If the key doesn't turn at all, make sure you have the right trunk key, i.e. one that worked before. Many times the ignition and trunk key are different. If it is the right key then the cylinder may be frozen. The remote opens the latch a different way. Try spraying some liguid wrench into the key hole and keep trying to turn it. if the works spray silicone spray or lock lubricant to oil the lock afterwards.
If the cylinder does turn and doesn't release the door, look inside to see if the inside lock mechanism is broken.
pick the lock or use a skeleton key
Won't the valet key open the trunk
Try the key in the trunk lock ...
Put your key in the trunk lock and turn.
Remove the plastic cover from the emergency trunk lock (to the left of the release button) and then use the Key blade from the remote key fob by holding the button on the side and pulling it out.. Then use this key in the mechanical lock to open the trunk.
there is a lock out switch on the actual latch witch locks out key
how do i replace a trunk lock with another lock that has a key
Doesn't it have a key lock also?, if not you will have to take the back seat out and crawl through and open it from the inside, there should be a handle on the lock on the inside of the trunk that you can pull and it will open.
With the key inserted into the lock.
Use you key to open the lock.
With the key, the lock is underneath the white, pentagon-shaped emblem on the trunk lid.
drill out the centre of the lock and then use a screwdriver like a key. once open you will be able to remove the old lock and replace it with a new one that has a key.