Not sure where its leaking from all they said was it was leaking. Just called them and queried it and they admitted that it migh need the belt changing after all. Amazing what a difference 5 minutes and a bit of knowledge can do. They will re-quote. The other thing they said was the frame needs re-allignment, which can take up to another 2 hours and £180. Ergonomic machine required apparently??? Can any Lexus dealer be trusted?