Assuming the switch will turn to the proper position a piece of wire or a paper clip will work, but I would file a point on the end to guide it. I used a large canvas sewing needle. Point helped guide pin in.

I happened to have a new lock cylinder in my desk. I tried a paper clip to reease. Only the small size clip would fit in and it really was too bendy. Need something stiffer.

From some pictures on-line it seems that the release hole is not always the same size.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5