A10 Piston SA Warranty and What to Do If It Breaks
Are you worried about any of these with your A10 Piston SA?
- Where do I get it repaired if it breaks?
- I want to fix it myself
- Only an accessory broke, so I just want to buy that part
- It keeps stopping right away
- What should I do if it was faulty from the start?
I worked repairing machines for 10 years, and I'll use that experience to show you how to figure out what's actually wrong.
I use the A10 Piston SA myself, so this comes from real experience.
I checked with the maker, and the conclusion was: the A10 Piston SA has no warranty.
That “no warranty” conclusion was about the old A10 Piston SA, checked in 2022.
The A10 Piston SA +PLUS does have a warranty.
See “Does the A10 Piston SA Have a Warranty?” below for the conditions.
The maker doesn't handle repairs either.
The +PLUS is accepted for paid repair even after the warranty ends (checked on VORZE's official support page).
But the old A10 Piston SA, which charges with an AC adapter, can't be repaired.
For a precision device like the old model, that hurt.
Many problems are easy to fix, so it would be a waste to throw it away just because you think it's broken.
I hope this article helps you keep using your A10 Piston SA for a long time.
If you haven't bought an A10 Piston SA yet, read this article so you get a genuine one.
Where to Buy a Genuine A10 Piston SA for the Lowest PriceWhere to buy a genuine VORZE A10 Piston SA + PLUS in Japan: NLS vs. Amazon Japan vs. FANZA prices, stock history, must-have extras and scams to avoid.Read the article ›
Does the A10 Piston SA Have a Warranty?
The A10 Piston SA has no warranty.
“No warranty” was the answer I got in May 2022, about the old A10 Piston SA.
For the A10 Piston SA +PLUS's warranty terms, see the table below.
When I asked RENDS, the maker of the A10 Piston SA, by email in May 2022, they told me there was no warranty.
There was no warranty card in the box my A10 Piston SA came in, either.
And there was nothing about a warranty on the receipt.
Warranty terms for the +PLUS
Here's what VORZE's official site says (checked on September 25, 2026):| Item | Details |
|---|---|
| Period | 3 months from the purchase date, with or without a warranty card |
| Coverage | Free repair or replacement if a fault appears when used as the user guide says |
| Not covered | Used or passed-on units / use outside Japan / consumables such as the built-in battery |
| When the warranty doesn't apply | No document showing the purchase date / drops, impacts or water damage / repairs or mods not done by VORZE |
Keep something that shows the purchase date.
For what to watch out for with used units, see the risks of buying used.
Problems right after delivery: contact the shop
NLS says it inspects and exchanges faulty items and items that aren't what you ordered.Once an order is confirmed, you can't return or exchange an item just because you changed your mind, unless it's faulty.
Check that it works on the day it arrives, and contact the shop if anything's wrong.
Where Do You Send an A10 Piston SA for Repair?
In the past, there were reviews saying “you could send it for repair because RENDS makes the A10 Piston SA.”
I asked by email, and they told me they don't do repairs (May 2022):
“We do not repair the A10 Piston SA or the A10 Piston BASIC.”
That “no repairs” answer was about the old model, in 2022.
The A10 Piston SA +PLUS, which charges over USB-C, is accepted for paid repair by VORZE.
However, VORZE may decide to turn down a repair.
For the A10 Piston BASIC, the RENDS official contact form has a “BASIC warranty / repair” option.
I couldn't find how long the BASIC's warranty lasts on the official pages.
Their email reply came in less than a day, so if there's something you're not sure about, it's worth asking them by email.
You can contact them through the RENDS official site.
>>> Contact RENDS
How to ask about repairing a +PLUS
On the support page of VORZE's official site, read “About the warranty” and “About paid repairs.”In the contact form, choose the “Warranty / repair” category and enter the product name and when you bought it.
How RENDS Handled Repairs in the Past, and What to Do If They Repair It
One reviewer said they sent their A10 Piston SA to RENDS for repair, but it couldn't be fixed because it was “too dirty.”
So I recommend cleaning it thoroughly before sending it in for repair.
I also recommend taking photos of it with your phone before you send it.
That way you have the photos as evidence, and you can ask them to explain exactly how it was dirty.
If the A10 Piston SA Keeps Stopping, It's Not Broken
When you first start using the A10 Piston SA, it may stop almost as soon as you put your penis in, and you might think it's broken.
But it isn't broken.
It simply stops because there isn't enough lotion, so the A10 Piston SA is under too much load.
If the red lamp lights up and it stops, it's probably under heavy load.
The fix is to put your penis in with the power off first, and move your hips yourself to get things slick.
Then when you switch it on, it won't be under such a heavy load and it will keep moving.
Low-speed modes put more load on the A10 Piston SA.
Set it to level 3 or higher: the movement gets stronger and the load actually drops.
If you go from high speed to low speed, it stops less often.
Start the +PLUS at low speed
With the +PLUS, start it at low speed once you're inside, then raise the speed little by little.The user guide warns against inserting while it's running and against using it for more than 60 minutes in a row.
Even with the +PLUS, some reviews mention it catching for a moment at the lowest speed, or stopping depending on the angle of the unit.
If it stops, check the lamp in the troubleshooting table below.
Please read this article too.
If the Cap Keeps Coming Off, It's Not Broken
When you first start using the A10 Piston SA, the cap will probably come off now and then.
Don't worry — it isn't broken.
There's probably too little lotion in the A10 Piston SA sleeve, so the heavy load pops the cap off.
The fix is to use plenty of lotion.
Putting your penis in with the power off and moving your hips to get things slick first also helps.
I was stingy with the lotion once, the cap came off, and it pinched the skin of my thigh. It hurt.
If the +PLUS's cap starts to lift
If the entrance cap (the cap over the opening) starts lifting while it's running, stop and add more lotion.The entrance cap is a consumable.
If it cracks or you lose it, contact VORZE.
First, Try the Troubleshooting Table in the A10 Piston SA Manual
The user manual has a troubleshooting table for when something goes wrong.
Start by checking the problem against this table. I translate its main entries below, after the notes on the +PLUS.
Reading the +PLUS's lamps and power
The image above is from the manual for the old A10 Piston SA.For what the +PLUS's lamps mean, see the table below.
| What you see | What it means / what to do |
|---|---|
| Power lamp flashes green | Charging; the lamp goes off when fully charged. It won't run while charging. |
| Power lamp flashes red | The battery is low; charge it. |
| Mode lamp is blue | Connected to a phone or VR. Only the power button works. |
| Mode lamp flashes red and the power cuts out | Forced power-off because of a heavy load. |
| Won't turn on when it arrives | The battery may have run down; charge it fully. |
The user guide PDF can be read on the support page of VORZE's official site.
The inner case won't come out
Press and hold the eject button to bring the inner case all the way to the front, then turn the inner case to the left to unlock it and pull it out.
If the +PLUS's inner case won't turn, wipe the oil off your hands and the case, or turn it wearing rubber gloves.
Turning it to the left unlocks it.
Don't force it; if it still won't turn, contact VORZE.
The mode lamp flashes red and blue alternately and the buttons don't work
Press the eject button to switch back to operating mode.
The mode lamp is lit blue and the buttons don't work
Check that it isn't connected to the dedicated wireless adapter or the smartphone app. (As of September 2026, NLS notes that the current 4DMEDIAPLAYER doesn't support the VORZE wireless adapter; on a PC, use built-in Bluetooth or a standard Bluetooth adapter.)
The mode lamp flashes red and it can't be operated
The motor has overheated and is cooling down. The power turns off automatically once it has cooled.
Damaged or lost parts
Contact [email protected].
You Can Buy A10 Piston SA Parts at NLS
Just because part of your A10 Piston SA broke doesn't mean you have to replace the whole unit.
These A10 Piston SA parts were on sale (May 2022):
- Cable
- Inner case
If an A10 Piston SA accessory breaks, buy the replacement at NLS (the official Japanese online store for RENDS/VORZE), which sells them.
For example, if the case that holds the dedicated sleeve breaks, you only need to buy that part.
Replacement parts you can buy at NLS
At NLS, the A10 Piston SA inner case was ¥2,057 and in stock (checked on September 25, 2026).On July 12, 2023, the inner case was changed to the same hinged design as the +PLUS and the BASIC.
The charging cable for the old A10 Piston SA has been discontinued.
That cable doesn't work with the +PLUS.
I couldn't find a USB-C cable for the +PLUS in NLS's parts list either.
If a +PLUS accessory breaks or goes missing, contact VORZE.
>>> See A10 Piston SA parts at NLS
What to Do If It Won't Charge
The key is to narrow down where the problem is.
You need to work out whether the unit itself is broken and can't charge, or whether the charging cable is broken.
First, check whether the charging cable is damaged.
If there's clearly a damaged spot, buying just a new charging cable was the cheaper fix when I wrote this (that cable has since been discontinued — see above).
With the +PLUS, check your charger's output
The +PLUS charges over USB-C and takes about 3 hours to charge fully.The official FAQ recommends a charger with an output of 3 A or more.
If the output is too low, it may charge slowly or not at all.
As the user guide says, use the included USB-C cable.
If it still won't charge with a charger that meets these conditions, contact VORZE.
>>> See A10 Piston SA parts at NLS
Be Most Careful Not to Drop the A10 Piston SA
The A10 Piston SA is heavy, so if you drop it, it may break.
Because it's heavy it's also hard to handle, so there's always a risk of dropping it.
I've nearly dropped mine several times.
I've also banged it hard against my desk.
I usually use it while wearing a VR headset that syncs with the A10 Piston SA, and since I can't see well, the risk of dropping it is higher.
Buying a mount reduces the risk of breaking it this way.
The +PLUS weighs 2,283 g without the sleeve.
According to the official FAQ, the VORZE Arm Stand mount works with the +PLUS and the BASIC.
Here's the related article:
How to Mount the A10 Piston SA: Holder vs. Stand BasicHow I hold my VORZE A10 Piston SA hands-free: the Den-Ona Holder, Stand Basic and Arm Stand compared, plus free ways to keep it steady without a mount.Read the article ›
Watch Out: The Charging Port on the A10 Piston SA Often Breaks
Problems with the charging cable connection are pretty common.
With other electronics, too, the base of the cable is where things break most often.
If the charging cable breaks, it's not a big problem, because you can buy just the cable at NLS.
NLS has discontinued the charging cable for the old model.
The +PLUS has a warranty and paid repairs, so even if the unit breaks, you won't necessarily have to buy a new one.
For the warranty terms and who to contact, see the warranty and repair sections above.
But with the old model, if the unit itself breaks, you'll have to buy a whole new one.
Handle the unit with great care.
Lotion Getting Inside Can Also Break It
The A10 Piston SA isn't waterproof.
Water getting inside may break it.
Take steps to keep lotion from getting in.
Because it stops under load, you tend to use a lot of lotion.
That's why it's important to take the sleeve out quickly after you come.
And wipe off any lotion running onto the unit right away.
If you use a non-dedicated, open-ended sleeve, the risk of breaking it goes up.
It's a pain in the post-orgasm lull, but do it — there's a risk of breaking it.
Which parts of the +PLUS can be washed, and how to care for it
The +PLUS isn't waterproof either.Only the dedicated sleeve and the inner case can be washed with water.
The main unit and the entrance cap can't be washed with water.
Turning the sleeve inside out to wash it can damage it.
Keep lotion off everything except the sleeve.
After use, wipe the unit with a dry cloth.
Using it in a cowgirl position (lying on your back with it on top) is a good idea, because lotion is less likely to run into the unit.
If you use it normally, you should be fine.
Using a fairly thick lotion also matters.
A runny lotion could get in and corrode the A10 Piston SA's circuit board.
The maker sells its own lotion (VORZE Smooth Lotion, ¥836 (about US$5) at NLS as of October 1, 2026), which is thick, so using that is the safest choice.
Leave It for a While — It Might Fix Itself
Surprisingly, leaving the A10 Piston SA alone for a while can sometimes fix the problem.
I'm sure you've had machines do strange things like that too.
Giving it time also helps you cool your own head.
It's possible some lotion reached the circuit board, and once it dried, the toy started working again.
A +PLUS that hasn't been used for a long time may have a low battery.
The official FAQ says to charge it fully before using it.
If a fault appears during the warranty period, don't wait too long — contact VORZE.
Reviews About A10 Piston SA Breakdowns
Review 1
After six months, the gears started making a strange noise.
I contacted support and sent it for repair.
“A large amount of dirt has built up inside.”
They said it couldn't be repaired.
All I got out of it was ¥2,000 in shipping costs.
Review 2
It broke two months after I bought it. When I switched it on, the red lamp flashed and the power cut out right away.
It came with no maker's warranty, so I was worried whether they'd help. They replied by email right away.
I sent the broken unit for repair that same day, and it came back in a week.
Update (September 2026): Reviews of +PLUS repairs
Others felt the paid repair was expensive.
Summary
The most important thing is to use the A10 Piston SA carefully so it doesn't break.
If it does break, don't panic — try the fixes in this article.
If it still won't work, ask the maker.
For a broken +PLUS, use the contact form on VORZE's official site and choose the “Warranty / repair” category.
For the BASIC, use the RENDS official contact form.
If you're replacing it, I recommend buying a new +PLUS from NLS, the official store.
For choosing a model, see my comparison of the A10 Piston SA +PLUS and the A10 Piston BASIC.
The maker should know all kinds of breakdown cases.
Their advice might fix it easily.
If you haven't bought an A10 Piston SA yet, read this article so you get a genuine one.
Where to Buy a Genuine A10 Piston SA for the Lowest PriceWhere to buy a genuine VORZE A10 Piston SA + PLUS in Japan: NLS vs. Amazon Japan vs. FANZA prices, stock history, must-have extras and scams to avoid.Read the article ›