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Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 08:38AM
... my dealership, where I routinely get service done (and has generally been very reliable and honest in the past), last time I brought it in (a 2014 Prius II), they said that the brake pads would likely need replacing soon. The car has only about 11K miles on it (!) and they said there was 4mm left on the pads.

From the little bit of Googling I've done so far, it sounds like this might be a scam on the part of the dealership. On the other hand, I've read that it may be due to things like rust, if the car is sitting around a lot without being driven. (Obviously, I don't do a lot of driving... mostly just commute back and forth from home and work.)

Anyone know about this kind of stuff? I'm not much of a car person...

TiA




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: freeradical
Date: May 22, 2024 08:47AM
How can a 2014 car only have 11K miles?
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 08:49AM
Quote
freeradical
How can a 2014 car only have 11K miles?

Because, as I said, I don't drive much.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: TheCaber
Date: May 22, 2024 09:00AM
I would start here: [www.priuschat.com]

I recently had to search for wiper blade sizes for a 2018 Prius Prime Plus (not in any user/owner manuals; not in any Walmart sizing guides; general browser search turned up mostly incorrect and useless info). This was where I was able to find useful info (driver: 28"/700mm, passenger: 16"/400mm)

Good luck!



=TC



Edited 1 time(s). Last edit at 05/22/2024 09:15AM by TheCaber.
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Re: Question for the Prius folks here...
Posted by: Acer
Date: May 22, 2024 09:05AM
My 2010 Prius burned through its rear factory brakes at 20K. i could hear the scrape.

I think the factory shims were spec'd wrong, and indeed there was an advisory for some VINs for the issue. But they refused to acknowledge any issues on my VIN.
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Re: Question for the Prius folks here...
Posted by: PeterW
Date: May 22, 2024 09:24AM
2014 Prius here with 72K miles. No visible brake wear as of six months ago. Unless you ride the brake pedal in traffic, it’s hard to believe you need brakes at 11K.



Edited 1 time(s). Last edit at 05/22/2024 10:46AM by PeterW.
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Re: Question for the Prius folks here...
Posted by: gabester
Date: May 22, 2024 09:43AM
Your commute is, what, 2 miles each way?
How many stop signs and traffic lights that you have to stop at?
I think the dealership is scamming you on this. They probably just tell everyone to do certain things.
Or the brakes may degrade in functionality over time to have insufficient stopping power even if there's still plenty of pad left? Or, as Acer said, some brakes were incorrectly installed/aligned and wear out too fast.



g=
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Re: Question for the Prius folks here...
Posted by: MikeF
Date: May 22, 2024 09:45AM
Have another mechanic check?
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Re: Question for the Prius folks here...
Posted by: Gareth
Date: May 22, 2024 09:57AM
If you're comfortable removing a wheel, it's easy to check for yourself (I believe the 2014 has disc brakes all around). If not, depending on the rims, sometimes you can stick a smartphone camera in far enough to get an idea (though this can be tough if you're not familiar with what you're looking for/at). But if you can snap a photo and post it, we can check it out.

I'm not a Prius owner, but with regen braking, I'd be surprised that it would go through brakes that fast.

I've never heard of brake pads rusting away (I'm not in a rust-prone area), but I guess it's theoretically possible, depending on the material (the OEM pads are likely semi-metallic). If they started to rust, they'd probably wear a lot faster. If that's the case, it'd be a good argument to put ceramic pads on next time.
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Re: Question for the Prius folks here...
Posted by: anonymouse1
Date: May 22, 2024 10:27AM
Get a second opinion. Brakes aren't rocket science.
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Re: Question for the Prius folks here...
Posted by: special
Date: May 22, 2024 10:46AM
How about the brake fluid? What type is it? Older types absorb moisture and need to be flushed and replaced periodically.
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Re: Question for the Prius folks here...
Posted by: Gareth
Date: May 22, 2024 10:55AM
Quote
special
How about the brake fluid? What type is it? Older types absorb moisture and need to be flushed and replaced periodically.

If the brake fluid has never been done, that should definitely be done (although the dealership doesn't seem to be saying anything about it, so it's possible it's been replaced as part of the other routine services that PeterB has had done).
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Re: Question for the Prius folks here...
Posted by: C(-)ris
Date: May 22, 2024 11:11AM
Short stop and go trips are worse than highway mileage for brake bads. They could easily be bad at 11k miles if you are all stop and go and hard on the brakes. Also easy enough to look at them and see as others have said.



C(-)ris
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 12:13PM
Thanks everyone.

Indeed most of my driving is stop and go, particularly because the lights here are timed to make you do that, and I do tend to have a heavy foot on the brakes because of the other drivers here. (Do NOT get me started on the drivers here!)

I'm sure brake fluid has been done-- I've brought the car in for routine maintenance at every point it's been due.

I'll see if I can snap a quick photo ... don't want to deal with taking a tire off, I'm supposed to be bringing it in for service tomorrow and that's part of why I was asking about this... in case they argue that I need them replaced.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 12:39PM
OK, I snapped a few quick pics... not sure how useful these would be, not exactly sure what I was looking for: [imgur.com]




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: Acer
Date: May 22, 2024 01:01PM
I'mma gonna spitball here, and see how close I am to others assessment. I don't see much room for pad in there. Looks thin to my eye. Is that deep scoring on the router, or just barely surface marks? can you feel the ridges with a finger?



Edited 1 time(s). Last edit at 05/22/2024 01:02PM by Acer.
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Re: Question for the Prius folks here...
Posted by: lost in space
Date: May 22, 2024 01:31PM
Can't see the pads, but it seems they're pretty thin. If this is the first replacement of pads for a 2014 car, I'd say you're doing ok, cost/mile wise. They'll probably suggest replacing the rotors too.

The rust issue is usually not with the pads, but on the rotors. They pick up condensation, especially if the car sits outdoors a lot and not driven a lot. The condensation causes rust on the rotors, and the pads grind against the rust, accelerating the wear on the pads. Just sayin'.



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Re: Question for the Prius folks here...
Posted by: special
Date: May 22, 2024 01:51PM
How are the tires?

Also 10 year old car, even if low miles, you need to consider if any of the engine belts need replacement.
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 02:53PM
Quote
special
How are the tires?

Also 10 year old car, even if low miles, you need to consider if any of the engine belts need replacement.

Replaced the tires last year.

I would presume they'd have told me if any of the engine belts needed replacement.

The scoring is, I would say, fairly superficial -- I can feel it with my finger, but they aren't deep gouges.

It could be exactly what lost has suggested ... the humidity here is insane, which I could imagine causes rust. (We've also had flooding to the point where the water has reached up into the tires...)




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: AllGold
Date: May 22, 2024 04:13PM
Quote
anonymouse1
Get a second opinion. Brakes aren't rocket science.

agree smiley

Prius brakes usually last about 100K miles because much of the "braking" is regenerative. But it sounds like you're really an outlier because of your driving situation.

Also, that generation, the 2010-2015, had problems with, and a recall related to the brake booster system. It is/was a multi-$1K repair. I believe the recall eligibility has past.
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 04:52PM
Quote
AllGold
Quote
anonymouse1
Get a second opinion. Brakes aren't rocket science.

agree smiley

Prius brakes usually last about 100K miles because much of the "braking" is regenerative. But it sounds like you're really an outlier because of your driving situation.

Also, that generation, the 2010-2015, had problems with, and a recall related to the brake booster system. It is/was a multi-$1K repair. I believe the recall eligibility has past.

If it had any recalls on it, I definitely did them...

I guess I'll see what they say tomorrow. I'm seeing some interesting information on PriusChat ... for example, some suggestion that all the pads are good down to 1mm, and that the rear actually ships as 4mm. So I'm wondering now if the dealership was only looking at the front ones, which apparently ship as 11mm.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: Speedy
Date: May 22, 2024 06:06PM
Quote
PeterB
Replaced the tires last year.

Tire shops usually check your brakes, too. Seems like the stealership just wants to screw you over. Take it elsewhere and save some money. Given your driving history I would wait until you hear metal against metal.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.



Edited 1 time(s). Last edit at 05/22/2024 06:08PM by Speedy.
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 22, 2024 07:44PM
Quote
Speedy
Quote
PeterB
Replaced the tires last year.

Tire shops usually check your brakes, too. Seems like the stealership just wants to screw you over. Take it elsewhere and save some money. Given your driving history I would wait until you hear metal against metal.

Got the tires at the dealership... in retrospect, maybe I shouldn't have, but I had no reason to disbelieve them when they told me that they'd had serious dry rot.

Let me see what they say tomorrow, then I might see an actual mechanic... just in general though, this dealership hasn't been what I would consider to be money-grabbing... generally, it seems they've only been doing really what needs doing with the car, over the 10 years or so that I've been going there.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: Forrest
Date: May 22, 2024 08:31PM
Ask the mechanic how your low mileage is affecting the health of your engine and battery pack. I think Toyota recommends you put a certain number of miles on the car per year.
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Re: Question for the Prius folks here...
Posted by: Speedy
Date: May 22, 2024 10:21PM
“Got the tires at the dealership... in retrospect, maybe I shouldn't have, but I had no reason to disbelieve them when they told me that they'd had serious dry rot.”

It was wise to replace 10 year old tires.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.
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UPDATE
Posted by: PeterB
Date: May 23, 2024 01:34PM
Back from the dealership. He said the brakes were fine, but that indeed the problem is rusting on the rotors from moisture, which is then leading to the scoring. Solution = drive more! smiling smiley

They also did the brake fluid, which he said was starting to look tinted.

I forgot to ask about the low mileage affecting the battery and/or engine, but again, if there were a problem with either -- they would have noted in the multi-point, which they didn't.

So... basically a clean bill of health. grinning smiley




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)



Edited 1 time(s). Last edit at 05/23/2024 01:34PM by PeterB.
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Re: Question for the Prius folks here...
Posted by: Acer
Date: May 23, 2024 01:54PM
My traction battery died at the end of COVID, 12 years into ownership but only about 130k miles. It was a tad early, 150k would be more typical from what I read. I think the two years of COVID-reduced driving on an aging battery put it over the edge.



Edited 1 time(s). Last edit at 05/23/2024 01:55PM by Acer.
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Re: UPDATE
Posted by: AllGold
Date: May 23, 2024 02:48PM
It's not good for the engine to only be driven on short trips. It needs to be driven on a longer trip (10+ miles) every once in a while. With only short trips, it could develop a "wash down" problem where the rings don't seal effectively and fuel gets into the oil.

As it is, your 2014 may or may not have been produced with a design flaw where the piston rings are inadequate. 2014 was the dividing line where they redesigned the pistons in the middle of the production year. You can tell by the VIN; the seventh number from the end will be either a 0 or a 1. A 1 means it was produced with the redesigned pistons.
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Re: UPDATE
Posted by: PeterB
Date: May 23, 2024 04:06PM
Quote
AllGold
It's not good for the engine to only be driven on short trips. It needs to be driven on a longer trip (10+ miles) every once in a while. With only short trips, it could develop a "wash down" problem where the rings don't seal effectively and fuel gets into the oil.

As it is, your 2014 may or may not have been produced with a design flaw where the piston rings are inadequate. 2014 was the dividing line where they redesigned the pistons in the middle of the production year. You can tell by the VIN; the seventh number from the end will be either a 0 or a 1. A 1 means it was produced with the redesigned pistons.

Oh, I do occasionally go on longer trips, just not that often. Unfortunately it does look like it's a "0" rather than a "1", but I haven't noticed any problems yet.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: UPDATE
Posted by: Speedy
Date: May 23, 2024 04:12PM
Great! I’m glad I was wrong about your stealership.

Quote
PeterB
Back from the dealership. He said the brakes were fine, but that indeed the problem is rusting on the rotors from moisture, which is then leading to the scoring. Solution = drive more! smiling smiley

They also did the brake fluid, which he said was starting to look tinted.

I forgot to ask about the low mileage affecting the battery and/or engine, but again, if there were a problem with either -- they would have noted in the multi-point, which they didn't.

So... basically a clean bill of health. grinning smiley



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.
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Re: Question for the Prius folks here...
Posted by: Speedy
Date: May 23, 2024 04:15PM
Quote
PeterB
The car has only about 11K miles on it (!)

When you go to sell it you might want to find a little old lady to front for you so you can get more money for it. Or advertise it as your mother’s car that you are selling for her.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 23, 2024 09:13PM
Quote
Speedy
Quote
PeterB
The car has only about 11K miles on it (!)

When you go to sell it you might want to find a little old lady to front for you so you can get more money for it. Or advertise it as your mother’s car that you are selling for her.

You'll pry this car from my cold, dead hands. Apparently the older Priuses (Prii?) are going for tons of money, everyone wants them.

The ONLY thing I hate about this car is the problem with the side windows not clearing condensation when you roll them down -- that's a serious safety hazard.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: AllGold
Date: May 23, 2024 09:26PM
Quote
PeterB
You'll pry this car from my cold, dead hands. Apparently the older Priuses (Prii?) are going for tons of money, everyone wants them.

All used cars are going for tons of money these days. Used Prii have always been in demand.

As far as your cold, dead hands, with your driving habits, you'd probably be a lot better off with a pure EV (although I don't know if you'd have a place to charge it at home).
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Re: Question for the Prius folks here...
Posted by: Speedy
Date: May 23, 2024 10:26PM
Actually, the demand for used cars has fallen off over the last year.



Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.
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Re: Question for the Prius folks here...
Posted by: PeterB
Date: May 23, 2024 10:53PM
Quote
AllGold
Quote
PeterB
You'll pry this car from my cold, dead hands. Apparently the older Priuses (Prii?) are going for tons of money, everyone wants them.

All used cars are going for tons of money these days. Used Prii have always been in demand.

As far as your cold, dead hands, with your driving habits, you'd probably be a lot better off with a pure EV (although I don't know if you'd have a place to charge it at home).

Nope, EV is out for me. I need to be able to drive in the absence of charging options in case of weather events. That's part of why I went for a regular gas hybrid in the first place.




Freya says, 'Hello from NOLA, baby!' (Laissez bon temps rouler!)
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Re: Question for the Prius folks here...
Posted by: AllGold
Date: May 23, 2024 11:24PM
Quote
Speedy
Actually, the demand for used cars has fallen off over the last year.

Good to know (I wasn't paying attention until a few months ago), but they're still pretty jacked compared to pre-covid.

Quote
PeterB
Nope, EV is out for me. I need to be able to drive in the absence of charging options in case of weather events. That's part of why I went for a regular gas hybrid in the first place.

238 miles of range isn't enough? Gas stations can't pump gas when the power is out either. 238 is for an older Bolt. Newer Bolts have another 20 miles more range. And then there are the Teslas and the other newer model EVs with greater range.

(Sure, I get it. 11 gallons in your tank gets you a lot farther, plus you can store extra gas in a couple 5 gallon cans.)
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