Bought me a 2010 Prius IV!!!!!!!!!!!!!!

yayyyyy!!!!!

congrats! that's your brake accumulator being filled. it happens quite often, but is most noticeable when you first open the drivers door.

yes, you could call it two stage, regen, then friction.

the motor warms for pollution reasons and takes longer and more often as it gets colder out or if you turn up the temp. it will also come on to recharge the battery if necessary.

some here recommend changing the tranny fluid.

you need to change the model in your info.

all the best!

 

My peripheral advice would be try NOT to worry about everything at once.
In other words, it is a hybrid which means it has a gasoline engine. The system, or Hybrid Synergy Drive will determine when the engine runs and when it doesn't, and although there are factors one can comprehend and apply as to "Why", sometimes it seems counter to the immediate reality. In short, yes, The Prius is designed to keep it's engine warm to lower emissions. So sometimes when it seems it doesn't need to run, it will run. But overall, I'd keep a "vague" eye on specifics of feedback.

For a while, just drive it and enjoy it, and monitor gas efficiency by miles driven and how many gallons you are buying at the pump. And don't worry too much about what a gauge is immediately telling you. New owners can get overwhelmed by what they "think:" the Prius is telling them.

 

This. Accelerating or going up a hill takes a lot of energy, don't worry about it getting 12MPG for a few seconds.

155k miles on a 2014? Wow.

 

I probably shouldn't HAVE to say this...just in case...

But when I say keep an vague eye on specifics of feedback?

I do NOT mean ignore warning lights or oil level, or a check engine light.
You ALWAYS want to be attentive to those things.

 

If you want to access the car interior without activating the brake pressurizing, say for something in the glove box, or to pop the hood: get in through the passenger side, avoids it triggering.

 

Go here:

TIS

Then choose the Manuals Tab, select your make, model and year, and you can download both the Owners Manual and Warranty and Maintenance Guide.

Gen 3 doesn't have coolant storage bottle anymore; does speed warm up by running coolant lines through hot exhaust gasses.

 

agh, I don't think there is an oil wear indicator on the Prius, you just change the oil a 10k intervals. At 155k Prii tend to start burning oil, check frequently until you figure how much oil it is using and all should be good.

 

The Oil Maintenance reminder will display every 5,000 miles once reset. This is for the tire rotation and check fluids maintenance items. The oil change is at 10,000 miles, as long as you use 0W-20 synthetic oil. As mentioned, download the user guide and maintenance schedule from either TIS or the Toyota Owner's Online websites. Lots of good info, even though the English translation leaves something to be desired...

 

Here's the link , Just type your mileage in the rectangle and you will get your service schedule .

2010 Toyota Prius Manufacturer Service Schedule and History - DriverSide.com

 

That would be extremely messy.

 

OP said 2010 IV, not 2014