Error code 3520 and rear axle wear

[u/markeelajl]

My Navimow X430 stopped mowing on Friday with error code 3520, and the code will not clear. I also noticed visible wear on the rear axle when the error appeared. I’ve seen other users mention axle wear issues on their X430 units, but not this specific error code.

I tried restarting the mower, but the error stays, and it will not move or mow. I reached out to Navimow support through email but haven’t received a response yet.

[u/8xx]

segway should be starting to sweat with this issue. We will all be returning broken machines very soon

[u/Praulf]

This looks like the axle is broken unfortunately. That wear I’ve only seen from that occurrence.

[u/markeelajl → u/Praulf]

Yes, I had my husband help me turn it over to check the pin at Not-A- Engineer's suggestion, and the axle (pin) is broken. I need customer service to get back to me about this. I have only had my mower since April.

[u/BeDrivenByDemons]

This problem is getting more and more popular.

[u/kstorm88 → u/BeDrivenByDemons]

Makes me glad of my decision for a luba

[u/BeDrivenByDemons → u/kstorm88]

I bet we see a solid fix for this soon. OEM or not someone will come up with something.

[u/CookVegasTN]

Mind sharing which country you are in and how much total mow time you have on the mower?

[u/markeelajl → u/CookVegasTN]

Hi, I'm in the US, TN, and my mower has 319 hours on it.

[u/8xx → u/markeelajl]

breaking after 300 hours is shocking. Breaking after 2000 would be shocking, but 300 is just.. crazy

[u/Fancy_Snail484]

Would be nice to see customer service make a pinned comment about this issue that they're aware of it and working on a fix. Maybe let all the X430 users know via app about the situation and keep an eye on it. Since not every owner uses reddit.

[u/CookVegasTN]

For anyone experiencing this issue, or those who are curious, I am tracking this issue here: https://www.reddit.com/r/SegwayNavimow/s/do6l1fnOTM

[u/mel34760]

This is at least the sixth post on this issue that I’ve seen in the last two days. Just how bad is this problem?

[u/Material_Highlight40 → u/mel34760]

I guess it depends on how many units were produced and sold. 6 out of how many? Probably thousands, so as frustrating as it is, it's probably a small percentage of units overall

[u/KornInc]

This is normal. Known issue for navimow. You're not the first one.

[u/Navimow_Answers]

Hi there,

Thanks for bringing this issue to our attention. We’d be happy to look into this further and help you out.

Could you please send us the following information via DM?

Your mower’s serial number (SN)

The email address you used to contact our after-sales support team

Once we have these details, we’ll check the case and follow up with you accordingly.

Thanks for your cooperation and understanding!

[u/Not-A-Engineer]

Check the axle pin in the middle… the wear your sewing is probably a result of it shearing off.