I have a 1989 300E the key has never worked in the trunk...... however when I unlock the passenger door the trunk and gas door along with all other locks unlock. Just the other day I went to unlock the door and nothing would unlock except the door with the key in it. now is there a way I can activate the vacuum pump to unlock the trunk and fuel door. I live where I don,t ever need to lock the trunk. or the fuel door . . . . . awhile ago I installed a new ignition switch and steering lock and it acted this way until I reconnected the key buzzer switch. It has worked fine ever since until this week. Now I am in a predicament my wife left a salad under glass in the trunk and no way to retrieve it.

Check the vacuum pump under the rear seats, I believe it's on the psg side and make sure all the vacuum lines are properly connected and that it gets power.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).

You can they say , open the boot through the first aid box after removing it .