If your Subaru Crosstrek USB port won’t connect your phone, flash drive or CarPlay/Android Auto, don’t worry — you’re far from alone, and there are reliable ways to diagnose and fix it.
If your Subaru Crosstrek USB port isn’t working, first check the cable, inspect ports for debris, restart the car or head unit, and try another device—most USB or AUX issues fix after a simple reset.
In this article you’ll learn what’s happening behind the scenes, how to test and fix the problem yourself, and how to keep it from happening again.
Why Subaru Crosstrek Owners Face USB Port Issues
Many Crosstrek owners find that the USB port in their vehicle seems to charge but won’t transfer data — or sometimes stops working entirely. In fact, on Subaru-specific forums, users report that the USB port may work intermittently, disconnect on its own, or simply not recognise devices.
The reason? A mix of design choices (some ports are “charge-only”), wiring/fuse issues, debris in the connector, and firmware/software quirks. Understanding the cause is the first step toward fixing it.
Common Symptoms You Might Notice
Here are the telltale signs your Crosstrek’s USB port is having trouble:
- The USB port accepts the cable and maybe charges your phone, but it won’t connect for CarPlay/Android Auto or recognise a USB flash drive.
- The device connects, then disconnects repeatedly without you unplugging it.
- The USB port seems completely unresponsive — nothing happens when you plug in.
- You see error messages like “USB device not supported” or the head unit grey-out of the USB input.
- Charging works but data transfer fails (or vice versa) — a sign the port may be wired for charging only.
Root Causes Behind the USB Port Failure
Below are the most common reasons why your Crosstrek’s USB port may not be working correctly.
1. Faulty or non-OEM USB cables
A surprising number of problems come down to the cable. As one forum user noted:
“I eliminated 99% of the trouble by using high quality USB cables … I never believed people when they told me cables were my problem, but now I’ve got religion.”
Cheap or damaged cables may charge fine but fail when it comes to data transfer. Always test with a known-good, data-capable cable.
2. Debris or oxidation inside the port
Dirt, moisture, or bent pins inside the USB receptacle can block the connector from making proper contact. According to a troubleshooting guide:
“Locate the USB port and check for dust particles or debris… it can block the connections…” Cleaning carefully (see the steps later) can solve this.
3. Blown fuse or loose wiring
Power to the USB ports is governed by one or more fuses and wiring harnesses behind the dash. If the fuse is blown or a connector is loose, the port may not work at all.
Interestingly, some users found the fuse fine but the cable connector behind the console had come undone.
4. Software or infotainment firmware issues
The head-unit in the Crosstrek controls data communication over the USB port (for CarPlay/AndroidAuto etc). Software glitches or outdated firmware can cause failures — including freezing or shutting off the USB connection unexpectedly.
5. USB port is “charge‐only” by design
Important: On some Crosstrek model years, not all USB ports are created equal. For example, one forum post pointed out:
“Only the two ports under the dash work with CarPlay. The ones in the centre console are for 2.1 A charging only.”
If you’re plugging into a “charge‐only” port but expecting data communication (CarPlay/AndroidAuto) you’ll get “not working” symptoms.
6. Damaged USB module or head-unit issue
If all the above fail, the hardware itself (USB module, port assembly, or infotainment head-unit) may be at fault. Replacement may be required by a technician.
Step-by-Step Troubleshooting Guide
Here’s a systematic process to fix the issue yourself before heading to the dealer.
Step 1 — Inspect and replace your USB cable
Start simple: try a different cable (ideally OEM or high-quality brand). If connecting fails or disconnects, suspect the cable.
- Plug into another USB device (e.g., laptop/charger) to test the cable.
- Ensure the cable supports data (not just charging).
- For CarPlay/AndroidAuto, use certified cables when possible.
Step 2 — Clean the USB port safely
Turn off the engine, remove the key, ensure the vehicle is off. Then:
- Use compressed air or a soft brush to blow out dust.
- Avoid inserting anything metallic into the port (risk of damaging pins).
- After cleaning, plug in again and test.
Step 3 — Check which port supports data vs charging
Refer to your owner’s manual or visually inspect the port symbols. Many Crosstreks:
- The forward USB ports (main console) support data (CarPlay/AndroidAuto).
- The rear or armrest ports may be charge‐only.
If you’re using a charge-only port for data, you’ll experience the “USB port not working” symptom. Support forums confirm this.
Step 4 — Verify fuse and wiring integrity
Locate the fuse box (under DASH or engine bay depending on year).
- Find the fuse labelled for “Audio/Nav”, “USB Power”, “Accessory”.
- If blown, replace with same amperage.
- If fuse okay, check the wiring/connectors behind the console (requires panel removal). One forum post:
“The plug that goes to the lower USB ports came loose. It caused it to work intermittently until it finally stopped completely.”
If you’re not comfortable removing trim, skip to step 6.
Step 5 — Update the infotainment software / reset the system
Since software issues often cause USB failures:
- Check if your head unit has a software update available (via dealer or USB update file).
- To reset: Many users hold the volume/power knob on the head unit until it restarts. This can temporarily fix glitchy USB issues.
- After update, test the USB port again for both charging and data.
Step 6 — Seek professional assistance
If you’ve done all the above and the port still fails:
- The USB port module may need replacement.
- The head unit may be failing.
- If the car is under warranty, mention the known forum issues (for example, forums show many 2020–2022 Crosstreks with USB port failures) to dealership.
Preventing Future USB Port Problems
To avoid repeating the issue:
- Use high-quality cables and avoid constantly swapping/plugging/unplugging roughly.
- Keep the port covered when not in use; avoid moisture or debris ingress.
- Update the infotainment system when the manufacturer issues updates (OEM software often addresses USB/CarPlay instability).
- Know your port: Understand which port supports data vs charging so you don’t mis-use them.
- Avoid high-draw aftermarket accessories plugged into the same circuit (some users noted wireless chargers interfering).
Alternative Solutions
If the in-car USB port remains unreliable, consider these alternatives:
- Wireless CarPlay/Android Auto adapters: These plug into the USB data port but transfer communications over WiFi/Bluetooth. They can circumvent a flaky USB port—though they may still rely on that port for data power.
- Bluetooth or AUX input: For audio only (no CarPlay/AndroidAuto), you can connect via Bluetooth or your AUX line if available.
- Aftermarket infotainment units: For some users, replacing the head-unit entirely (with one that has more stable USB/data ports) was the long-term fix.
Subaru Crosstrek USB Port Not Working 2022
If your 2022 Subaru Crosstrek USB port stops working, check the cable first. Try another device or cable, restart the car, and clean the port gently. Sometimes, resetting the infotainment system can quickly fix the USB connection issue.
Subaru Crosstrek USB Port Not Working 2021
In the 2021 Crosstrek, USB problems often come from bad cables or a simple system glitch. Turn off the car completely, unplug everything, and restart it. If it still doesn’t connect, clean the port or reset the radio screen.
2018 Subaru Crosstrek USB Port Not Working
For 2018 models, the USB port might charge but not connect to CarPlay or Android Auto. Try another cable, check for dirt inside, and restart the head unit. A quick system reset usually brings the port back to life.
Subaru Crosstrek USB Port Location
Most Subaru Crosstrek models have two USB ports in the center console area below the dashboard, near the gear shifter. Some trims also include extra charge-only ports in the armrest or back seat for passengers’ convenience.
2016 Subaru Crosstrek USB Port Not Working
If your 2016 Crosstrek’s USB ports stopped working, start by cleaning the port and checking the fuse. Use a different cable or device to test. Restart the engine or head unit—many owners say this simple step restores function.
Subaru USB Port Not Working
A Subaru USB port may fail due to dirt, loose wiring, or an old cable. Always check the port and cable first. Restart your car’s system; if it still fails, update the infotainment software or visit a dealer.
Subaru USB Port Replacement
If cleaning and resets don’t work, your Subaru’s USB port may need replacement. A technician can replace the port module inside the center console. It’s a quick job and often covered by warranty if the car is still new.
FAQs
How do you reset the USB on a Subaru?
Turn off the car, restart the engine, and reboot the infotainment system. This simple reset often restores your Subaru’s USB function.
How do I fix an unresponsive USB port?
Check the cable, clean the port gently, restart your device or car, and try another cable to restore USB connection.
Why did my USB port stop working in my car?
It may stop due to dirt, faulty cables, blown fuse, or software glitches. Cleaning and restarting often fix the issue.
How do I reset my USB ports in my car?
Turn off your car completely, wait a minute, and restart it. Rebooting the system usually resets and restores USB ports.
How to tell if a USB port is damaged?
If devices don’t charge or connect, the port feels loose, or pins look bent, it’s likely physically damaged and needs repair.
How do I reactivate my USB ports?
Unplug all cables, restart your car or device, and plug back in. Cleaning and rebooting often reactivate frozen USB ports.
How to reset Subaru Crosstrek CarPlay?
Unplug your phone, restart the Crosstrek’s infotainment system, and reconnect using an official cable. Rebooting usually fixes CarPlay connection issues.
How much does it cost to fix a USB port in a car?
Repairing a car USB port usually costs $80–$200, depending on labor and parts. Warranty may cover it for newer cars.
How to update Subaru with USB?
Download Subaru’s update file, copy it to a USB drive, insert it into the car’s port, and follow on-screen instructions.
Is there a fuse for the USB port in my car?
Yes, most cars have a specific fuse controlling USB power. If the port stops working, check and replace the blown fuse.
Conclusion
Dealing with a Subaru Crosstrek USB port not working can be frustrating, especially when you rely on it for CarPlay, Android Auto, or charging. Luckily, most problems are simple — a bad cable, dirty port, or a quick infotainment reset often solves it.
If you’ve followed the steps in this guide — from checking cables and cleaning the ports to updating your head unit — your Crosstrek’s USB connection should be working smoothly again. And if it’s still unresponsive, a visit to your Subaru dealer can pinpoint deeper hardware or fuse issues.
To prevent future problems, always use high-quality cables, keep your ports clean, and perform regular software updates. A little care goes a long way in keeping your Crosstrek’s tech features reliable and ready for every drive.