Citroen Berlingo wipers and headlights

Try a BSI reset,
Google for procedure.

I done that still the same

Then it needs a "Lexia" global scan to confirm BSI failure.
Or take it out and send it to say BBA Reman for testing/repair.

Got car in citron they had car on there Diagnosis merchine at a cost of £90 per Hour they say it comes up with a foult they phoned me up to tell me they are having problems to fix it so they want to do another Hour to Diagnosis merchine that's a no there £90 now they have phoned me up saying they don't know what it is so he says it's a long shot but he's order a new B I S unit think there trying to con me surly he could have got new B I S unit in the first place