2008 Mercedes C-Class Owner's Manual - Page 273

Controls in detail Trunk Valet locking Close the trunk ( page 270). Remove the mechanical key from the SmartKey ( page 424). Insert the mechanical key in the trunk lid lock. Turn the mechanical key clockwise to position 2 to lock the trunk. Remove the mechanical key from the trunk lid lock. The trunk remains locked even when the vehicle is centrally unlocked. i You can only cancel the separate trunk locking mode by means of the mechanical key. Insert the mechanical key in the trunk lid lock. Turn the mechanical key counterclockwise to neutral position 1 to unlock the trunk. You can now open the trunk ( page 269). i To deny any unauthorized person access to the trunk, e.g. when you valet park the vehicle, lock it separately with the mechanical key. Leave only the SmartKey or SmartKey with KEYLESS-GO* (Canada only) less its mechanical key with the vehicle. 1 Neutral position 2 Locked 272