John, as Mursal has said, they are full electric, no hydraulics involved. Nissan know about the problem as its wide spread, but, they choose to ignore it!! Cost to have electric steering motor changed by Nissan? approx. £1200!!!!! Or, I can purchase a recon one with life warranty from BB-Reman for £450 and have our Tech at work fit it, BUT........ I've had codes read and there is a communication problem resulting from a loose ground wire that is causing the PS light to illuminate. So I've now got to remove and clean all earth wires and hope the fault will clear. Either way its gotta be a darn sight cheaper than a new electric steering column!