Being rookie owner of a W124 300D Notice a design issue that makes me ask the question Why?? When I purchased my car I received two keys one master and a valet. I understand that the valet key will not open the Glove Box or the trunk. This appears logical, however when I open the drivers door with the valet key the trunk unlocks so what's the point? I ask my buddy in Norway about his and it does the same thing. So am I missing something or did someone drop the ball in design?

snoopy007,

No, that is the way it works. If you want the trunk to be locked when using the valet key, you have to lock it with the master key, and then the vacuum locking system cannot open it. To make the driver and passenger door locks smart enough to respond differently to the two keys would be possible but more costly and likely less robust. Hope this helps, Jim

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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)

Yes, there are two locking positions of the trunk lock, one of which disengages it from the door locks...