i have an e38 740i ,when the abs light wont stay on for a few secs on start up thre the second stage in the ignition the car will turn over bet will not fire.if the abs light stays lit for a second the car will start no probs.when you turn the key thru the 2nd stage of the ignition the light flicks thru but wont stay on for that 1 second.tempremental as all hell can go for days without fault then you cud be there for an hour flicking the key thru to start help......some say ews others say dry joint abs