How long does it take to warm up?

not that long. of course it depends on ambient air, but 5 minutes at the most i would say.

you know when the engine shuts down and you can coast with it off, or it is off when you stop

 

I think engine will shut off before it's completely warmed up? It'll shut off just at a full stop, say at red light, and as long as cabin heat requests are low. I'd call that partially warmed up; it still won't shut down if you lift off the throttle while moving. Bottom line, there's multiple stages of warmed up.

We confuse ours too, with the block heater methinks.

 

i know im not helping, but gen 4 based on video bellow starts fully using electric motor after driving 0.7miles at 63°F outside temp, but said car was parked in garage with 72°F room temperature.

Gen 3 should take longer, but i agree with @bisco up to 5min should be normal time in witch car should be able too use hybrid system fully

Video:

 

Absolutely.

Here is some warm-up information from PriusChat's pre-historic days:
The Five Stages of Prius Hybrid Operation | PriusChat
http://techno-fandom.org/%7Ehobbit/cars/five-stages.txt

 

Usually about 5 minutes to warm up. A bit longer during the Winter months. You will know when the car can cruise on the traction battery.

 

You all are fake news!!!

I just drove 15 minutes no farther than 10 miles, all under 35mph. ICE was only 168F after the drive with bottom grill fully blocked, ambient temp was 79F 8am.

 

Can a gen 1 member please post their warm up time also, it would soooo help us gen 3s

 

Don't the internal computers consider that as being fully warmed up? My other car (a Subaru) turns its cold-engine light off at about 140F. Its predecessor, with a needle temperature gauge, collapsed the whole temperature range of about 145-210F to a single gauge point as part of its 'customer expectation management'.

Sure, it is not up to the thermostat setting that it reaches in standard flat highway speed conditions. But low speed city / suburban streets with plenty of ICE-auto-off time might never get higher than that.

 

final stage is only 70c, or 158f according to ken in tide's link above.

and if the engine is as low as 60c, 140f, when you power up, it is already in the final stage

 

Am I reposting a link, not sure. This was my grill block bible:

2010 Prius Grill Blocking strategy | PriusChat

Anyone know what SuperMID stands for? @Tideland Prius?

Almost all in Japanese:

PRIUS DIY

^ looks like a ScanGauge on steroids.

 

That's a great guide. I wish he specify if it's warm up on driving city limits, stop and go, or heavy highway traffic to go along with the guide.

 

Steady highway speeds warm it up best I would guess. And/or sustained up-hill climbs. If you're going up any mountains I would take all grill block out for sure, any time of year.

 

I was being a pain on purpose because no one mentioned about elevation and long stretches of non-stop driving under 42 mph will affect warm up time also. That was this morning drive to the 1st grocery store, in fact its an descending hill that I begin on. I only pushed with ICE taking off from red lights and the rest was EV. Fully warmed up is 190 +, I came short of that temp even with the yesterday summer heat that stayed around.

 

I seem to remember it being an Arduino-based predecessor to, or alternative for, the ScanGauge.

----
Not yet sure if it is an Arduino, but it is mentioned on a Wikipedia page: OBDuino - Wikipedia

Also used on the modded AeroCivic: Inexpensive MPG Modding | Hackaday

 

One interesting thing about those old Prius warmup stage threads - EGR was not even on the radar back then. Sometime after S4, (up to several minutes in non-freeway driving) the catalytic converter gets hot enough to allow the use of EGR. I consider that "fully warmed up" with maximum fuel efficiency possible only at that point. Call it S5?

 

In my opinion, 190F+ is fully warmed up