:
Change the Suzie spray a load of wd40 in itReconnected the unit side and it’s gone !
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Fault cleared I would say water was in the plug or socket or a pin. Out of alignment causing it to not connect
ChrisEnglish90:
Came back on! Company it’s rented from is coming to look at it!Sent from my iPhone using Tapatalk
Is it on a Mavis rail by any chance
Have you tried another abs lead, sometimes its an easy fix.
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