some graphite-based lubricant might help as well

you can grind down the pin and pull the assembly (diesel giant's tutorial) for the cost of a grinding drill bit ($5) assuming you already have a drill and then start the car with a screwdriver if you're really that adverse to spending money. you should expect a $300 car to have some issues.

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1992 300D 2.5T 249k - Parked with a bad transmission
1981 300SD 142k - Daily driver