Advice for LOW mileage 2009 Nissan Sentra

H

hamiltzp

Joined
Nov 29, 2025
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Thanks for letting me in the group. I'm a DIYer, and not a car nut per se, but I do what I can. I recognize the expertise here, so looking for some advice.

I have a 2009 Nissan Sentra with 52k miles. The short version: My dad bought it brand new. He died a couple years later and I got it. It hasn't been driven a whole lot over the years, but now my son is the primary driver.

I've heard mixed reviews on the Nissan CVT transmissionmissions of that era - some say they were problematic, but I've also heard that Nissan had worked out a lot of the kinks by 2009. I've never had it serviced, but it obviously has really low mileage for its age and seems to shift OK. The car is generally in good shape. I'd like to take care of it, but I'm not sure what my next step is.

I do my own oil changes, but I'm not sure I'm comfortable doing the transmission service. So, dealer or independent shop? Flush or drain and fill? Anything else I should be thinking of?

Thanks.
 
Nissan CVTs were notoriously bad. They are a reason many Americans developed negative views on CVTs in general.

I'd be thinking of what value I could get for this car on the used market in it's current condition.
 
I agree that Nissan CVT's were fairly bad in that era - bad meaning likley 20% of them gave up before the rest of the car. I personally know however several people that had no problems to very high mileage. They weren't fixed in my opinion until 3rd generation in 2020.

But there pretty easy. If you can change engine oil you should be able to do the CVT.

 
My experience with male teenage drivers and transmissions is not good. I would explain to him that the transmission in his car is made out of glass and cotton candy and that if he breaks it, he bought it. Who knows, your son might listen to you. Mine didn't. :LOL:
 
Like others said, the CVT fluid isn't difficult to change on your Sentra, and changing it regularly will usually prevent problems :)

Do it cold, measure how much drains out, then refill with the same amount of new fluid. If you don't have a measuring bucket, Home Depot and other hardware stores have one at a good price.

It doesn't matter what brand of CVT fluid you use. While your factory fluid is green, some aftermarket ones may be a different color, like amber or red. This is not a problem. If you still want something green, then Cam2 is the cheapest CVT fluid that is green.

How are the tires? An older car that has been sitting awhile might need new tires. If you need winter/snow performance, consider those all-weather tires. There are many to choose from, and some of them are a very good price.
 
Big yes on doing a drain & fill. I'll skip repeating the words.
Perform other maintenance on the car. Treat the weatherstrips, clean the interior and engine compartment deeply, if necessary.
Tires were mentioned. Now's a great time to "not cheap out".
Brake fluid refresh? Brake hose exam?

Regarding the value of this car:
From what you've told us, the greatest value you can extract from this vehicle is to use it.
It's bought and paid for.
It adds a huge dose of simplicity to your life as I (we) assume you'd be seeking a vehicle for your son otherwise.
Everyone doubts you could do any better value wise peddling it on the used car market.

Tell your son he is to drive the car conservatively, PERIOD.
Break his right foot with a sledge hammer and tell him to put $400/month into a piggy bank.
If he trashes the car, tell him to crack the piggy bank and buy his own car.
Simple.

This is a 'count your blessings' kinda car situation.
 
Kira said:
Everyone doubts you could do any better value wise peddling it on the used car market.
Click to expand...

Nah. He could do better.

If there's some sentimentality to the car because it was his father's that's one thing. But otherwise I'd sell that thing while the transmission still works and get into something else.
 
The transmission fluid is just as easy to change as the engine oil. At 52k miles the fluid shouldn't be bad but it should be changed. I'd drain and fill it. You could change the paper filter but those take forever to fill up so i'd leave in in there. The pickup tube has a fine mesh but no real filter just a fine mesh. Castrol transmax atf/cvt works great in these. I use it in a mitsubishi with a jatco jf011e. I think that sentra uses the same exact one. I don't think yours has a dip stick just a fill plug on the dip stick tube but you can get one for cheap on amazon. Get two gallons at walmart. Don't forget to flush the brake fluid and change the coolant. Don't touch the petcock just yank the hose.
 
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MY SIL had a lightly driven Nissan Rogue with a CVT transmission. She changed the oil in the transmission (or possibly had it flushed) and it immediately failed. Replacements are very expensive, probably more than this what car could be sold for.

I think I would take a chance and drain and fill the oil in that transmission (it still has such low miles) but not flush it. Then baby it and drain and fill the CVT oil regularly. That would be its best chance. Fingers crossed. It might go a long time.
 
The cars themselves are pretty good and would be a good choice for a first time driver. Not too much power for a teen driver, but if it gets flogged ... the transmission will die.

The transmission definitely needs a drain and fill along with a filter change. I don't know if that generation of Sentra has a second filter on the side of the transmission, but if it does - change it too.

As long as he wasn't trying to hotrod it , the transmission shouldn't have too many miles to get good life out of it with simple servicing.
 
ecotourist said:
MY SIL had a lightly driven Nissan Rogue with a CVT transmission. She changed the oil in the transmission (or possibly had it flushed) and it immediately failed. Replacements are very expensive, probably more than this what car could be sold for.

I think I would take a chance and drain and fill the oil in that transmission (it still has such low miles) but not flush it. Then baby it and drain and fill the CVT oil regularly. That would be its best chance. Fingers crossed. It might go a long time.
Click to expand...
They must have used a completely wrong fluid that wasn't cvt compatible or what is much more probable being that they screwed up the gasket in the pickup tube and it sucked in air which happens.
 
I really appreciate all the replies. It gives me a lot to think about. To throw a wrench in it, I just discovered that there is an aftermarket cooler and radiator for this transmission. I'm wondering if that would give it a better chance since I've read that the cooling on these was insufficient and that's what caused them to fail early.

Thoughts?
 
I've got about 6-years experience looking after a few Nissan CVT's from 2009-2012. The issues with the transmission are largely due to program issues in the TCU (transmission control unit), lack of early (break-in) maintenance and fluid overheating.

The dealer should be able to update the TCU & ECU but I found a wide range of prices and feedback from dealers in my area. Ultimately it was easier & cheaper to find a used one on ebay that was all ready up-to-date. Haven't looked into the ECU yet but the transmission is doing great with the new code, clean magnets & Amsoil CVT fluid.

- you want to do a CVT fluid change ASAP but even more important is dropping the oil pan
- clean the pan and magnets, recommend doing this annually until they stay consistently "clean"
** I usually use a syphon / vacuum pump to do a quick fluid change
- once the CVT fluid & system are clean and stable you can follow the recommended Severe service interval
- Valvoline MaxLife ATF / CVT fluid is great and usually easy to find, similar to Castrol, use the OE fluid if it's cheaper or makes you feel better
- if you want a heavy duty CVT fluid I'd recommend looking at Amsoil
- get an Android device & buy the CVTz50 app for monitoring fluid temperatures and error codes
- get a blue-tooth OBD2 adapter like VeePeak VP11 or similar
- keep an eye out for sales on Valvoline Restore and Protect engine oil

Feel free to PM me for more detailed info or questions.
 
TLDR
- update your firmware
- keep your CVT fluid CLEAN (and that means keeping the pan & magnets clean)
- keep your CVT fluid from overheating (monitor temps)
 
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martinq said:
I've got about 6-years experience looking after a few Nissan CVT's from 2009-2012. The issues with the transmission are largely due to program issues in the TCU (transmission control unit), lack of early (break-in) maintenance and fluid overheating.

The dealer should be able to update the TCU & ECU but I found a wide range of prices and feedback from dealers in my area. Ultimately it was easier & cheaper to find a used one on ebay that was all ready up-to-date. Haven't looked into the ECU yet but the transmission is doing great with the new code, clean magnets & Amsoil CVT fluid.

- you want to do a CVT fluid change ASAP but even more important is dropping the oil pan
- clean the pan and magnets, recommend doing this annually until they stay consistently "clean"
** I usually use a syphon / vacuum pump to do a quick fluid change
- once the CVT fluid & system are clean and stable you can follow the recommended Severe service interval
- Valvoline MaxLife ATF / CVT fluid is great and usually easy to find, similar to Castrol, use the OE fluid if it's cheaper or makes you feel better
- if you want a heavy duty CVT fluid I'd recommend looking at Amsoil
- get an Android device & buy the CVTz50 app for monitoring fluid temperatures and error codes
- get a blue-tooth OBD2 adapter like VeePeak VP11 or similar
- keep an eye out for sales on Valvoline Restore and Protect engine oil

Feel free to PM me for more detailed info or questions.
Click to expand...
Thanks for all this info. The info about the TCU and ECU firmware is good to know, and I was already planning to do most of the other stuff. What do you think about the idea of an aftermarket transmission cooler/radiator? Do you think it would help, or is that overkill? I read that Chrysler actually came out with a factory retrofit to add a transmission cooler/radiator for models with this transmission, but I think those were Jeeps that did towing. The cooler/radiator for the Sentra is aftermarket.

Thanks.
 
hamiltzp said:
Thanks for all this info. The info about the TCU and ECU firmware is good to know, and I was already planning to do most of the other stuff. What do you think about the idea of an aftermarket transmission cooler/radiator? Do you think it would help, or is that overkill? I read that Chrysler actually came out with a factory retrofit to add a transmission cooler/radiator for models with this transmission, but I think those were Jeeps that did towing. The cooler/radiator for the Sentra is aftermarket.

Thanks.
Click to expand...
I would monitor your CVT fluid temperatures and see how it goes. The unit I'm currently caring for will hit "max" temp (90C / 195F) in about 30m-1hr in the summer (25-30C / 80-95F). If we get stuck in traffic on a long haul it's easy to overheat. This only happens a couple times a year so I'm not worried but a thermostat and extra cooling would definitely help.

If you think you need extra cooling make sure you have a thermostat in the cooling loop. It's good to get the CVT up to temperature quickly just like the engine.
 
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