What are the reasons why the trunk of a BMW GT535 won't open?

[DelElliot]

Here are the specific reasons why the trunk of a BMW GT535 won't open: Foreign objects in the latch slot: When there are foreign objects in the trunk latch slot, it is necessary to clean the slot thoroughly. Damaged trunk lock hook: If the trunk lock hook is damaged and deformed, it can cause the hook to get stuck with the trunk latch slot. The trunk lock hook needs to be repaired, and if necessary, a new part should be replaced. It could also be due to issues with the linkage rod or the lock cylinder. Overly stiff spring rod: An overly stiff spring rod can create excessive pressure when closing the trunk. In this case, it is necessary to replace the spring rod with one that has moderate stiffness.

[DiTeagan]

I've been driving a BMW GT535 for several years, and the most common issue with the trunk not opening is usually a dead key battery. I've encountered that before—pressing the remote with no response. At first, I didn’t pay much attention, but later I realized it might be a faulty or frozen trunk lock motor, which often happens in winter. BMW's electronic systems are sensitive, and fuses can blow easily, especially if there’s a short circuit. I recommend trying manual unlocking first—there’s an emergency release handle at the back of the car; pulling it can resolve urgent situations. If that doesn’t work, it might be an issue with the internal control unit affecting the electric lock mechanism. Whatever you do, avoid forcing it open, as it could damage the car—it’s safer to get it checked at a 4S shop. Don’t ignore such faults for too long, as items in the trunk could get damaged over time.

[ColinFitz]

I often repair BMWs, including the GT535, and there are many reasons why the trunk won't open. Generally, start with the simplest checks: first, try replacing the remote key battery, as a dead battery can't transmit signals. If there's no response, check if the trunk fuse in the fuse box is blown—it's located under the dashboard on the driver's side. If the motor or lock mechanism is stuck, this is common in older cars or after corrosion from rain. Next, check if the wiring connectors are loose, especially if the wiring harness near the trunk is worn. BMW trunks are electronically controlled, so a faulty relay can also cause issues. You can do some basic checks yourself, but for complex problems like a failed control module, professional diagnostic tools are needed. Don't delay, as this could pose a safety risk.