The Subaru Forester is a popular choice among drivers because of its reliability, safety features, and versatility in a compact SUV package.
Designed for convenience, the power liftgate makes loading and unloading easy, but unfortunately, it doesn’t always work as intended.
Many Forester owners have encountered issues with the power liftgate across various model years, from refusing to open to unexpected closings.
Let’s look closer at these common problems, what may be causing them, and practical solutions to get your liftgate working reliably.
1. Liftgate Won’t Open or Close Properly
Forester owners frequently struggle with pressing the liftgate button—whether on the key fob, interior, or exterior handle—only to have no response or inconsistent movement. In some cases, the liftgate may start to open or close but stop midway or reverse direction unexpectedly.
This issue has been widely reported in fourth-generation models (2014-2018), although some newer models have also shown similar problems.
For example, owners of the 2015 Forester often report random liftgate failures, while 2017 models have been known to beep and immediately close after beginning to open.
Various causes contribute to this problem. The liftgate control module, which is responsible for managing electronic operations, may malfunction due to software or hardware issues.
Defective motors, actuators, or corroded wiring can also interrupt power flow, and blown fuses or relays may prevent the liftgate from functioning.
Reprogramming or replacing the liftgate control module is often effective in tackling this. Subaru issued a Technical Service Bulletin (#07-112-18) for software updates addressing liftgate problems.
Component inspection and replacement may restore proper function for cases involving damaged motors, actuators, or wiring. Checking and replacing blown fuses and relays in the liftgate’s circuit can also resolve the issue.
2. Liftgate Opens or Closes on Its Own
Some Forester owners report their liftgate opening or closing spontaneously, either when parked or alarmingly while driving. If this happens without warning, it poses security risks and can cause safety concerns.
This issue is more common in models from 2014 to 2018. A 2016 Forester owner, for instance, noted that the liftgate would open by itself when other doors were opened or when unlocking the car. In the 2018 models, there are reports of the liftgate unexpectedly closing while drivers are loading cargo.
Faulty sensors, switches, electrical shorts, or a malfunctioning key fob can trigger these unwanted movements. The key fob could send rogue signals due to stuck buttons or internal faults.
The solution involves inspecting and, if necessary, replacing any faulty sensors, switches, or key fob components. Damaged wiring should also be repaired to prevent unintentional signals. Reprogramming the liftgate control module to address software issues may be beneficial in some cases.
3. Liftgate Closes Unexpectedly or Fails to Stay Open
Another frequent issue is a liftgate that won’t stay open or closes by itself after being opened, which can be especially concerning if someone is loading or unloading items from the trunk. This issue often includes warning beeps.
This problem affects older models (2014-2018) due to aging parts. In 2015, Foresters, for example, liftgates frequently started to close shortly after reaching the fully open position, and some drivers have even reported minor injuries from unexpected closings. Colder temperatures also worsen the issue, as reduced gas pressure in the struts leads to less support.
The main causes are failing gas struts (or lift supports), which lose pressure over time. Defective motors or issues with the drive mechanism can also contribute, and malfunctions in the obstruction detection system may cause the liftgate to reverse direction due to false readings.
Replacing worn gas struts and ensuring the liftgate stays open usually solves the issue. If the motor or drive components are faulty, replacing them can prevent unexpected closings. Also, recalibrating the obstruction detection system may help avoid false triggers.
4. Unusual Noises While Operating the Liftgate
When the liftgate moves, a grinding, clicking, or buzzing noise indicates that something may be off mechanically. If not resolved, the noise can worsen and indicate underlying issues.
Such noise problems have been reported across multiple model years, particularly in vehicles with higher mileage. For instance, 2016 Forester owners often mention grinding noises that eventually lead to liftgate malfunctions. In the 2018 models, squeaking noises are commonly reported, especially in damp weather.
These sounds typically come from worn or damaged gears within the liftgate’s motor or actuator. Without sufficient lubrication, friction between moving parts can cause squeaking or buzzing. Loose or misaligned parts, such as hinges or bolts, may also be to blame.
Lubricating moving parts can help reduce friction and eliminate minor noises, and inspecting and replacing any worn gears, bearings, or motor parts may prevent further issues. Ensuring that hardware is tight and aligned can also resolve alignment-based noises.
5. Liftgate Stops Working After a Battery Replacement or Disconnection
After disconnecting or replacing the battery, some Forester owners have found that their liftgate no longer works and requires manual operation. This can be irritating if it was previously functioning well.
This problem affects models from 2014 to 2018. One 2015 Forester owner reported that after a battery change, the liftgate stopped working and produced error beeps.
This issue often arises because the liftgate control module may lose its memory settings when power is interrupted, resulting in lost calibration. Voltage surges during battery service can blow fuses, while software glitches may require system re-initialization.
Typically, reinitializing the liftgate by following a calibration procedure will restore function. Owners can check the manual for instructions on resetting the liftgate’s memory. Blown fuses should also be checked and replaced; in some cases, a software update from Subaru may be needed.
6. Hands-Free Liftgate Feature Malfunctions
The hands-free liftgate, introduced in higher trims from 2019 to 2023, allows owners to open the liftgate with a simple foot wave under the rear bumper. However, some users report inconsistency or complete failure of this feature.
For example, 2020 Forester owners have noted that the liftgate doesn’t respond reliably or requires multiple attempts. In 2021 models, some reported problems after installing trailer hitches or other accessories near the sensor area.
Possible causes include faulty or blocked sensors, software issues, or interference from nearby aftermarket accessories. Dirt or damage can also impede sensor functionality.
The solution often involves cleaning or adjusting sensors and, if necessary, replacing them. Dealers may also update the software to improve performance. Removing or repositioning aftermarket accessories blocking sensors may restore function.
7. Liftgate Fails to Lock or Unlock with Central Locking
Some Forester owners report the liftgate not locking or unlocking with the rest of the vehicle, which raises security concerns.
This issue has affected models from 2014 to 2018. For instance, a 2016 Forester owner noted that the liftgate often stayed unlocked even when the vehicle was locked.
This could stem from a faulty lock actuator, wiring damage, or problems with the Body Control Module (BCM).
Replacing the liftgate lock actuator or fixing wiring problems typically resolves the issue. Sometimes, reprogramming the BCM may help.
8. Water Leaks Causing Electrical Problems
Water leaking into the liftgate can cause various electrical issues, from operational malfunctions to dashboard warning lights.
This problem affects models from 2014 to 2018, with some 2015 Forester owners reporting corrosion in liftgate electrical connectors. Poor weatherstripping and clogged drainage can cause water damage.
Replacing damaged weatherstripping and clearing drainage channels usually prevents future leaks. Damaged electronics need repair or replacement, and realigning the liftgate can improve the seal.
9. Liftgate Warning Beeps or Error Messages
Warning beeps and error messages, particularly indicating an improperly closed liftgate, are common complaints that prevent locking and can drain the battery.
This problem has appeared in models from 2014 to 2018. One 2015 Forester owner mentioned that their liftgate seemed to be closed but triggered an error message that prevented locking. Faulty ajar sensors, misaligned latches, or software issues often cause these alerts.
Replacing sensors, adjusting the latch, and updating the control module software can help resolve these issues.
Final Thoughts
The Subaru Forester’s power liftgate is a convenient feature, but it can be annoying when problems arise. Knowing these common issues and how to resolve them can help restore proper operation.
If you’re experiencing any of these problems, consider consulting with a skilled Subaru technician to keep your liftgate—and your Forester—working smoothly.
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