With a key or from the inside.
To open a trunk when there is no key and the cable release is broken, it is necessary to remove the back part of the rear seat. In some vehicles there is a small part of the bench seat back that will pull down to access the trunk.
Even if the trunk release is broken, the external key lock should be able to open the trunk.
With the power roof button. If its broken.... I heard there's a cable you can turn behind the trunk.. accessed from trunk.
dealers can do it - they have a way to get in from the engine compartment but won't share how it is done :(
how to get a 2001 isuzu trooper hood open if release cable is broken
Release cable in trunk up against firewall in rear
Look in the trunk- there ought to be an emergency release- you might have to pull the trunk's liner back a bit to access this cable with a tab attached to it.
If the cable to the rear trunk of your 2000 Porsche Boxster is broken and the FOB is unresponsive, you can try accessing the trunk through the passenger compartment. Remove the passenger seat for better access, and locate the access panel or a small opening behind the seat to reach the trunk release mechanism. If that doesn't work, you might need to remove the rear panel inside the trunk area or seek assistance from a professional locksmith or mechanic.
To open the bonnet on a Jaguar X-Type with a broken release cable, first, locate the emergency release mechanism, which can usually be accessed through the grille. You may need to use a flat tool to gently pry the grille open and reach the release lever. Once you access the lever, pull it to release the bonnet. After opening the bonnet, you can proceed to replace the broken release cable.
if you can pull out the cable cut off some of the cable were you can see the wire inside and pull the cable to open
Sawsall
HOW DO I OPEN HOOD ON CAR WHEN CABLE IS BROKEN