Why Mercedes Trunk Opens By Itself? 6 Reasons [How to Fix]

Mercedes-Benz is known for producing luxury cars equipped with advanced technology to provide convenience and comfort to its drivers. However, a recent issue has surfaced with some models wherein the car’s trunk opens by itself. This unexpected malfunction has caused inconvenience and safety concerns for the car owners. 

6 Known Reasons of Mercedes Trunk Opens By Itself are:

1. Accidentally pressing of key fob trunk button.
2. The key fob is damaged or malfunctioning.
3. Short circuit or a faulty trunk release switch.
4. A software glitch or bug.
5. Faulty Or damaged trunk latch.
6. Aftermarket modifications.

In this blog post, we will delve deeper into this issue and explore the possible causes and solutions for this problem.

Why Mercedes Trunk Opens By Itself?

Several reasons could lead to opening the Mercedes trunk by itself. Here are some possible explanations:

1) Accidentally Pressing of Key Fob Trunk Button.

You or someone else might accidentally press the trunk button on the key fob or inside the vehicle, causing the trunk to open. Be cautious when handling the key fob in your pocket or operating the interior trunk release button to avoid inadvertently opening the trunk.

2) Key fob malfunction

If the trunk button on your key fob is damaged or malfunctioning, it could send a signal to open the trunk without your knowledge. Check the key fob for any visible damage and ensure the buttons are not being pressed accidentally.

3) Electrical Wiring Issue

An electrical problem, such as a short circuit or a faulty trunk release switch, could cause the trunk to open unexpectedly. This may require professional diagnosis and repair.

4) Software Glitches

Modern Mercedes-Benz vehicles are equipped with sophisticated computer systems. Sometimes, a software glitch or bug may cause the trunk to open independently. You can try updating the vehicle’s software or have a Mercedes-Benz dealership check for any known issues.

5) Faulty Trunk Latch

If the trunk latch is damaged or worn out, it may not securely hold it closed, causing it to open unexpectedly. Inspect the latch for any signs of wear or damage and consider replacing it if necessary.

6) Aftermarket Modifications

If you have made aftermarket modifications to your vehicle, particularly the electrical system, this could cause unexpected issues with the trunk opening.

How to Fix these issues?

• Be more cautious when handling the key fob and operating the interior trunk release button.
• Consider using a key fob cover or case to prevent accidental button presses.
• Replace the key fob battery.
• Check for physical damage and have the key fob repaired or replaced if necessary.
• Consult a qualified mechanic or Mercedes-Benz dealership for a professional diagnosis and repair of any electrical issues.
• Update your vehicle’s software by following the manufacturer’s instructions or visiting a Mercedes-Benz dealership.
• The dealership may provide a fix or software update in case of known issues.
• Inspect the trunk latch for damage or wear.
• If needed, replace the trunk latch with a new one or have a professional perform the replacement.
• Review any aftermarket modifications made to the vehicle and ensure they are not causing conflicts or issues with the trunk release system.
• Consult a professional to rectify the issue or remove the modification if necessary.

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If you have any questions feel free to ask in the comment section.