Dealer wants to clean fan, "trans axle service," $611 total

Too much!
28,000?
You need to follow the maintenance schedule that came with the car.
10 years, a lot needs to be done, though tranny fluid is not on there , it’s a good idea.
Battery fan does not need to be cleaned and the filter is on the side of the rear passenger seat, you can look at it yourself

 

Find another dealer or private mechanic.
$150. For tranny and $100. To clean the fan if you choose.
Fan is only an issue if you carry shedding pets

 

Your 2012 may not have a filter. My 2012 didn’t. This video will answer all your questions.

 

Just diy

 

There's no battery-air filter, if it's the same as 2010-11. You can fairly easily improvise a filter to go on or just behind the intake grill at the side of the rear seat.
The transmission oil is fairly simple to change DIY---not much more laborious than an engine oil change. $270 is at least double what that should cost, even if they're billing $100/hour.

 

There IS an A/C filter, behind the glove box.
Just remove the lower glove box, press the tab on the white cover and
remove it and there is the cabin air filter...

 

I put the Toyota filter and an AC filter and have not had any problem.
I have two dogs, lot's of FUR! It's never overheated, never had any problems.
Those filters catch the fur and a lot of dust and dirt.
It pops right off and easy to clean with water. Then clips on...

 

$100 for transaxle drain and fill, ditto for fan cleaning.

 

It was not very nice of your dealer to tell you that they are the only place that can do the work, especially saying that after replacing the IPM.
https://static.nhtsa.gov/odi/tsbs/2018/MC-10145758-9999.pdf
wondering how they know your transaxle fluid needs changing.

 

Toyota dealers tend not to suggest tranny fluid replacement in their cars as it is claimed to be a "Lifetime" fluid. It is not gong to last the life of your car if you want your tranny to last 300k miles. I do an ATF drain/ refill at 30k miles (to get out the break-in metallic wear particles) and then a second one at 90k miles and every 90k thereafter. This approach was derived by tracking ATF using lab analysis every 60K miles in my 2004 Prius which showed the degradation of Type WS ATF with time/miles.

JeffD

 

I did a transaxle fluid drain-and-fill very early, around 15K kms and one year, and it was markedly darker than new fluid. Did a couple more changes, progressively further spaced, and the drained fluid looked increasingly close to new, so I've resolved to forget about it for a long time now.

 

"Lifetime" in the car business means: Until the warranty expires....
Then they are off the hook!

 

I changed the tranny fluid at 36k . It looked like it didn't need changing, but 36k was at least 80% EV, though I wonder if EV % makes any difference in tranny fluid flush, probably not a big deal either way.
I have 4 more qts of WS and am going to change it again, eventually.