Why can't the trunk of Changan CS75 be locked?
3 Answers
Replace the control circuit, linkage rod, and hydraulic support rod. Troubleshooting methods for trunk lock malfunctions. If you have always been using the remote control to open the trunk lid, it may be because the lock core is dirty or rusty. Spray some rust remover into the lock core a few times. The trunk itself may have issues, such as a broken wire or other problems causing the car trunk to fail to open.
I previously encountered an issue with the trunk lock on my Changan CS75 not securing properly. Common causes include mechanical faults in the lock mechanism such as jamming or wear, wiring connection problems leading to signal interruption, or a depleted remote key battery preventing command transmission. Other car doors not being properly closed can also affect the trunk lock due to its interlock mechanism. It's advisable to first manually check if the trunk lid is fully closed by pushing it firmly a few times to see if it locks. Then, inspect the trunk button and lock cylinder for any blockages like dust or small objects stuck inside. If the problem persists, check if the fuse is blown; locate the trunk-specific fuse in the engine compartment fuse box and try replacing it with a new one. Electronic issues are common, such as sensor malfunctions falsely indicating the door is open—using the key in the manual lock cylinder can help. A trunk that doesn't lock securely can compromise the safety of stored items, so I recommend promptly visiting a 4S dealership to diagnose the issue with specialized tools rather than attempting forceful repairs. Regular maintenance, like periodically applying lubricant to prevent rust, can significantly reduce the likelihood of such faults.
I also encountered the annoying issue of the trunk not locking properly when driving my Changan CS75. The causes are mostly electronic-related: weak remote key signal, possibly due to a dead battery—try replacing it. Overly sensitive or falsely triggered sensors, such as debris blocking the sensing area, or a software bug in the car—simply restart the system by disconnecting the car battery for five minutes and reconnecting it to relearn the lock signal. Another possibility is a faulty trunk button; check it by pressing manually. If the light doesn’t turn on, it indicates a blown fuse. I checked forums, and many reported relay failures in the fuse box—be careful not to get shocked when replacing it yourself. Don’t overlook the basics: ensure the door is fully closed and try locking it multiple times. A trunk that won’t lock exposes belongings to theft and affects daily travel safety, so I’ll take my car to a professional shop soon for a full diagnostic of the circuit modules by a technician.
