How to adjust the trunk popping force?

[Denise]

Locate the opening tension spring of the trunk. For new cars, it is normally set at the first gear. If the opening and closing force of the trunk lid is insufficient, it can be adjusted to the second or third gear as needed. If the hydraulic strut of the trunk has lost its elasticity, it is best to take it to an auto repair shop or a 4S store for repair. The hydraulic strut must not be disassembled.

[TessaLee]

Last time I helped my neighbor adjust the trunk of his old Jetta sedan. The spring tension was insufficient, causing the trunk to only open a small gap. First, locate the spring hooks on both sides of the trunk. Use a pry bar to secure the spring compression slot, then move the hook one notch toward the extension direction to increase tension. If the hydraulic struts fail, it becomes more complicated - you'll need a socket wrench to remove the old struts, and must select replacement struts with the correct pressure rating. This kind of physical work is best done with two people cooperating, as sudden spring release can easily injure hands. After adjustment, remember to repeatedly test the opening/closing angle - it should stay stable when paused mid-way to be considered properly adjusted.

[VanCecilia]

For us girls doing it ourselves, the focus should be on the hydraulic struts, as they are key to adjusting the spring force. Last winter, when my Polo's trunk froze and wouldn't pop open, it turned out the struts were leaking oil. When buying new struts, be sure to measure both the fully retracted and fully extended lengths. During installation, pry open the metal clips on the fixed end and use a flathead screwdriver to push against the retaining spring for removal. When installing new struts, align them vertically with the ball socket interface and press firmly until you hear a click, indicating proper engagement. It's recommended to replace both struts simultaneously to maintain balanced force.

[MacLondyn]

New cars are actually the easiest to adjust, as the position of the stopper blocks can control the popping height. For example, with my Lynk & Co 03, you can see a rubber knob on each side when you open the trunk's interior panel. Turning it clockwise increases resistance, while turning it counterclockwise reduces resistance. Test it every 90 degrees of rotation, and adjust until the trunk pops up without hitting the ceiling and doesn't rebound. If the spring is aging and lacks strength, you can buy auxiliary springs on Taobao for about twenty yuan. Installing them solves the problem without needing to replace the entire hydraulic strut.

[LeCalvin]

From a repair shop's perspective, sedans and SUVs require different adjustment methods. Sedans primarily rely on spring clip displacement, requiring a ratchet wrench to loosen hinge screws; SUVs depend on hydraulic strut pressure values, which are typically marked on OEM struts. Special caution is needed with luxury cars like Mercedes-Benz - their electronic locking mechanisms can affect pop-up travel, and improper adjustment may trigger fault codes. A money-saving tip: Adding hydraulic fluid into aging strut sleeves can extend service life by about six months, but replacement is ultimately necessary.

[JacksonLynn]

Prepare the right tools before starting: wear gloves to prevent slipping and scratching, use a 10mm socket to remove the fixing nut, and employ needle-nose pliers to adjust the spring clip position. When replacing hydraulic struts, pay attention to the working space—for compact models like the Fit, you'll need to remove the entire trunk mat. After adjustment, test whether the lift height is even; if one side is stuck, check the track lubrication. A reminder for car modifiers: upgrading to a larger spoiler requires reinforcing the spring tension, otherwise it won't lift at all and will accelerate the wear of the hydraulic struts.