The trunk space on your Mercedes-Benz is an important area that you load and unload items into. Whether you're driving a car or SUV, your rely on your trunk to be able to open and shut easily. The tailgate or liftgate on a car or SUV isn't as pronounced as on a truck, but your trunk does need to be able to lift and shut easily. It's also important that this area is able to be locked and secured to keep the contents protected. The locking assembly in your trunk space is something that allows you to latch the handle on the area. It works when you put your key into the cylinder that will lock or unlock the space. The tailgate locking assembly on your vehicle can start to wear out over time, which could require you to make a replacement. If you find this area doesn't lock or latch, you have an issue. Another issue your tailgate can have is closing slowly on it's own instead of staying open. Be sure to invest in OEM Mercedes-Benz tailgates and liftgates if you need to make sure the space is secure.