My car is a 1982 Mercedes 380SL which you do not state on your list, on 1990 Mercedes-Benz 300SEL

Key will not turn ignition on to start car. I need to replace the ignition key barrel assembly. I cannot take the barrel out as the steering lock is on. How do i remove the assembly from car.

Asked by for the 1990 Mercedes-Benz 300SEL