115,000/120,000 Mile Service Ideas and Recommendations

Hey everyone, new member here! I have a 2013 Prius Plug-in Base and am approaching 115,000 miles and was curious about what preventative maintenance, service and replacements I should perform. What can I ask to be checked or have replaced to maximize reliability? What are some common failure points?

At 100,000 miles, I got new transaxle fluid, fuel system cleaning, an oil change, hybrid fan cleaning and checkup. spark plugs, and everything recommended from the dealer.

1. To start, I was told that I was losing a good deal of tread on my tires and that I may need new tires soon. I have Ecopia EP422 Plus tires, but the interesting thing is that it has only been about 35,000 miles for them, and they have a 70,000 mile warranty? Is there some way to make a warranty claim that they ran short?

2. I was told my front shocks and struts were seeing wear and should be replaced soon by 117,000 miles or so, and I do feel this too as I feel handling has taken a bit of a hit, as well as that I have scraped the car once when going up a curb ramp.

I heard from someone that even the front struts/shocks could be quite expensive at one shop, and I am not sure which parts they use. I don't know where to find OEM parts for the front strut and shock assembly if anyone knows.

Right now I am eyeing the KYB 4245 and KYB 4246 Strut-plus. I don't know if I also need to get a strut mount for these (KYB SM5665) or a stabilizer bar end link/bushing (Ultra-Power K750043), but I have heard that I should. Would these be good?

3. I don't know if it is worth it to go for the rear shock absorbers (KYB 349035) if I didn't hear anything on them being bad or worn last time.

4. I have also heard that it is wise to replace the inverter cooling pump and fluid as they may also fail at a certain point and cause a serious headache.

5. I also heard it is smart to refresh brake fluid due to water collection problems in the brake line and causing wear on components as well as reduced performance.

6. I know that I am at least going to get an oil change and a full inspection when I go to the mechanic within the next few days, and also have them update me on the urgency of the shocks and struts as well as the tires.

Does anyone have any advice on any of this or about what I should ask to get checked, what I should get done, or any other smart preventative things to do with approaching 115,000/120,000 miles?

Edit: I should also note that I like to run premium fuel a lot in my car as I believe it can help me keep parts of my fuel system cleaner.

 

My family and I have had it for five years now. I estimate we have put about 60k miles on it since.

 

That's very good to know regarding the tire warranty. I will give it a try! It was from Costco tire center and I still have the bill.

Since your reply, the oil change and inspection has been done. It was found that my rear driver shock has a small leak, but it is not urgent and the car is still safe for the road as stated. I asked about the coolant pumps and they stated it was good to go still. They also ran codes, and saw nothing of concern or impending failure. Still, I will get a quote, but I expect around $300 for both shocks including parts and labor.

As for the intake manifold and EGR cleaning, I will inquire about it and find out details. I am not sure if it has been done already, as I'm sure I had full service at 100,000 miles from the dealership. I'm not sure if they did that though.

The ride quality is very smooth overall, but handling feels a bit poor. Almost like a boat. However, after the oil change, brakes felt a lot better and more responsive. Perhaps they bled the fluid. Still, I will inquire and ask about the brakes again.

Regarding the premium fuel, that is good to know.

As for driving, I barely use EV mode. I will get the EGR/intake manifold cleaning inquired about. I drive about 4,000-5,000 miles a year since I purchased the car from family a little more than a year ago. Before that, it was driven around 12,000 miles a year.

Thank you for your in-depth response and for every other response. I learned a good deal and am more aware of what to look out for now.

Edit: My mileage is now at 112,300.

 

One other thing, my engine air intake filter was also replaced during the oil change. It was found to be very dirty.