Trunks are one of the simpler components of a vehicle, but just like any other mechanical part, they can malfunction. Sometimes your trunk won’t lock, while other times it won’t even open.
Common reasons for this to happen:
Broken latch: The latch is what allows your trunk to close. The latch in your trunk operates the same as the latch in your door or seatbelt. There is a connecting unit on the trunk and on the frame of the car, and when you close the trunk the two pieces latch together, sealing the trunk securely. When you open the trunk, the latch releases and allows the door to unhinge. If this latch is damaged while the trunk is closed, it can lose its ability to release. This will often happen if the car absorbs impact around the trunk. When your latch breaks, you’ll be unable to open the trunk.
Damaged trunk cable: Some vehicles don’t have a handle on their trunk, and rely entirely on a lever in the cabin (or a button on the keys) to open. In this case, you release the latch not by pulling on a handle on the trunk, but by tugging on a trigger (usually near the driver’s seat), which accesses the trunk latch via a cable. When this cable is broken, there is no connection between the trunk latch and the trunk opening lever, and you won’t be able to open the trunk.
Lock actuator malfunction: The lock actuator is what controls the lock on your trunk. It is a small motor with gears that shift when you lock the trunk, so that the latch cannot release the door. If this motor dies, the trunk latch will no longer be able to lock or unlock.
Broken locking mechanism: When you press the trunk lock button inside your vehicle or on your car keys, it sends a signal to the actuator to lock the doors and the trunk. If this button doesn’t lock any of the doors, then most likely the battery in the button is dead or the button is faulty. If the button locks the doors, but doesn’t lock the trunk, then the actuator is probably at fault.
What to expect:
A top-rated mobile mechanic will come to your home or office to determine the source and cause of the trunk malfunction, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.
How it's done:
The mechanic will inspect the entire trunk locking system and determine what it will take to restore the proper locking and unlocking functions.
How important is this service?
You won’t damage your vehicle by driving it if the trunk won’t lock or open. However, a car with a trunk that won’t lock invites theft. If the trunk opens while you're driving, you could potentially lose belongings kept in the trunk or obstruct your visibility out of the rearview mirror.