Logitech MX Master Scroll Wheel FIX

My scroll wheel got stuck between ratcheting and free-wheeling modes after only about 5 days of use.

So I took it apart and found the problem. The fix is easy! More Info ↴↴

Update (6/16/16): The issue came back after about 4 weeks. I fixed it again the same way. If it starts happening more often I'll try using loc-tite or something.

[MatchboxRiot]

7 years later and you're still saving lives! Wheel ratchet died halfway through work, watched your video, had my mouse apart, fixed and back together in 5 minutes. You, my good sir, are an absolute legend, thank you.

[rokutsubasa]

After using this mouse for about...five years? The scroll wheel suddenly couldn't switch between the two scroll modes. Thank you for this tutorial!! Saved my mouse and money!!

[perfect.stealth]

You definately set the standards of good tutorial videos. Good graphic, no shitty music, nice explanation about everything (how you do it and why). Thank you for helping me get my mouse back.

A little sidenote though, the mouse MUST BE powered on for the switch function to work! I didnt know this, so i thought i did something wrong for about 20 minutes (thought the button was positioned wrong) untill i tried powering it on while testing - that worked..

Anyway, big thumbs up for your video.

[Olhar.Internacional]

As soon as I clicked on this video, my mouse started working normally again... it`s magic!

[mylesrobey]

Thanks so much. Based on you showing where this mechanism is, I was able to correct the issue without having to open the mouse at all, I just put some firm pressure on that area, and firmly pressed the button in the middle of the mouse in which is further back towards the palm from the school wheel. This re-engaged the mechanism and it's now back working as it did before. Wouldn't have been able to figure that out without this video, so thanks for taking the time.

[BenOrmstad]

First of all: Perfect tutorial with great quality.
Second: I'm probably a bit dense, but was about to open this mouse up to fix the stuck free-wheeling mode. Then I "accidentally" clicked the rectangular button right above the scroll wheel, and it fixed it. Turns out the whole point of that button is to disengage the ratcheting functionality for those who wanna leave it in free-wheel mode, lol.

[XTJ]

8 years after your video I fixed an MX Master 2S in minutes thanks to this. Thank you so much!

[jamiesurgener]

Thank you for your video, it was well done. I think the issue many people may have is the fact that this mouse doesn't come with written instructions as to what that square top button is for. That was the case for me, once I saw you pressing a mysterious button off camera, I understood what that button was for and was able to figure out why my scroll wheel lost its resistance.

[toodlum]

Excellent description and fix! Actually, one of the best and clearest YouTube "how to's" I've seen. Great camera work, too! Thanks.

[johnadams]

I had the identical problem and was searching to a solution when I fell onto your nice video. I have an easier solution I figured out. Instead of disassembling the mouse, turn it upside down on a soft but firm surface (I use my mouse pad) and lightly but firmly knock it onto the pad. It takes only a few knocks to reengage the ratch mechanism.
For such a premium priced mouse, Logitech SHOULD design and build this mechanism at a higher quality level so that it is reliable.

[alexkalopsia]

I got Logitech to change my mouse because of this problem, and after one week with the new one I got the same exact problem :( Can't believe they actually released it... thanks for the video, I'll give it a try!

[epicurusopinionem]

if you recently bought this mouse and have this trouble then try the ratchet/freewheel toggle button (small black) located right behind the wheel. It works for me to get me out of the freewheeling mode. I can't confirm if the latest firmware version helps but it wouldn't hurt to try that as well.

[timelapsega]

Before you take your MX Master apart make sure to hit the square button in front of the wheel to toggle between notched and free spinning modes. I thought mine was stuck in free spin but really i had accidentally toggled it to that mode and since I had just gotten the mouse i wasnt aware thats what the button did.

[DasNichts]

this is what a tutorial video should be. showing how to solve the issue while explaining how it occured. no EDM intros, no asking to buy tool kits.

BTW, I didn't have any tools to open the mouse up and so the way I solved this exact same problem is by percussive maintenance. I just banged it right-side-up against my mousepad until the function worked again. Your video showed me that this might work. Don't recommend doing it the same way though, might result in the usual problems that arise from percussive maintenance: breaking it even further.

[Yashodhara]

Apparently I Did Not Retain This Information From 3 Years Ago. Thanx Again Renck!!!

3 years ago
U R The Real I Was Just About 2 Click Amazon & Thought Let me Check Youtube 1st.

[ErinBarry]

Wanted to share with others that I thought my MX was having this same problem. However, I realized that the square button on top of the MX above the flywheel is actually an engage/disengage button for the mechanism described in this (excellent) video. Press it once, and it fully disengages the ratcheting feature for full free-wheeling mode regardless of flywheel speed. Press it again and it allows you to switch between the two as normal. I had no idea until I thought I "broke" the ratcheting function of my mouse that I could actually toggle between the two!

[Rafayak]

this video is just as useful as the day it was uploaded. Thanks!

[AdeErrandeC]

You are truly a life saver. I almost given up and bought a new one. Found out had similar problems at the same spot. Not exactly the same. The rotaty was a bit skewed, only need to rotate it, didnt have to press or anything.

[bobbybanjo]

Wow! This worked perfectly. I only bought the mouse a month ago (April '16) and within a couple of weeks I had a feeling the ratchet was going / had gone. It wasn't until I tried a co-workers mouse and realised how broken mine was. I was about to return it, found out I'm on day 31 of purchasing it so Amazon won't accept! Hunted around to look in forums, with everyone complaining about it, with no fix. This video has saved me writing a very angry e-mail to Logitech :) So strange that it's such a common issue though. I had a MX Performance for about 6 years with no issues! Thankyou for the great video :)

[maximsacher]

If you dont care about the free scrolling then use this tip:
Go to logitech options on your pc --> disable smartshift. This way the dc motor doesnt have to switch between modes regulary so it wont go broken again.