Why can't the Mazda3 Axela's trunk be opened with the remote key?

[DiKing]

First, determine whether it's a remote issue or a vehicle issue There is a button next to the driver's seat that can mechanically open the trunk. If it doesn't work, it indicates a problem with the trunk lock. In this case, you can check the trunk's condition through the emergency escape channel in the rear seat. If the lock is just tangled with debris, simply loosen it yourself. If there is no obvious obstruction preventing unlocking, it is recommended to visit a repair shop for professional assistance. If the button next to the driver's seat lights up, it indicates a remote issue. Insufficient power in the remote can cause weak signals, preventing the receiver from receiving them. Simply replace the remote's battery. If the remote is damaged, it is recommended to visit a repair shop for servicing. The main factors affecting the remote control distance are as follows: 1. Transmission power Higher transmission power increases the distance but consumes more battery and can cause interference. 2. Receiver sensitivity Increasing the receiver's sensitivity extends the remote control distance but makes it more prone to interference, leading to unintended actions or loss of control. 3. Antenna Using a straight-line antenna and keeping them parallel increases the remote control distance but occupies more space. Extending and straightening the antenna during use can enhance the remote control distance. 4. Height Higher antenna placement increases the remote control distance but is limited by practical conditions.