Unable to open trunk no master key

its were you stick the key in trunk,if u look under there its a black spot there u have to pressed it then it will pop open..

Actually if you look right above your license plate there is a plastic cover covering a key hole on your trunk. Look right up buy license plate lights remove the plastic cover and you can manually use a key to open the trunk.

It's a black cover right next to the switch you press to open the trunk. I have an S80 trust me it's there nobody knows about it.

1. Open trunk
2. Place latch in lock position
3. Pull inside trunk release to see what isn't moving
4. If trunk key won't turn, the key may be worn out and need to be replaced

have a power supply connected to the acc, in the vehicle,

if you look at the key there is a ridge running down the centre, the length of the key .it is this which stop you using it to open the trunk.ask a keysmith to grind it off......or buy a new key without the ridge.then turn key to the left or right to set lock to open with remote....

I vaguely recall reading something in the owners manual of my '97 328 regarding the trunk and the master key. Something about locking things with the master key so that valets cannot open your trunk with the valet key.
Try unlocking the driver door or the trunk with the master key (the original key that had the LED flashlight in it.

it a bad trunk lock or handle switch

thats because your regular key probably has an electic connection to the car so go to your volvo dealer and they should be able to clear anything up or replace it with a key that will work

My son was missing with the valet parking key while I was driving. When we got home and tried to open the trunk it wouldn't. It also made this buzzing sound when I push on the trunk latch.

Why don't you charge the battery under the hood so you can pop your trunk. You can't do anything with a dead battery.