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Hi, welcome to Just Answer. My name is***** you looking for the instructions to replace the mechanical steering column adjustment lock?
If you are fairly handy you could probably repair this yourself. You will need to replace the mechanical lock slide. It is item number 20 in the diagram below. I can send you detailed workshop instructions for doing this yourself. It should take you about an hour to install. I've sent you an additional service offer for the workshop instructions. Let me know if you would like to proceed.
It's worth a try. They can break in different ways. If you can put a pin in yours and get it to lock down it would work for awhile. I would avoid adjusting the column once you get it locked. Sorry about the additional service fee. I have to pay a subscription to the data provider. It's just a way for me to recoup some of the cost. I've attached instructions for removing the paneling below the dash that should be helpful.