I do not think that old caps and rotors would prevent the car from restarting, if you were able to start it to begin with.
I think you have an electrical gremlin - which is not unheard of for this model year.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D