How To Fix Your Bose Headphones’ Problems

Simply restarting your AirPods should fix most problems. Keep reading to find out more.

Niya Andrew • August 23, 2023 • 6 mins read

Person comfortable wearing Bose QuietComfort 35 II

There’s a reason why the Bose QuietComfort 35 II headphones haven’t lost any popularity years after their launch. It competes with the top noise-canceling headphones on the market with its exceptional sound quality, smart assistant integration, and precision. The Bose headphones have a lot of functions, so learning how to use them may take some time. 

We hope this comprehensive guide helps you get the most out of your Bose QuietComfort 35 II headphones.

Every Original Bose product has a unique Serial Number

The most obvious way to fix any problem with your Bose QuietComfort 35 II headphones is to identify the serial number of your set and contact the Bose customer support team immediately. 

Where can the serial or product number be found on Bose QuietComfort 35 II headphones? Inside the right ear cup is where you’ll find the serial number for your active noise canceling (ANC) headphones. It can be read by carefully removing the scrim, a mesh coating within the ear cup designed to shield the internal components, starting at the top edge. Avoid putting any pressure on the driver’s parts, or you risk damaging them.

Problem#01: Connection Issues With Bose QuietComfort 35 II To Your Device

It’s pervasive for wireless headphones to suddenly lose their Bluetooth connection for different reasons. Sometimes, you must turn off your headphones and Bluetooth on your device for at least 10-15 seconds and then try reconnecting again. 

Follow these steps if you have a pair of Bose QuietComfort 35 II headphones.

Bose QuietComfort 35 II charging via its USB cable

First, ensure the headphones’ USB cord and audio wire are unplugged. If the problem persists after that, go into the Bluetooth settings on your mobile device, tablet, or computer and turn off Bluetooth for 15 seconds. If you’re having trouble getting the headphones to associate with your device, try going into the Bluetooth settings, erasing them from the list of remembered devices, and linking them again as though they were brand new.

Problem#02: What to do if Bose QuietComfort 35 II does not turn on?

When a Bose QuietComfort 35 series II headset does not switch back on, it may be due to some problems, including but not limited to a broken USB cable or charger, old firmware, or dead batteries.

So, there are a few ways to turn on your Bose QuietComfort 35 II headphones.

#1 Try Installing Any Latest Firmware Version For QuietComfort 35 II

Outdated firmware can cause minor issues on the product; the way to fix it is to update to the latest version. Make sure to check for the latest firmware version. Updates fix bugs that may have caused it not to turn on and ensure that the product has the latest features and enhancements.

Bose Companion App is available for free download on Play Store & App Store

The Bose Connect App is free in the App Store for iOS devices and the Google Play Store for Android devices. We recommend downloading and installing this app if you own a Bose product. Launch the program after downloading, and then follow the prompts to check for and apply any updates.

If the problem persists after checking for and installing any updates, consider other options.

#2 Change Your USB Cable/Charger

When a Bose product fails to power on after being charged, it may be a case of a malfunctioning USB cable or charger. Therefore, check to see if your cable and charger are defective. To verify this, try charging your Bose headphones with a separate USB cable and charger, and then see if your QuietComfort 35 Series II is charging.

#3 Check Your Battery Level

Another common reason your Bose QuietComfort 35 II headphones won’t turn on may be because your battery level’s all drained out. So check for illuminating light indicating your set’s battery level. 

Checking Battery Bose QuietComfort 35 II

If the light goes green (Solid), it indicates an hour or more of battery life is left. Amber (Solid) light indicates that less than an hour of battery life remains. Lastly, if it’s a blinking red light, you must charge your headset immediately. 

#4 Reset Your Bose QuietComfort 35 II settings

When you reset your headset, it returns to its factory settings. All saved preferences will be removed as well. These adjustments address minimal problems with the Bose product.

For this, you simply need to follow these steps in the same order:

Power Button to turn on/off the Bose QuietComfort 35 II

Turn Off the headphones > After 30 seconds, connect the headset to a wall outlet > Wait 5 seconds, and unplug the headphones from the outlet > Turn on the headphones again. 

Problem#03: Unable To Adjust Volume On My Bose QuietComfort 35 II

It may be that your Bose QuietComfort 35 II headphones are hung up on a specific volume level and won’t adjust when you try to move them up or down. Either this, or maybe the headphones are not producing any sound, or the sound produced is distorted. Let’s discuss all the problems in detail:

Volume buttons on the side of the earcups to conveniently adjust levels

If you’re facing the first problem (stuck on one volume) with your Bose QuietComfort 35 II, there is a high chance that the control buttons for adjusting the volume are either broken or not working. Either way, try getting your volume button replaced.

But if you don’t hear any sound from your Bose QuietComfort 35 II, we can try a few troubleshooting techniques.

Ensure that the power button on the headphones is turned on and illuminated by the green light. Make sure the quality of your wireless or wired connection is good. The indicator light next to the power button should glow blue when Bluetooth is on. Turn the volume up to eleven. If none of those work, the problem is likely with the speakers, and you’ll need to get a new pair.

Lastly, if your headphones sound distorted and the sound keeps breaking up, ensure your wireless connection is strong. The issue could be the headphones’ speakers. The headphones’ earpieces will need to be replaced.

Problem#04 The headphones won’t connect to the media player mechanically.

Bose Headphone connect to the media player mechanically

The Bose QuietComfort 35 II allows simultaneous pairing with two devices and automatically switches to the source device currently playing audio. Even when no audio is played, the headphones have been known to switch to the wrong device. The Bluetooth on/off switch is positioned on the right ear cup and lets you pick your device manually.

Problem#05 Bluetooth Wireless Connection Keeps Dropping

Few things are more annoying than audio interruptions and frequent dropouts, yet this is the reality of using older Bluetooth technology. First, the Bose QuietComfort 35 II only supports the lower-quality AAC Bluetooth codec, which may cause stuttering if you use the headphones with an Android handset. The issue is not with AAC but with how Android encodes the codec, which is inefficient and inconsistent and causes delays and connection problems.

Bose QuietComfort 35 II wireless Bluetooth headphones

You can remedy this by accessing the Developer Options on your Android device and setting the default codec to SBC. This should fix the issue, but the audio quality will suffer. Given that AAC on Android devices often produces erratic audio, this isn’t much of a sacrifice.

Problem#06 What To Do If My Earpads Are Damaged

Replaceable faux leather earpads of Bose QuietComfort 35 II

The foam padding on the interior may start to separate from the faux leather coating after using it for around a year or so, as reported by many users. If the cushions don’t fit snugly over your ears, the ANC won’t work either, and the sound quality will suffer. You can find cheaper replacements for the Bose ear pads on the market, but if you want the same level of noise isolation, we suggest you spring for the genuine article.

You can make your earpads last longer by following some routine care steps. This includes cleaning your ear pads after each use, which can keep them in good condition for extended periods. Long-term use might cause the ear pads to become soaked with sweat, which is bad for the material. Wipe the exterior of your Bose QuietComfort 35 II headphones with a gentle, dry cloth to keep them looking new. Sweat can be removed from the ear pads using disinfectant wipes or a slightly moist cloth; just be careful to remove them from the headset first so as not to damage the electronics, and let them dry completely before putting them away.

Problem#07 The Battery Charge of My Bose QuietComfort 35 II keeps draining immediately after charging

Bose QuietComfort 35 II has an impressive battery life, but if your set still runs out of battery right after you charge it, you probably have a battery problem. There are a couple of precautions and remedies to move past your headphone battery problem. 

#1 Charge Your Bose QuietComfort 35 II After turning them off.

Bose QuietComfort 35 II headphones won’t charge while they’re on. So, you must turn off your pair before plugging in the charge.

#2 It’s Time To Change Your Cable

They eventually die out, just like every other lithium-ion battery. If your headphones’ runtime had decreased drastically from when you first bought them, or if they don’t turn on at all, the battery may need to be replaced.

Problem#08 Why is the ANC in My Bose QuietComfort 35 II not working? 

If you’re Bose QuietComfort 35 II cannot keep the background noises outside your headphones, its ANC is probably not working as it should. There may be many reasons for such a scenario. Some common reasons may be:

Turn on ANC mode with the control button on the side of the earcup

#1Glasses/headbands that are interrupting their ANC performance

The headphones’ noise-canceling feature functions best when they make a tight barrier around your ears; some accessories can break that seal. Remove your hat or accessories like glasses or jewelry for a better seal.

#2 Try To Reset Your Pair Before Using Again

The headphones may need to be reset. To charge the product through USB, turn it off, wait 30 seconds, plug it in, wait 5 seconds, and then unplug it; wait 1 minute before turning the headphones on.

#3 Re-check ANC Settings On The Headphones

Turn on ANC mode with the control button on the side of the earcup

The Bose Connect app includes a “noise cancellation” mode with customizable sensitivity. Make sure the volume on your headphones is set to the appropriate level; options include “high,” “low,” and “off.”

Wrapping it Up!

You can now use your Bose QuietComfort 35 II headset without worrying about further pairing issues. The money you spend on these headphones may finally pay off.

The headphones’ noise isolation and high-quality sound will help you unwind after a long day. If you’d like to explore your options check out our expertly curated list of Best Noise Cancelling Headphones 2024, or Best Wireless Headphones 2024


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