I need an antenna motor. I found one at a local junk yard in a 300SD (I dont know what year, but it has a 5 cylinder motor.

The trunk is closed, and no key anywhere.
How can I open the trunk without doing any damage to the trunk lid??

Well it would be nice to get what you wanted without doing any damage. Sometimes that is impossible to do. Since the car is in a junkyard and probably not too many days from the crusher, I would not worry about the damage unless the junkyard specifically tells you not to damage anything or more specifically, don't damage that trunk lid. Without that warning, you can use any means to get what you need/want.

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Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

If one of the rear lights is in bad shape you could punch it out and reach in/move the vacuum lever to unlock the trunk lock. Only will work if the trunk is not in the "horizontal" locked position (requires key)

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Call the dealer and order new keys.

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

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Thank you all for your thoughts/ideas.
I am sure I can come up with something using these ideas!

same thing on my parts car. Believe it or not the lock cly can be destroyed w/ a trashed screwdriver and hammer..or drill if you can. From there, if the vacuum isn't engaged, the trunk lock can be pushed to release.