240 degrees!!!

how much does the trailer weigh?

 

No...with just fresh charge you are still under the boiling point....


Posted via the PriusChat mobile app.

And i will suggest to go on SUV hybrid like....Lexus or Toyota
Prius are not made for this type of trips you have

Posted via the PriusChat mobile app.

 

240 is extremely hot.

I don't think your inverter coolant is in great shape. I would check the inverter coolant pump operation by putting the car in ready and take the cap off the inverter reservoir and look inside that tank for good circulation. Should show lots of movement. This coolant and pump also services the transYour lucky seen so many posts of g2 on the side of the road after pulling loads up big hills and inverter crow barring from overheat.

 

These are MG temps he's worried about. Oil will be fine even above 300C. I wouldn't worry about it. THIS is the reason most temp gauges in cars are not accurate. If they were, they panic the consumer.
As already posted, from the owners manual and info Toyota puts out, the Prius IS NOT designed to tow. Period. It WILL cause worrying things to happen if you do. I'm not saying you can't, I'm saying Toyota tells us we shouldn't.
You may believe whomever you like, but I tend to believe the engineers who designed the car. To tow, use a vehicle designed for it.

 

At first I was worried that I saw Flash points for ATF at 160 to 200 Degrees, but then I realized they were in Celsius, your 240 F is only 115 degrees C.

If I were asked what would be inappropriate for a Prius, hundreds of miles of unpaved road would be my only scenario.

 

If you respectfully disagree....then I wish you good luck.....Keep on hauling with your Prime

Posted via the PriusChat mobile app.

 

Getting maintenance done by others, and heading off on a long road trip the next day, towing a trailer, all of these are not good for your odds. Anyway:

Who did the transaxle fluid change, and what fluid was used?

 

Ok, sorry. Did you have the car level during the transaxle fill, filled till it started coming back out? Just going through the possibles.

 

I hope I am not the guy that buys your used car in the future. Be sure to let them know about the trailer.

 

I do not suspect engineers, I suspect lawyers. The Magnuson-Moss Act is on your side, Toyota has the burden of proof you damaged it with a trailer. You have no burden to prove you didn't.

 

With all regards....You are extremely rude person....Towing and hauling are two different type of stress on power train.. .How some people react . .you should not get offended....From your post is evident that this is not car for trip you did

Posted via the PriusChat mobile app.
And I never say this car can't be used for towing trailer...
Just not for so steep long hills

 

Will do.

 

A very touchy subject. I am glad you know better than the Toyota engineers. "As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one." Godwins Law

 

To the OP & anyone else interested in some facts - try reading this whole thread,
Mg1 & mg2 temperature???
then download the oakridge_2010prius.pdf
Then read that pdf.

By the time you are finished you will have lots of solid information to throw around.

My take on the situation is that there was probably no harm done from the occasional 240F temps seen on MG2.

 

I'm a right tool for the job person.
And IMO...The Prius by Toyota's own definition is NOT recommended to tow...ANYTHING.
I default that for towing? It's simply not the best tool for the job. Well worth renting something that is a better tool for that job.

But when this is brought out?
It inevitably turns into....

"But I towed a Replica of The Statue of Liberty up Pikes Peak using my Prius and it was fine...blah, blah..blah...."

So?

Those the tow with their Prius? Tow with their Prius.- It happens.

At least the OP in this case was carefully monitoring the conditions, and has concern. How many owners have done similar things, with no extra monitoring and are not even aware of increased temperatures?

As far as opinion? Well..I can't tell over the internet whether any potential damage was done. I tend to be a conservative, and protective owner of my vehicles, so if your Prius survived the 12 day road trip and evidently grueling Apache Summit assault? I might be anthropomorphic and "reward" my Prius with fluid changes. If changing the transmission fluid again, and the Oil relieves any worries of concerns? It's probably worth it on that basis alone.
If any significant damage has been done? You'll probably only find out with the passage of time, and it's probably going to reveal whether you change the fluids or not.

PS.
I do wish Toyota would be a little more revealing as to exactly from an engineering standpoint The Prius is given a No Towing recommendation. That might go a long way to stopping the behavior and ending the debate.
My concern or opinon..thought..has been it might have as much to do with towing with The Prius computer controlled regenerative brakes and/or traction control...as it might have to do with the Hybrid electric motors and Hybrid Synergy Drive.
But not much explanation from Toyota outside of the announcement that it's not recommended.

 

Even towing with a truck can cause the transmission to get hot. If towing it's a good idea to get a transmission cooler. Towing on flat land vs steep inclines is also a huge difference. As far as engineers most are smart but not street smart. Use some common sense and I will return to my armchair.