reno will charge lots as with all reno's when the key loses code you have to have it taken to them as they know the code. there is a way round this as its an immobiliser fault (this has lost sync with the key) in the handbook should be a 4 digit override code, pressing the pedals and turning the ignition as it states will let you immobilise the immobiliser so you'll just have to open car with key and drive, and lock with key. my stepdad done this on a N reg laguna, I had to do the code and press the pedals but it is easy and you can do it yourself at no expense.