2020 Subaru Outback Power Tailgate Not Working: Diagnosis & Fixes

Experiencing issues with your 2020 Subaru Outback's power tailgate can be incredibly frustrating. What was once a convenient feature, especially for busy families or those with hands full of groceries, can quickly become a nuisance when it refuses to open, close, or latch properly. This guide will help 2020 Outback owners understand the common problems, diagnose the root causes, and explore potential solutions when their 2020 Subaru Outback power tailgate not working as expected.

The power tailgate system in your 2020 Subaru Outback is a complex assembly of motors, sensors, wiring, and a dedicated control module. When any part of this system malfunctions, it can lead to a range of issues, from minor annoyances to complete failure, potentially leaving your cargo area exposed or inaccessible. Understanding the typical failure points and how to approach diagnosis is key to a successful repair.

What drivers notice on this 2020 Subaru Outback

Drivers often first notice a problem when the tailgate either doesn't respond to the button press, stops midway through its operation, or makes unusual noises. This can happen whether you're trying to open it from the driver's seat button, the key fob, or the button on the tailgate itself. The convenience of a power liftgate quickly turns into a manual struggle, sometimes leaving the cargo area exposed or difficult to access. For many Outback owners, the power tailgate is a heavily used feature, and its failure can significantly impact the vehicle's utility, especially when loading bulky items or dealing with inclement weather. You might find yourself having to physically force the heavy tailgate open or closed, or even worse, it might refuse to latch, triggering a dashboard warning light and preventing you from locking your vehicle.

At a glance: difficulty, repair cost, and diagnostic workflow

• Difficulty Rating: 6/10 — Moderate
• Common Symptoms: Tailgate fails to open completely: It might unlatch but not lift, or lift only a few inches before stopping. This often ; Tailgate fails to close completely: It may lower but not latch securely, or stop partway down, leaving the hatch ajar. T; Grinding or clicking noises: Unusual mechanical sounds during opening or closing, indicating a motor or gear issue withi; Intermittent operation: The tailgate works sometimes but not others, or only after several attempts. This can be a sign
• Estimated Repair Cost: $100–$900 (parts + typical shop labor)
• OEM Tooling Required: Standard OBD-II scanner and hand tools

Diagnostic workflow:

1. Confirm the symptom on your vehicle.
2. Scan for stored or pending codes with an OBD-II tool.
3. Inspect the most common causes in this guide (visual checks first).
4. Run verification tests before replacing parts.
5. Repair, clear codes, and verify on a test drive.

Symptoms and warning signs

When your 2020 Subaru Outback's power tailgate begins to act up, you might observe several distinct symptoms, which can often point towards the underlying cause:

• Tailgate fails to open completely: It might unlatch but not lift, or lift only a few inches before stopping. This often suggests a motor or strut issue, or a binding mechanism.
• Tailgate fails to close completely: It may lower but not latch securely, or stop partway down, leaving the hatch ajar. This could be a latch problem, sensor issue, or motor weakness.
• Grinding or clicking noises: Unusual mechanical sounds during opening or closing, indicating a motor or gear issue within the power strut assembly. This is a strong indicator of mechanical wear.
• Intermittent operation: The tailgate works sometimes but not others, or only after several attempts. This can be a sign of a failing sensor, loose wiring, or an overheating motor.
• Slow or sluggish movement: The tailgate operates much slower than usual, suggesting a weak motor, failing gas struts, or increased friction in the hinges.
• No response: Pressing any of the open/close buttons yields no action from the tailgate. This often points to a blown fuse, a complete motor failure, or a control module issue.
• Tailgate warning light: A dashboard indicator might illuminate, signaling an issue with the hatch's closure or the system itself.
• Manual operation difficulty: The tailgate feels unusually heavy or stiff when attempting to open or close it manually, even with the power assist disengaged, which could indicate failing gas struts or mechanical binding.

How to verify and confirm the issue

Confirming the exact nature of your 2020 Subaru Outback's power tailgate problem involves a few practical checks. A systematic approach will help narrow down the potential causes and prevent unnecessary repairs:

• Test all activation methods: Try opening and closing the tailgate using the interior button, the key fob, and the exterior tailgate button. Note if the issue is consistent across all methods. If it works with one method but not another, it might indicate a specific button or wiring issue.
• Listen for noises: Pay close attention to any grinding, clicking, or whirring sounds when attempting to operate the tailgate. A grinding noise often points to a motor or gear issue within the power strut. A clicking noise could be the latch trying to engage or a relay activating.
• Visual inspection: Carefully examine the tailgate area. Look for any obstructions in the path of the tailgate, damaged wiring near the hinges, or bent/damaged struts. Check the latch mechanism for debris or damage. Ensure nothing is physically blocking the tailgate's movement.
• Manual operation test: With the power assist off (or if it's not working), try to manually open and close the tailgate. Does it move smoothly? Does it feel unusually heavy or bind at any point? This can differentiate between a mechanical obstruction and an electrical fault.
• Check fuses: Locate the fuse box (usually under the hood or in the passenger footwell) and check the fuse specifically for the power liftgate or body control module. A blown fuse can cause complete non-operation. Consult your owner's manual for the exact fuse location and amperage.
• Scan for diagnostic trouble codes (DTCs): While not an OBD-II engine code in the traditional sense, a professional-grade scan tool can sometimes communicate with the Body Control Module (BCM) or Liftgate Control Module. These modules can store specific codes related to tailgate motor faults, sensor issues, or communication problems. This can provide valuable diagnostic direction that basic OBD-II scanners cannot.
• Inspect gas struts (lift supports): Even with a power tailgate, gas struts assist in lifting and holding the tailgate. If they are weak, the tailgate might sag, feel unusually heavy, or the motor might struggle and eventually fail prematurely. Look for signs of fluid leaks or rust on the strut body.

Common causes (most likely first)

Several factors can contribute to a 2020 Subaru Outback power tailgate not working correctly, ranging from simple electrical issues to mechanical failures:

• Failed power liftgate motor assembly: This is a very common culprit. Over time, the electric motor and its internal gears, which drive the tailgate's movement, can wear out or strip, leading to grinding noises, intermittent operation, or complete failure. The motor is often integrated into one or both liftgate struts.
• Faulty liftgate struts/actuators: The struts on power tailgates often contain the motor, gear assembly, and sometimes position sensors. A failure in these integrated units, either mechanically or electrically, can prevent proper opening or closing. These are complex units and are typically replaced as a whole.
• Damaged wiring harness: The wiring that runs through the tailgate hinges is subjected to constant flexing during opening and closing cycles. This can cause wires to fray, pinch, or break, interrupting power or signal to the motor, sensors, or latch mechanism.
• Malfunctioning latch mechanism: If the latch itself is faulty, either mechanically jammed or electrically failing, it may not engage properly, causing the tailgate to remain ajar or fail to release when activated. Debris or corrosion can also impede its function.
• Faulty position sensors: The tailgate relies on sensors (e.g., hall effect sensors) to know its current position (fully open, fully closed, or any point in between). If these sensors fail, the control module won't know when to stop or start movement, leading to erratic behavior or complete shutdown.
• Liftgate Control Module (LCM) issues: The dedicated control module for the tailgate can sometimes fail due to internal circuit board issues or software glitches, leading to erratic behavior or complete non-operation. This is less common but can happen and often requires professional diagnosis and replacement.
• Blown fuse: A simple, yet often overlooked, cause for complete non-operation. A blown fuse indicates an overcurrent, which could be a symptom of a larger electrical problem, but sometimes it's just a random fault.
• Obstruction or damage: Physical damage to the tailgate, hinges, or surrounding bodywork can impede movement, causing the system to stop as a safety measure. Always rule out simple obstructions first.

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Step-by-step diagnosis and fixes

Diagnosing and fixing your 2020 Subaru Outback's power tailgate requires a systematic approach, starting with the simplest checks and progressing to more complex ones. Always prioritize safety when working around the tailgate, as it can be heavy and has powerful components.

1. Check for obstructions: Before anything else, ensure nothing is blocking the tailgate's path or caught in the latch mechanism. Clear any debris, ice, or snow that might be preventing full movement or proper latching.
2. Inspect fuses: Locate the relevant fuse for the power liftgate (consult your owner's manual for the exact location, usually in the engine bay or passenger footwell fuse box) and check for a blown fuse. A blown fuse will have a broken wire inside. Replace if necessary with a fuse of the correct amperage. If the new fuse blows immediately, there's a short circuit that needs professional attention.
3. Perform a system reset (if applicable): For minor electronic glitches, a power tailgate system reset can sometimes resolve the issue. This is typically done by disconnecting the vehicle's negative battery terminal for 15-30 minutes. Always ensure your vehicle is off and follow proper battery disconnection procedures. Reconnect and test the tailgate.
4. Listen and observe: Have someone operate the tailgate while you listen closely to the motor and observe its movement. Note any grinding, clicking, or areas where it binds. This auditory feedback is crucial for pinpointing mechanical issues.
5. Inspect wiring: Carefully examine the wiring harness that runs into the tailgate, especially around the hinges where wires are prone to bending and fatigue. Look for any visible signs of damage, fraying, or pinches. If you find damaged wires, they will need to be repaired with appropriate automotive-grade connectors and heat shrink tubing. For more detailed electrical troubleshooting, you can browse our collection of All repair guides.
6. Test the struts/actuators: If you hear the motor but the tailgate doesn't move, or moves sluggishly, the integrated power struts (which often house the motor) are a likely suspect. If the tailgate feels very heavy manually, the gas struts might be weak and need replacement, even if the power system is technically working.
7. Check the latch: Inspect the latch mechanism on the tailgate and the striker on the vehicle body for damage, misalignment, or debris. Ensure it's clean and lubricated. Sometimes, a simple adjustment can resolve latching issues.
8. Scan for BCM codes: If you have access to a professional scan tool, check the Body Control Module (BCM) or Liftgate Control Module for any stored diagnostic trouble codes. These codes can pinpoint specific sensor, motor circuit, or communication issues that are not visible to the naked eye. This step is often essential for complex electrical faults.

Repair options and cost factors

Repairing a faulty power tailgate on your 2020 Subaru Outback can range from simple DIY fixes to more involved professional repairs, with costs varying significantly based on the component and labor:

• Fuse replacement: A very inexpensive and easy DIY fix, typically costing only a few dollars for a new fuse. This is the first thing to check.
• Wiring repair: Depending on the extent of the damage, this can be a DIY job with basic tools (wire strippers, crimpers, heat gun) or require a professional for complex harness repairs, especially if multiple wires are affected or the damage is in a hard-to-reach area.
• Liftgate motor/strut replacement: This is often the most common and significant repair. The entire power strut assembly (which includes the motor) usually needs to be replaced. This can be a moderate to advanced DIY task for those comfortable working with automotive components, but often requires specific tools, careful alignment, and sometimes programming after installation. Parts alone can range from a few hundred to over a thousand dollars per strut.
• Latch mechanism replacement: Replacing the latch assembly is generally straightforward but requires removing interior trim panels. Parts are typically less expensive than a full power strut.
• Control module replacement: This is typically a professional job as new modules often require programming to the vehicle's system using specialized diagnostic equipment. This is usually the most expensive repair due to part cost and specialized labor.

While we don't provide specific pricing, consider that parts for a power liftgate motor/strut can vary significantly based on OEM vs. aftermarket, and labor costs at a dealership or independent shop will add to the total. Always get a detailed quote before authorizing any major repairs.

When to see a professional

While some basic troubleshooting and repairs can be done at home, there are times when consulting a professional automotive technician is highly recommended, especially for safety and complex systems:

• Complex electrical issues: If diagnosis points to wiring problems beyond simple visible damage, or issues with the control module, professional expertise is crucial. These systems are integrated with other vehicle electronics.
• Safety concerns: The power tailgate system involves heavy components, powerful motors, and potentially spring-loaded struts. It can be dangerous if not handled correctly. If you're unsure about any step, especially when dealing with heavy tailgate components, seek professional help.
• Lack of specialized tools: Certain diagnostic steps or component replacements may require specific tools or advanced scan equipment that most DIYers don't possess, such as specialized trim removal tools or factory-level diagnostic software.
• Intermittent problems: These can be the hardest to diagnose and often require advanced diagnostic techniques and experience to catch the fault when it occurs.
• After attempting basic fixes without success: If you've checked fuses, wiring, and performed basic resets without resolving the issue, it's time for an expert diagnosis to prevent further damage or wasted effort.

Frequently asked questions

Can I manually operate my 2020 Outback's power tailgate if it's not working?

Yes, most 2020 Subaru Outbacks with a power tailgate have a manual override function. You may need to press and hold the tailgate button for a few seconds to disengage the power assist, or simply pull it open/closed with more force than usual. Always check your owner's manual for the specific procedure to avoid damage to the motor or gears, as forcing it incorrectly can exacerbate the problem.

Is there a recall for 2020 Subaru Outback power tailgate issues?

While specific recalls can vary, it's always a good idea to check the official Subaru recall database or contact your local Subaru dealership with your VIN. They can inform you of any active recalls or Technical Service Bulletins (TSBs) related to the power tailgate system that might apply to your 2020 Outback. TSBs are common manufacturer communications about known issues and recommended repairs, even if not a full safety recall. You can also explore general information about your vehicle and other models at Browse vehicles.

How long should a Subaru power tailgate motor last?

The lifespan of a power tailgate motor can vary widely based on usage, environmental factors, and manufacturing quality, but they are generally designed to last many years and thousands of cycles. Issues typically arise after several years of regular use, often due to wear and tear on the motor, gears, or associated sensors. Early failure can sometimes point to a manufacturing defect or an underlying electrical problem, such as a constant draw or excessive strain due to binding. Regular lubrication of hinges and ensuring no obstructions can help prolong its life.

Sources and further reading

Consult your 2020 Subaru Outback owner's manual for specific fuse locations, troubleshooting steps, and safety warnings related to the power tailgate system. Online Subaru forums and technical service bulletins (TSBs) can also provide additional insights into common issues specific to your model year. For a broader range of automotive repair topics, feel free to visit our main repair guides page.

This information is for educational purposes only and is not a substitute for OEM service procedures; always use a qualified technician for safety-critical work.

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