The steering lock on my 1988 W124 230CE is locked on and I cannot turn the ignition key to position 1 (and obviously any other position). The failure happened today when my wife was using the car so I don't have a reliable chain of events (sorry dearest). It had been getting a bit difficult to turn, but much more difficult with the new ignition key I bought recently rather than the original one the car came with when I bought it. Is there any chance I can use WD40 to free it, or do these symptoms mean it is kaput and I am looking at a mega-money barrel replacement? If so does anyone have a ballpark figure? Cheers all.