What to Do When the Mercedes Trunk Won't Open?

[SanLeah]

If the Mercedes trunk won't open, it is likely due to a malfunction in the trunk switch handle. This requires disassembling the related components to inspect the trunk switch core and reinstalling it. Related Information: 1. Extended Solution: To inspect the trunk switch core, simply remove the trunk's interior trim panel and the rear tailgate panel until the switch core is visible. If the operation seems complicated, you can drive the car to a professional repair shop and have a technician handle it. They are more skilled and can better identify the cause of the trunk not opening, followed by timely professional repairs. 2. Other Possible Causes: If the issue is not with the switch core, consider other potential faults, such as whether the trunk lock is damaged.

[LaMax]

As a veteran Mercedes driver with over a decade of experience, I've encountered trunk opening issues several times. The most common cause is a dead key fob battery - when the remote fails, the trunk won't open. In such cases, check for the manual keyhole near the license plate lights (some models have a small cover there), then insert and turn your physical key. If the key works but nothing happens, it might be due to a drained car battery causing electronic system failure - try jump-starting. I once had frozen trunk lock mechanism in cold weather when lubricant solidified - some WD-40 spray fixed it. Never force it open though - Mercedes bodywork is expensive to repair. When all else fails, visit the dealership - their diagnostic computer can pinpoint issues like burnt relays or wiring problems. I always keep a spare key in the car as precaution.

[Omar]

As someone who enjoys tinkering with small inventions, when a Mercedes trunk gets stuck, start with the simplest solutions. Replace the remote battery with a new one—avoid cheap ones as poor-quality batteries don’t last long. If the key isn’t the issue, check if the unlock button on the car’s central console can activate the trunk release—sometimes the system mistakenly triggers a lockout mechanism, and simply restarting the car may help. Alternatively, try unlocking and relocking the doors to clear potential error codes. Electric tailgates are also affected by sensors; obstacles nearby can cause misjudgment, so clear the surrounding area first. DIY enthusiasts can inspect the fuse box—look for trunk-related fuses under the driver’s seat and replace them, but Mercedes’ circuitry is sensitive, so disconnect the battery before tinkering to prevent short circuits. If needed, contact a dealership for remote diagnostics—it’s time-saving and safer.

[McHenry]

I've been driving for decades, and safety always comes first. Don't panic if the trunk won't open. First, try unlocking it from inside the car—most Mercedes models have a trunk release button near the driver's door; press it a few times. Alternatively, use the spare physical key to locate and turn the keyhole under the rear license plate. If that doesn't work, don't tinker recklessly—calling roadside assistance is the most reliable solution. Mercedes' electronic components are delicate, and forcing them might cause more damage. Remember to turn off the engine to avoid system malfunctions. During your next maintenance visit, remind the technician to check and lubricate the locking mechanism to prevent future issues.