Recently went over 90,000 miles. What kind of things should I start looking out for?

90,000 is the total mileage of the car since its release, or is it your achievement in six years?
In addition to oil changes, there are quite a few maintenance procedures that increase the life of the car.
This topic describes Gen3 in detail.
2010 Prius Maintenance Schedule (US) | PriusChat

 

There were some cosmetic changes in 2012, a new set of audio and nav choices, and leather upholstery replaced with Softex. By 2015 I think there may also have been revised pistons/rings, possibly less likely to develop oil burning. I would still stick to 5k changes and check the dipstick regularly if it were mine.

 

There's what's due according to Toyota, which is "fairly" complete. There's what's due according to the dealership, which varies, but can border on larceny.

The are things due according to Toyota USA, but ignored by dealerships, likley because it's hard work with relatively low profit margin, coupled with highish labor/parts costs, which scares off the owners. So the two parties "enable" each other.An example of that would be an in-depth brake inspection, which Toyota recomends tri-yearly or 30k miles, whichever comes first.

Then there's things that neither Toyota nor the dealerships want to talk about, deal with. Examples:

1. Transaxle fluid change (god knows why, it's as simple as dirt)

2. Brake fluid change (Gen 3 has a non-Techstream procedure that's easily doable by DIY'rs on their toes. Dealerships will do it if you insist, but tend to give you "brush-off" quotes. Again, not sure why. FWIW, Toyota Canada recommends tri-yearly or 30k miles.)

3. EGR system cleaning. This is the hot potato. With your miles I'd look into it, soon, and repeat at least every 50k miles. I have this unsubstantiated notion that not doing this is the prime reason head gaskets are blowing, around 150k miles.

More info on all of the above in my signature. If you're on a phone turn it landscape to see signatures.

 

just some ballpark numbers:

Transaxle fluid change: $100 (all USD)

Brake fluid change: $150

Brake inspection (no parts replaced): $400~500

EGR system cleaning: $600~800

(The last through a competent independent shop, dealerships are useless. Or DIY: see my signature. On a phone turn landscape to see signatures. )

 

Not a pro, but have a 2007 that blew engine due to oil leaks and a 2012 with 202k that blew head gasket.
1)EGR cleaning
2)Oil checks at EVERY gas fillup and changed every 5k, NOT 10k
3)at 90k you should have had brakes redone already twice.
4) Key fobs go bad. It will start eating batteries weekly. Get a new one from the local hardware store.
5) If your alarm system starts to go off, have them check EVERY door sensor for corrosion/dirt. Took a YEAR for them to figure that one out!

 

That’s a lot of brakes

 

A brake inspection doesn't automatically entail pad replacement. It's kinda analogous to having your teeth scaled, a check up. You pull off the calipers, disassemble and clean the pads/shims, check caliper glide pins, and if any sticking clean and relube them, check runout and rotor thickness, and reassemble everything with appropriate grease at the faying surfaces.

 

When I read redone, it made me think of more than an inspection

 

I wouln't get complacent on the EGR cleaning, at the least.

I'd also be inclined to replace the water pump (more succinctly, the engine coolant pump) around 100K, or not much later. They seem to fail with increasing frequency around 150K, often quietly.

 

The wine kicks in by the time I get certain posts so I won’t be able to get dorm some
Replies.

 

They are not ripping you off. NO ONE is forcing you to go there and get the work done.

 

It can be the least expensive with $10 oil changes and all the other fluids untouched.

Darn cheap until... somewhere around 125k-150k miles when your engine burns a quart of oil every 1200 miles (all the oil in 5,000 miles) because of extended change intervals or use of dino oil, followed by a $2500 brake booster, a failed head gasket ($2500 hg to $7500 engine) and a sudden inverter stranding (inconvenient but cheap due to extended warranty). Oh yes, can't forget the $2700 hybrid battery (prices going up), all possible before 200k miles on a low maintenance poorly engineered gen3.

Not normal on a hybrid. 200k-300k is more like it depending on braking habits and perhaps salt free winters.

Probably will be $45 plus tax, still a deal although the inspection is just looking for more commissions.

 

I did not misread the post.
You don’t understand what I wrote.

They can’t rip anyone off. If they say it will cost X amount, and you say yes, do it, you APPROVED
of the work for X amount of money. You can always say NO.
And look for for an independent shop that likely will cost less.

 

They hope you are a typical uninformed owner who does not know what the maintenance schedule in your glovebox recommends. They hope you do not know their recommended fuel system flushes are not needed. They hope you don't know the mileage interval for coolant system drain and fills. They hope you don't know the difference between a drain and fill and a more expensive flush. They hope you don't know the service advisor is a commissioned salesman usually without mechanic experience.

The service advisors are really no different than the new car salesmen who add $2k worth of paint sealers, tint and floor mats. You get everything you agree to but the extras may be overpriced or simply not needed.