~100K miles, never any problems, what maintenance should I do?

http://www.toyota.com/t3Portal/document/omms-s/T-MMS-12PriusV/pdf/2012_Toyota_Prius-V_WMG.pdf Page 48

"Initial engine coolant replacement at 100,000 miles/120 months. Replace every 50,000 miles/60 months thereafter.
Initial inverter coolant replacement at 150,000 miles/180 months. Replace every 50,000 miles/60 months thereafter.
Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information."

and in the back
"Engine/Inverter Coolant Drain the cooling system and refill with an ethylene-glycol type coolant. Inspect hoses
and connections for corrosion and leaks. Tighten connections and replace parts when necessary. A qualified technician should perform these operations.

Your Toyota is equipped with Genuine Toyota Super Long-Life Coolant. The replacement intervals for engine coolant recommended in this booklet are based on replacement with Genuine Toyota Super Long-Life Coolant or similar high-quality
non-silicate, non-amine, non-borate ethylene-glycol coolant with long-life hybrid organic acid technology (i.e., a combination of low phosphates and organic acids). If another type of ethylene-glycol coolant is used, replacement intervals may be different."

There are two separate systems.

 

Thank you.

 

The US booklet for 3rd gen also stipulates a longer interval for inverter circuit. However Canadian booklet doesn't make a distinction, specs same for both. Safe to say it's somewhat arbitrary. And doing both at the engine circuit's spec'd interval might be more convenient, certainly doesn't hurt.

 

If you do make sure they know which one it is, or educate yourself thoroughly by looking at transmission fluid changes for G3 in youtube and be present when they open the plugs.

I brought mine to my mechanic and he almost mistook the inverter coolant plugs for the transmission plugs.

 

According to the maintenance schedule the only one is the engine coolant. Inverter coolant is at 150 k. They are separate systems.

 

No, they don't need to be "flushed," ever. Just drained and refilled.

The easy but expensive way to be sure you're using the proper stuff is to buy the Toyota brand.
Low-priced coolant that claims to work in anything may cause trouble.
In between those extremes, you can find coolant that meets Toyota requirements at intermediate prices in some auto parts stores ---even Wal-Mart lately. Read labels carefully!

 

When exactly are you supposed to replace the Trans axle fluid? And does the routine maintenance just loop back again at 120k. My 2012 Prius V5 is almost at 100k and I haven't really done anything, aside from what the manual says, I'm not really sure if im missing anything else. Is there an extended maint schedule on the forums somewhere or is it the same for the regular prius?

 

It's supposedly a "lifetime" fluid. When I changed the "lifetime" fluid in my 2010 Prius II at 140 k miles, it was dark black (supposed to be red). ATF WS is what to replace it with and if you are close to 100 k miles, probably should do it.

Follow the maintenance manual and you'll be ok. The Prius is easy to maintain, mainly fluid drain and fills other than brake pin lubrications and
tires.

After 120 k, keep up with oil changes and keep an eye on the dipstick. Coolant flushes every 50 k miles or so and trans drain and fill every 60 k miles or so.

 

Toyota says nothing about changing it. To directly answer your question, I'd say early in the car's life, say around 10~15K miles, then maybe every 30~60k miles thereafter, depending on your tolerance. DIY, it costs around $40, and an hour or two.

Did ours for the third time Friday, I'm a little embarrassed to say at what kilometers, we're very low use. I'm figuring tri-yearly.

 

Is changing the 12v battery recommended as well, serpentine belt, and the pcv valve all recommended or just to be inspected per each interval?

Thanks for the guide!

 

Our Prius was built July 2009 and still on the original 12v battery at 140 k on the odometer. I have a jump pack for when it fails I am not stranded.

No serpentine belt, timing chain.

PCV valve I changed at 120 k miles and it was still checking. Worth a check to see your case though.

 

The most important thing anyone can do at 100,000 is have the beverage of your choice.

 

Gen 2 (2004 to 2009) has a serpentine belt, Gen 3 (2010 to 2015) is beltless.

 

@Dain Hill Just realized you have second gen., guide is 3rd gen. The transaxle fluid change for second gen is very sim though. Drain and fill bolt style varies, and I believe qty of fluid is slightly less. Important point with either gen: the car should be level when refilling, basically you pour till it starts overflowing. That sets the correct level.