Careful with your door check straps. Back driver's side door had been creaking ever since I got the car. I've lubricated it periodically. Today, I park on a narrow pretty busy street and open that door to grab some tools to work on an apt. DOOR WONT SHUT. There I am parked just around a blind corner on a busy street with an open door. Couldn't drive it. Couldn't leave it. Afraid someone would make the turn and clip the door. Took me about 15 minutes to figure out there was nothing I could do to release it and then remove it. Lucky for me I happened to have a small hammer on hand so I could drive out the pin on the outboard end.
Strap is still sitting inside the door so I haven't been able to figure out exactly what jammed and whether I could have released it had I known more about how it functioned.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13