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WD M.2 SSD Suddenly Fails! Step-by-Step RMA Guide with Images
🪧 Introduction
An WD M.2 SSD (WD Blue SN580 1TB) that I had been using in an external enclosure for about a year suddenly became inaccessible with the error message "The function is incorrect."

This is the product that failed
I wasn't using it heavily, but it just broke down suddenly.
After feeling a bit down and doing some research, I discovered that this product comes with a 5-year manufacturer's warranty and that you can apply for a warranty replacement (RMA) through the official website.
In this article, I will document the detailed steps I took to apply for an RMA with WD and successfully get a warranty replacement for my broken M.2 SSD, in chronological order.
I hope this helps when you suddenly find yourself with a dead M.2 SSD and think, "Oh no, another expense... 😱"
🔖 Procedure
1. Check Warranty Status
First, go to SanDisk's warranty service page and check if your product is still under warranty.
Click "Create Warranty Exchange." ↓

Click "Check Warranty Status." ↓

Enter the serial number printed on the product and submit. ↓

If the product is still under warranty, a warranty exchange may be possible. ↓

2. Request a Warranty Exchange
From the warranty exchange menu, click "Request In-Warranty Exchange." ↓

You need a support account to receive warranty service.
If you don't have an account, create one and log in. ↓

Click "Warranty Exchange." ↓

Click "Let's Get Started." ↓

To use the warranty exchange service, you need to register your address.
Click "Add New Address" and register your address. ↓


Next, register your product.
If not registered, select "Register New Product" and continue. ↓


Select the product you want to claim under warranty and continue. ↓

Select the reason for the exchange.
For this case, I chose "Hard drive not recognized." ↓

Select "Standard Warranty Exchange" and continue. ↓

Confirm the shipping address and continue. ↓

Review the entered information and submit if there are no issues. ↓

A warranty exchange ticket is created and the exchange procedure is explained. ↓

3. Shipping the Product
Log in to the SanDisk support site. ↓
Your RMA exchange number will be displayed under "Recent Activity"; click the link. ↓

Click the link at the top: "Sign up for text updates / Reprint label." ↓

Click the "Print Label" button. ↓

Print the displayed page.
Include the printout inside the package, and also affix the barcode to the side of the box. ↓

I sent it using Yamato Transport's "Takkyubin Compact" service.
Shipping fee: 440 yen (including membership discount) + box fee: 70 yen.

After the manufacturer inspects the product and approves the warranty exchange, a replacement should be sent to you.
4. Arrival of the Replacement
In my case, the warranty exchange was successfully approved.
I shipped the defective product on Saturday, and the replacement arrived the following Friday, so it took about one week.

🎀 Conclusion
This RMA (warranty exchange) resulted in:
- Time from application to arrival: about 1 week
- Cost: 510 yen (Takkyubin Compact shipping + box fee)
- Required documents: RMA label (printed) + product only
The process was smoother than I expected and surprisingly simple.
To avoid panic in case of emergency, it's reassuring to keep track of the warranty status of your storage devices.
I hope this article helps someone else who suddenly finds their SSD dead!
That's all for this time.
See you, bye bye 😊
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