I know you think I'm nuts but I took a cold key ( not in sun) from my pocket and put it in the cylinder and when I was thru diddling with the key it was almost to hot to touch.
Battery was almost dead as well.

I first thought well its a hot day but the longer I held my thumb on the cylinder I had to pull away it got so hot. remember I am stuck in the first position too- I cant get it to turn to ACC

I'm in Orem btw Brandon...

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81' 240d 4 spd 140k on the clock

The Ignition Switch is on the end but that is about 4 inches or so away from the key. There is nothing Electric right hear the Tumbler. Maybe something in the Ignition Switch Melted and that is why the tumble will not move.

7- Ignition switch
5-6- Lock Tumbler
2- Lock Tumbler Cover

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

In case there is something electrical causing excess heat, you might want to try taking your battery out overnight to charge it, then attempt to turn your key tomorrow before re-installing the battery. Since the problem happened today, on the HDOY - cooling off overnight might help.

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1979 240D, 4spd manual, Power Sunroof, manual windows, 147k miles, Pastel gray/Black MB Tex.
1991 300D 2.5 - Smokes like it's on Crack!

I would suggest wiggle wiggle wiggle....Just move the key around a good bit while shaking the steering wheel. Mine stuck once and it finally turned. I then replaced it.