Prius (Gen 3) :: 2010 - Grinding Noise When Regen Braking
Nov 5, 2014
The topic is as much as I can say to what my car's problem is.
2010 Prius II with 50k miles now.
Nov 5, 2014
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Prius (2010-12) :: No Regen Braking While HV Battery Overheats?
I had my scangauge installed at the end of Oct 2014 so I haven't had the chance to use it in the summer. I have also done the the Intelligent Power Module (IPM) recall about 2 months ago. I have never noticed this issue before the hot weather.
When the weather gets hot, the regen gradually lowers the recovery amp. Normally it can regen at over -90 amps. As weather gets hot, it limits the regen to about -65 amps max. When it gets hotter, the regen lowers down to -35 amps max. I can feel the car not slowing down as quick as at -90 plus amps. When the car has been sitting under the 100f+ for a couple of hours, regen is completely at idle (less than -20Amps.) Mechanical brakes take over. The car feels the same as -30amp regen, HSI shows it is regen braking. However, scangauge shows idle regen (less than -20Amp) and the slowing down is done by mechanical brakes.
Prius (2010-12) :: Regen Braking Force Less At Higher Speeds At Over 45 MPH Or 70 KMPH
I have noticed recently that I seem to be getting less regen braking force than I used to. Particularly noticeable at higher speeds at over 45MPH or 70 KMPH. The regen seems to have very little effect now until I have slowed down. I seem to have to use much more brake than I remember recently. And by the way the battery in not nearly fully charged....Regen does come on but seems to have very little slowing power....
View 13 RepliesPrius (Gen 3) :: HSI (CHG) Bar And Regen / Friction Braking?
Prius III -- I do all in-town driving with display in HSI mode. When braking, I have naively assumed that the length of the CHG bar corresponds with regen braking capacity -- fill the bar and you're starting to add friction brake. So when stopping distances permit, I try to brake gradually enough to keep a bit of space past the end of the CHG bar -- means I'm playing with brake pressure the whole length of a typical freeway exit ramp.
View 7 RepliesPrius (2004-09) :: Ratchet Clank While Lightly Braking With Regen At 8 - 13 Mph
My 2007 with 58k on it started making the sound of a 'ratchet clankety clank' about at 56k while lightly braking with regen around 8-13 mph (slow and quiet enough to hear it best) and while turning slightly or more to the right. If I'm on a hill and can maintain the conditions, the sound will continue.
I've spent many a night searching here and elsewhere, learned a lot about strut and cv noises etc. At 57k I took it to a dealer who has a very nice service dept and they rode with me, agreed that they heard it, checked out the cv by hand (my first suspicion) and said all felt fine, that it was recorded at least (my concern being near 60k, std warranty).
Prius (2004-09) :: Burning Smell On High Current Regen Braking
This morning I noticed a strong burning odor, like burning wax. It only seems to occur on high current regen events (eg coming off the freeway). It also happens to be raining, although I'm not sure if that's part of the issue or just a coincidence.
View 5 RepliesElantra MD (2010-15) :: Grinding Noise When Braking
I recently purchased a brand new 2013 Hyundai Elantra and I have noticed that I sometimes when I brake fast but not fully slamming on them from going about 60-80km I hear a loud grinding noise. When this happens the roads are dry so I know that it is not caused by slippery or wet roads.
View 279 RepliesElantra MD (2010-15) :: Bad Gas Mileage - Loud Grinding Noise On Hard Braking
I bought a new 2013 Hyundai Elantra Coupe this past August and this is my first car.
My first concern was that Hyundai advertises 27mpg in city and around 37(?) for highway. I acknowledge the fact that Hyundai recently had to lower their mpg estimates for some of their cars and provide reimbursements but however, these reimbursements are for 1-2mpg difference. My car after more than 6 months is still only getting about 14-15 miles on a casual drive in the city and only about 19-20mpg combined and about 24-25 on the highway! I am only getting about half the estimate for in city! I do not drive aggressively. In fact I am a pretty safe driver since I am a new driver and cautious about everything. I am also using premium gas on my car. I called the dealership I got the car from and they were trying to tell me about the reimbursement program which I already knew of... The reimbursement based of the 1-2 mileage difference is not what I want. I want to fix it and get close to the estimated mileage as I can. What is the best way to go about doing this?
The other issue is that sometimes when I hard brake, my car makes a loud grinding noise. My dealership's service center said they could take a look at this. I was mainly wondering if there is anything I should be concerned about for this?
Prius (Gen 3) :: Metal Grinding Noise When Braking
I've read a few posts about the Prius braking system. Just wondering what other owners have done when they experience the metal grinding noise and when brakes need to be replaced. My car has around 67,000 miles. I was planning to take it to a Toyota dealer, although prefer to find a certified Prius or hybrid mechanic at an independent shop.
View 3 RepliesPrius (2004-09) :: Grinding Noise When Braking At Low Speed
Bought my Prius (2005, with 160K miles) about a month ago and since I've had it I am hearing a metal on metal grinding noise when braking at low speed. How loud the sound is depends on how hard I am on pushing on the brakes. One of my co-workers has the same model and said that his does not make that sound. Not sure if its just because it has after-market brake pads or something? This noise only occurs when braking at low speeds (below 10 MPH) so I assume its an issue with the front brakes.
Is this something I need to get looked at by the dealership? I had a local mechanic that worked on my old Honda beater take a look and he said that the rotors and brake pads looked new and wasn't sure why they'd make noise.
Prius (2004-09) :: 2007 - Grinding Noise When Braking
So my dealer diagnosed my 2007 Prius with a transaxle issue, but what bothers me is that it doesn't make the sound all the time. When I brake lightly, there is no sound and when I brake heavily there isn't either. It is only when I do a medium brake above 7 mph of course and around 20's mph range. I am hoping for something besides the transaxle...maybe a wheel bearing...anything.
View 19 RepliesPrius (2004-09) :: Grinding Noise On Radio While Braking / Accelerate
I may be worrying over nothing but lately when I brake or accelerate I hear a grinding noise on my radio. I listen to AM. With my other vehicle it usually meant there was a problem somewhere.
View 1 RepliesPrius (2004-09) :: Inverter Generator Grinding Noise When Braking Above 7 Mph?
My car was making a weird grinding noise when braking above 7mph. I did the neutral brake thing and seems to go away sometimes. The dealership said it needed new rotors and brakes, so I went ahead and did that with them, then called me to let me know the sound did not go away. Now they are stating my grinding noise is coming from the "inverter generator" which is what they said was the transmission. I am just curious why this goes away sometimes and if it's related to my previous issues with the car.
View 1 RepliesPrius (2004-09) :: 2008 - Braking System Makes Slight Grinding Noise While Getting Below Around 10 Mph?
Just purchased a used 2008 prius with 80,000 miles on it. Braking system makes slight grinding noises when getting below around 10mph. I know the brakes are different, so I'm not sure if this is normal or if it means my brake pads need replacing? Car didn't come with an owners manual .
View 6 RepliesPrius (2010-12) :: Loss Of Regen Brakes And Traction Assist
Just letting Gen III drivers know that using an OBDII splitter and two gauges can sometimes cause a loss of regen braking and traction assist accompanied by various yellow lights on the dash. It can be restored by switching the vehicle off, unplug the OBDII splitter and restarting the car. This has happened to me on three seperate occasions.
View 8 RepliesPrius (2010-12) :: Clunking Noise When Braking
Brought mine to the dealership they can't find the knocking noise. I asked the technician to Test drove it but still can't find the problem. Technician on the passenger side and we test drove it. He was able to hear it, but can't confirm if its coming from the pads or rotors. Its pretty anoying when driving at night when the roads are quiet. You can hear it even with windows close.
View 4 RepliesPrius (2010-12) :: Strange Noise While Braking And After Turned Off
I have a 2010 Prius which I have had for a couple years. I get this strange noise from time to time that happens while braking. It starts, it will do it for a while, and then go away. When it's doing it, It will also happen after I turn my car off when the engine does it's shutdown phase. Occasionally, when my car is not moving and the engine is off, if I push my brakes it will do it too.
The noise comes from the driver side, by the firewall. the noise is a loud rachety sound, and it does not sound healthy or normal. I took my car to the Toyota dealership 3 different times explaining what was going on, but since it is random in when it happens, they have always told me everything looks normal. (of course I am out of my 1 year warranty too I got when I purchased it used.)
Is this noise something I should be worried about? What it is? Last thing I want to do is burn out some component of my car when I can save it now.
Prius (2010-12) :: Clicking Noise While Braking In Right Turn?
Just recently my Prius has been making a clicking noise when turning right and braking at the same time. It only happens during a right while braking and not while stopping straight or left. I only have 27K miles on it. I'm not due for an oil change for a couple thousand miles and was going to wait until then to mention it to the dealer.
View 18 RepliesPrius (2010-12) :: Braking Noise As Coming To A Final Stop
The noise is not the usual vibrate noise that happens.
The Noise: As I brake harder to the final stop I hear a grind/bump noise. It is hard to describe. It is abrupt and quick. I don't believe it affects the braking just annoying and doesnt sound normal.
Prius (2010-12) :: Grinding Noise Near The Front Axle
So I was driving yesterday and I hear a grinding noise near the front axle. I pull over and a plastic panel is hanging off near the front of the car. I go to the family mechanic to have him put it back on, and since one of the clips are missing, he tells me to go to the dealer to get a clip and have them fasten the panel.
This morning I go to the dealership. The service advisor gets me right on a lift and comes back about 20 minutes later with a slip of paper. He tells me that the piece is the door from the under body plastic protection that protects the oil reservoir. There are no sides of it that seem to have been ripped off a larger piece, just holes to be screwed in. He tells me the whole entire piece needs to be replaced, end of story. He did not offer warranty coverage (I have 20K on the car) and was not interested in speaking to me further on the topic. The parts desk pulled up a diagram of the car and showed me the panel as part of one big piece underneath that needs to be replaced.
I am going to seek out another dealership on this, but I wanted to pose this to you all as well. First, do I even need to replace this small piece of thin plastic? Second, if I do, can I buy just this small piece and not the entire under body panel. I noticed some threads about the poor design of the oil door, and perhaps this is what this is? I do not have access to a floor jack or garage, so all of my service (free toyota care) has been done at this specific dealership. Here is a pic of the piece.
Prius (2010-12) :: 2013 - Grinding Noise When Making U Turn
What might be causing this symptom?
View 14 Replies