There are a few ways to open the trunk on a BMW 650i. One is to use the key fob; another is to use the button on the trunk lid. If neither of those work, there is usually a lever or release handle inside the car near the backseat that can be used to open the trunk from the inside.

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The easiest way to open the trunk is with the key fob. The key fob has a small button on it that needs to be pressed once to unlock the car doors and twice to open the trunk. If for some reason the key fob doesn’t work, try using the button on the trunk lid. The button is located in the center of the lid and can be easily pushed with your thumb.
If neither the key fob nor the button on the trunk lid work, there is usually a lever or release handle inside the car near the backseat that can be used to open the trunk from the inside. This lever is often hidden behind a panel, so it may take some searching to find it. Once it’s located, simply pull it up and the trunk will open.

We can conclude that there are several ways to open a BMW 650i trunk. The easiest way is with the key fob as you only have to press the small button on it once, but this isn’t always possible if the car’s battery doesn’t work. In this case, try using the button on the trunk lid or head into the back seat and use a lever that will pop open your BMW 650i trunk from inside. Many people find the lever near the backseat, but it can be hidden behind a panel so it’s worth checking all around your car if the trunk isn’t opening.