
First, remove the interior trim panel of the trunk. The trim panel is secured by clips, which can be released. Next, remove the screws and clips on the back of the rear tailgate body. Remove the two central fixing screws and clips. After releasing the fixing method of the rear tailgate switch trim panel, you can see that the switch core is disconnected. This causes the switch handle to fail to open the trunk. Simply reinstall and secure the switch core.

I've also driven a Volvo S90. If the trunk won't open, don't panic. First, check if the remote key battery is dead; try replacing it with a new one. If the key is fine, it might be an electronic lock malfunction or a blown fuse. Look for the trunk-related fuse in the fuse box near the driver's seat—it's easy to replace yourself. Volvo designs include a manual release mechanism under the inner trunk panel cover; just pry open the cover with a small screwdriver and pull the cord to force it open. Remember to ask technicians to pay extra attention to the lock system during regular maintenance to avoid similar issues. If none of these work, it's likely a software bug—just visit the dealership for a system update. The trunk is a high-frequency component in daily use, and regular maintenance can save a lot of trouble. Especially for luxury cars like the S90, the electronic systems are a bit more complex, but the reliability is still good.

As a tech enthusiast, I believe the issue with the Volvo S90's trunk not opening is mostly related to the electronic system. First, confirm if the key signal is being interfered with, such as by a strong electromagnetic field nearby; try using the remote in a different location. Check the trunk control module—software glitches might be the culprit. Try disconnecting the car battery for a few minutes and then reconnecting it, essentially performing a soft reboot. Press the trunk button on the in-car console or the key fob multiple times—sometimes this can wake it up. If sensors are blocked by dust, they might malfunction, so clean them gently with a soft cloth. Volvo's smart app can remotely diagnose the vehicle's status, and downloading the latest software updates can help prevent issues. The trunk lock is integrated into the car's body network, which is complex but efficient. DIY checks with these steps usually solve the problem, but if not, visit a professional shop for a diagnostic scan.


