The reasons why the trunk cannot be opened are as follows: 1. The trunk linkage rod or lock cylinder is broken. 2. The trunk is not unlocked. 3. Trunk lock mechanical parts failure. 4. The boot latch is broken. 5. The trunk door lock switch is broken, etc.

解决方法：

resolvent:

1、连动杆或者锁芯问题：如果经常是用钥匙打后箱盖的，那是连动杆断了，到修理厂去开。如一直是用摇控器开后箱盖的，那是锁芯脏了或生锈了，用除锈剂往锁芯里喷几次就能打开。

1. Linkage rod or lock cylinder problem: if you often use the key to open the trunk cover, the linkage rod is broken. Go to the repair shop to open it. If the trunk cover is always opened with the remote control, the lock cylinder is dirty or rusty. Spray rust remover into the lock cylinder several times to open it.

2、没有解锁：没有用遥控钥匙解锁，所以会很难打开。打开前要按下钥匙的开启按钮，或者看看是不是钥匙电池没电。

2. No unlocking: it is not unlocked with the remote key, so it will be difficult to open. Press the start button of the key before opening it, or see if the key battery is dead.

3、机体零件故障：后备箱本身出问题，比如，后备箱的线断了或者是其他后备箱原因导致汽车后备箱打不开。

3. Body parts failure: there is a problem with the trunk itself. For example, the trunk line is broken or the trunk cannot be opened due to other trunk reasons.

4、五门车一般无法从内部开启：像一些硬派越野车，为了防止在行驶中误触，可能会造成人员的伤亡，一般车内是不会设置后备箱开关的，所以只能在车外开启。

4. Five door vehicles generally cannot be opened from the inside: like some hardline off-road vehicles, in order to prevent accidental contact during driving, which may cause casualties, the trunk switch is generally not set in the vehicle, so it can only be opened outside the vehicle.