Hi, I've just purchased a 2.5D 2002 Voyager, all was well on the drive home last night, was warned about making sure radio etc was off when left car, when I brought it there was a beeping noise when the drivers door was open, I have since found this means the key is still in the ignition, even though it wasn't? Is there a easy fix to this, or will it mean a new ignition barrel?