The car sat all winter, started it up yesterday and wood not shift out of first gear. It was alittle low on fluid, filled it up and still no shifting, I checked all the vacuum lines and it looks good. Sometimes if I let up on the gas it will shift into second but that is it, will not shift anymore. Any ideas?

Bleed the system

check down shift button too.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

What do you mean bleed the system? How do I do that?

I unpluged that and still will not shift.

I'm Sorry I thought your car has a manual transmission