I got a 2006 vectra cdti 150bhp which I lost the key…
I got a service guy out from Vauxhall with new key and to reprogram it in..

He was using the tech 2 device but when finished the mileage display was just showing four broken lines with no numbers etc but he says it was like that when he started but i checked it yesterday and it was displaying them alright ..
Does anyone know if this device can mess up the cluster as will contact vauxhall again if I can prove it was their mistake and get them to fix it