Need to know what car to answer. There are different ways from one vehicle to another
It should lock and unlock with the power door locks. If it is stuck in the locked position, there is a lever in the trunk on the driver's side behind the carpet that will unlock it.
Behind the passenger seat there is a trunk release lever. Pull it straight out to unlock the trunk. (This is for a roadster)
The easiest way to open up your hood is to have someone pull the hood release lever for you. While they are pulling on the lever, you can then pull up on the hood.
My 1998 Lexus LS400 has a small lever to pull that releases the trunk. The lever is on the left side of the dash about 8 to 10" from the door.This lever can be locked with the key, so that the trunk cannot be accessed without unlocking the lever with the key. Note that the Valet Key cannot be used to unlock this lever. Note that the gas fill door release is to the left of the trunk release lever.
Look in the trunk behind the door. Pull back the carpet and you will find an emergency release button.
Have a helper pull the release handle while you look at the release mechanism. This will tell you if the cable is broken or if the problem is in the trunk mechanism.
The bonnet or hood release on a Volvo S40 is located on the left side of the car under the dash. Simply pull the lever to unlock the bonnet.
a hood release lever is a lever that releases the hook in the front of the car so it can pop open.
If you look under the dashboard, near the top of the pedal, there is a release lever built into the mechanism.
There is a small metal lever back by where the foot lever rotates (normally the release cable is hooked into it) Pull it forward and the foot lever will release - careful it doesn't smack you in the face!
The parking release lever of C240 looks like ratchet.
Next to the driver's seat, between the seat and the sill plate is a pair of levers. The front one opens the "Hood" and the rear lever opens the "Trunk". As long as your Central Locking System is working, and you unlocked the car with the key fob, they will allow them both to open. If your central locking system is not working, they are locked and will open neither.