If the ignition lock cylinder in your car is damaged and not able to help turn the ignition switch, your best method of repairing it is to replace the cylinder altogether. If the lock is damaged so you can't even insert the key, you may need to seek professional help in repairing it. Many cars have their own method of how the steering column and ignition switch are set up, so the method of removing the cylinder can vary.
Disconnect the battery inside the engine compartment, loosening the cable clamp nut on the black battery cable and separating the cable from the negative terminal. Use an insulated wrench
Remove the steering-column covers from the column. In most cases, remove the screws on the cover's lower half with a screwdriver and separate the two parts.
Insert the ignition key into the lock cylinder and turn it to the accessory position, which is in the opposite direction that you would turn it to start the vehicle.
Insert a small rod or screwdriver into the small hole on the the lock cylinder's housing, which is often on the bottom of the housing. Press the retaining spring for the cylinder with the rod and pull the cylinder and key out of the housing together.
Slide the new lock cylinder, with its own key inserted, into the housing within the steering column. Position the cylinder so the key will be in the accessory position. Turn the key to the "off" position and remove the key.
Reconnect the covers for the steering column with their clips and screws.
Reconnect the negative battery cable with its cable clamp.
