What Causes the BMW Trunk Switch to Fail?
2 Answers
Here are the reasons why the trunk of a BMW car cannot be opened: Linkage rod or lock cylinder issue: If you frequently use the key to open the trunk, the inability to open it may be due to a broken linkage rod, which requires a visit to a repair shop to resolve. If you always use the remote control to open the trunk, the lock cylinder might be dirty or rusty. Spraying a rust remover into the lock cylinder a few times can help open it. Not unlocked: Before attempting to open the trunk, it's best to press the unlock button on the key and check if the key's battery has power. Mechanical component failure: The trunk itself might have issues, such as a broken wire or other trunk-related problems that prevent it from opening.
After driving my BMW for so long, I've encountered several instances of trunk switch failure, which is quite annoying. The most common cause is a blown fuse, often due to excessive current when turning on the lights. Another time, the wiring connector came loose, causing poor contact after vibrations and making the switch unresponsive. If the locking mechanism gets stuck, such as from foreign objects or freezing, it can also prevent movement. Once during winter, my trunk was frozen shut, and I had to pry it open manually as an emergency measure. I recommend first checking the fuse box and trying a new fuse. If that doesn't work, inspect the cables for breaks, use the key to open the trunk manually in emergencies, and visit a professional repair shop promptly to avoid compromising travel safety.
