If you lock the trunk with your key, turning the lock all the way right or left (I forget which, the owner's manual says) then the valet key will not unlock the trunk. That way you can lock valuable stuff in the trunk and give the valet access to the other doors and the ignition.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .343,000 miles Wife's car
2005 E320 CDI . . 148,000 miles My car
Santa Rosa population 177,300 (2026 projected)
Total. . . . . . . . . . . . 668,300
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970