Subaru owners are bypassing modern vehicle sensors by using carabiners to trick liftgate mechanisms into a “closed” state, a workaround designed to prevent battery drainage during extended camping trips. The technique, popularized by TikTok user Adrienne (@lilaclaurels), involves inserting a carabiner into the latch until it clicks, signaling the car’s computer that the trunk is fully secured even while it remains open.
Why Do Modern Vehicles Drain Batteries When Open?
Modern vehicles remain in a “ready” state even when parked, according to automotive experts. When a liftgate or door is left open, the vehicle’s body control module (BCM) continues to monitor the sensor status, often keeping interior cabin lights active and communication systems powered. This persistent electrical draw can deplete a battery over several hours, a phenomenon frequently reported by car campers. While some vehicles allow users to manually disable interior lights, many newer models require the physical latch to be engaged to fully enter “sleep” mode.
Before resorting to hardware hacks, consult your owner’s manual. Many modern SUVs allow you to toggle “door open” alerts or cabin light settings through the infotainment menu, which may solve the power draw issue without needing to manipulate the physical latch.
The Rise of Owner-Led Automotive Hacks
The carabiner trick highlights a growing trend of “unofficial” community support networks where owners share practical, low-tech solutions for high-tech frustrations. According to social media discussions on platforms like TikTok and Reddit, these user-generated fixes often fill gaps where manufacturer manuals remain silent. Other popular hacks within the Subaru community include using binder clips to secure bug screens to sun visors and placing tennis balls over hitch-mounted bike racks to prevent accidental injuries at campsites.

How to Safely Use the Carabiner Method
To implement the fix, users manually push the carabiner into the latch mechanism located on the liftgate until it engages the locked position. To reverse the process, the driver must press the release button—sometimes multiple times—to reset the latch before attempting to close the trunk. Failure to release the latch before closing the door can result in mechanical damage to the trunk mechanism. Owners should verify their specific model year’s latch design, as electronic locking systems vary significantly between vehicle generations.
Frequently Asked Questions
Will this trick work on non-Subaru vehicles?
The latch mechanism is a universal component in most vehicles, but the electronic response varies. While the physical action of “tricking” the sensor may work, some vehicles may trigger an alarm or fail to recognize the state change correctly.
Can I damage my car by manually locking the latch?
Yes. Forcing a latch closed with an object can cause misalignment. Always ensure the latch is fully reset before attempting to close the trunk normally.
Is there a risk of the battery dying despite this hack?
Yes. If other accessories—such as 12V fridges, phone chargers, or infotainment systems—are left running, the battery will continue to drain regardless of the door sensor status.
Have you discovered a unique hack for your vehicle while camping? Share your experiences in the comments below or join our community newsletter for more automotive maintenance tips and tricks.










