Thanks for the reply,yes it’s a motorhome,you are correct about Fiat,they say there’s nothing wrong but I can drive 1000 kw with no problem on the motorway overtaking many vehicles,but the next day it will activate 3 times in 5 km in windless conditions when overtaking lorries it applies the abs for a second very scary,I just hope more vans have the same problem so Fiat might do a recall,it even did it on a road test with a Fiat mechanic sitting next to me he said what the———was that! but no fault was recorded on his computer