Prius (2001-03) :: Only Rear Brakes Engage When Pedal Pressed
Aug 13, 2012
I purchased a 2001 Prius with 123K miles about two weeks ago. I knew the HV battery was shot when i purchased it. I decided to see if I could rebuild the HV battery on my own.
I'm very mechanical but not the brightest bulb in the room when it comes to batteries and anything electrical.
So here is where I'm at so far:
- I removed the HV battery.
- safely rested it on 2 horses (I used horses because it would give me easy access to the bottom to remove the bottom screws)
- Removed all 38 modules from the battery pack
- cleaned the busses in vinegar
- inspected each wire that connects between buss and the nut.
- tested each battery ( one of the batteries tested at -0.1, the others tested at 6.8)
- I don't know how to load test the modules, so I couldn't tell if they would drop dramatically under load, so I ordered 38 used replacement batteries off of Ebay. (Gen II)
- these replacement modules were about a half inch longer than my original modules.
- The replacement modules arrived. I cleaned the terminals, tested each one and installed them.
- Connected the battery back into the prius.
- Installed new 12V battery from the Toyota dealer.
- The Prius started right up.
- Drove it around for the first time for about 10 minutes.
- When i was driving it, the monitor in the Prius would show the engine running most of the time but sometimes it would show it charging the HV and other times charging the 12V. the engine would shut off at stop lights and resume when I pressed on the gas pedal.
- while driving back into my driveway, all of the warning lights came on and the battery fan kicked into high gear,
- I can't remember the code I pulled but it was in reference to the cells being out of balance I think. I'll have to check it again tonight when I get home.
- I removed the HV and tightened the nuts around the busses hoping the issue would be resolved.
- I was able to drive it only a few minutes before the issue returned.
other issues I noticed.
While waiting for the replacement batteries to arrive, I did the following:
- changed the cabin filter
- did an oil change.
- changed the tranny fluid and removed the tranny pan to clean out the slime and clean off the magnet.)
- changed the rear brake shoes.
- changed the front brake rotors and pads. ( they were in awful condition due to sitting so long)
***when I pressed on the brakes, only the rear brakes seem to engage, not the front. I never attempted to bleed them because I know only the dealer can do that)
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I have a 2001 toyota prius. When I start the car and press on the gas pedal the engine rev's but nothing moves and there is some clatter from the engine. I can put it in B mode and drive it a short distance, but that's it.... The engine light has been coming off and on for a week now. It makes a loud audible tone and then I turn it off and back on and then it stops.
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Ok, did an intake manifold cleaning on my 99 Accord the other day, and now I have problems...
Long story short, some time ago my car started to have a very rough idle. Took me awhile to find the problem. Turned out the air hose, between the filter and throttle body, had developed a big hole on the underside. So I replaced it and while I was at it used some throttle body cleaner, spraying into the intake manifold chamber. Lot of junk blew out the tailpipe. The car ran much better, but the idle could still be a little rough. I ran it that way for awhile, and finally the other day decided there was probably still some junk in there and it was time to really clean it out. So I took ff the throttle body and intake manifold housing. There was a lot of junk in there! The small intake on the passenger side was completely clogged shut. (I understand this isn't surprising on these cars.) I used a bunch of rags and 2 cans of Valvoline throttle body cleaner and a lot of elbow grease and cleaned it out. I was thinking to myself that whatever I didn't get with the rags flushed through OK, but I didn't want to take the whole intake manifold out.
So I put it all back together. (I took a video before I started, so I'm pretty sure it's all back together right.) But now I have problems. The car starts. It idles fine mostly, but can be a bit rough. But the trouble starts when I put the pedal down. If I do it in Park, well, if I push it quick the engine just dies. If I push it slow, the engine revs then quits, revs and quits, over and over. Similar if it's in gear. If I push it hard, the engine stalls. If I push it gentle, it revs up, but chugs along a bit.
I've run some seafoam through it, thinking it was clogged up with all that junk, and sure enough, lots of smoke comes out, but nothing is improving so far. What have I done wrong?
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This morning my brakes seized up on me on the freeway. I noticed it when I pressed the brake pedal and I it would barely go down. Then, I could smell the brakes. I pulled over and there was a strong smell from the brakes and I couldn't press the brake peddle down any. I waited a while and let the brakes cool off and then they were fine. I got the rear brakes replaced at the dealership earlier this year.
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I own a 04 Grand Cherokee and have recently had problems with my passenger side brake light. Now the light itself does work under normal running light conditions, but when I go to press the brake pedal it doesn't engage the bright brake light. Drivers side works fine and so do all my other lights, I replaced the bulb to no avail, and am now currently looking into replacing the bulb socket.
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Ive got a 2011 Sonata GLS with 111k miles. I purchased the car new. For the past several months the brakes make a crunch or creaking sound when the pedal is being pressed OR released. The funny thing is it only happens when driving forward. When I apply the brakes while reversing, the brakes are silent. I did a pad slap at 68k and have taken everything apart, cleaned and re-lubed to no avail. The sound can be heard at the front wheels when someone else works the pedal while the car is parked. Pads have about 50% thickness. Pads? Calipers, master cylinder?
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The brakes will not engage until the brake peddle is at least 1/3 of the way down, resulting in a big delay in time to stop. In stop and go traffic it is very dangerous. I have to actually "ride" the brake in rush hour traffic in order to be ready for a quick traffic problem as this brake system is very slow to respond. This is obviously a safety flaw in manufacturing or design but it must be fixed as its not a matter of if an accident will occur but when will it occur. I test drove another LX 570 and found the same brake issue with that unit as well.
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This problem just started the other day. I park in a very slightly inclined garage and now when I get into my car in the morning, the brake pedal is so stiff the brakes barely engage and the car will actually roll until the engine turns over. All other braking behavior is completely normal while driving and it only occurs if the car has been sitting overnight. Doesn't seem to happen if it just sits for a few hours.
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I was wondering if this problem is the "Barking" noise that keeps coming up the search or is it another problem. I will include a link to the video down below.
To start off, the Prius is 2010 Prius II and has 120k miles on it. Great Car. Only other problem was AC compressor dying at 90k.
The chirping noise happens when the brake pedal is pressed and does not go away until the release the pedal. It makes the noise regardless of whether the car is on or off.
It makes the noise when the car is stopped and or when the mechanical brake engage at between 0 and 6 mph.
Noise does not occur when the brake switch is removed. Not valid solution since the brake lights will stay on. It does not affect the performance of braking.
Here is the link to the video .... .... ....
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Today I faced another problem i just try to start my car but, due the dead 12v battery it didn't start so i pressed the BRAKE PEDAL until it reach the bottom, again i tried to press but its not going to the bottom why was that, is it due to dead battery? And last time i called an automobile expertise to jump start my car. They check the voltage with a digital multi-meter and he said me if you jump start even you will get this problem again until u replace the new battery. but i said him it doesn't matter do a jump start and finally it was ok . Now again I faced the same problem and this time i am going to change the battery.
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I have a 2001 Ford ZX2 with 170,000 miles on it. The clutch pedal doesn't engage the clutch until it is almost touching the floorboard. I thought it had a hydraulic clutch being a 2001 but I can't find a reservoir for the fluid so now I must assume now that it is a mechanical clutch.
1. Does they hide the reservoir on these ZX2's?
2. What could cause the clutch issue?
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I have Toyota Prius 2006 with about 58k miles. For the last 12-16 months I encounter the following problem: when I press brakes, I hear knocking noise. It doesn't happen every time, but when it does it only happens when I press the brakes. Once I brought my car to a Toyota dealer and waited for an hour until my car was taken for a service. Mechanic found no noise. I tried to produce this noise but my car didn't want to cooperate. I don't see any messages on a display screen. It happens with power on/off and pressed brakes. What the knock is and how to get rid of it?
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I've bought a brand new 2012 Prius C 3.
This morning I was trying to back out of a parking spot and put it on a reverse after starting my car. As soon as I my car started moving forward and hit the curb right in front of the car. I couldn't believe my eyes so I put the gear back to Parking and back to reverse, and as soon as I touched gas, it again accelerated forward.
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Its a 2005 model with 45000 miles on the clock, so low mileage for the year. The problem with it is the engine starts up ready fr a journey, and as soon as the accelerator pedal is pressed, the engine cuts out.
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I have a 2010 Prius and have been driving several for the past 7 years.Yesterday, I was driving on the Expressway at 60 mph and all of a sudden I was momentarily stuck at 60 as if I was in Cruise control which I wasn't. Gradually, I was unable to accelerate when I pressed down on the pedal, lost speed and cruised over to the side of the road as if I was out of gas which I wasn't. I shut the engine off, waited a minute and started up again. I continued on my journey without a problem. When I reached my destination I shut down the engine and re started 4 hrs later and drove home 120 miles without a problem. What is the cause of this and is it still under warranty. I have 50,000 miles on the vehicle. May I add, this is the first problem ever encountered.
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I have a 2001 Prius, with disc brakes both rear and front.
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I've noticed that when I'm stopped, or in park, and I push on the brake pedal hard I hear a squeak or chirp that sounds like it's coming from the wheels. It might even sound like someone is honking at you as if you were not going when the light turned green. I have not been outside the car when this occurs, so I don't know exactly where the sound is coming from.
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My 2010 with 110k is now making a single yet audible "click" sound when I accelerate off of the line. It makes the same exact sound each time I press the brake pedal at speed. Just one click, not a continuous clicking. What's wrong??
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Today was the second time I have walked into the garage and heard my Prius making a weird noise. It's not the noise that comes from the front when you open the door or press the brakes....It's coming from the rear of the car. It stops when I press the start button. I made a video of the noise (nothing to see, as it was dark in the garage, but you can hear the noise.
My concern is that it's something running that will wear down my battery if I happen to not notice it is doing it sometime in the future.
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Is it normal for the Prius's brakes to make a low-pitched squeak (kind of like something wet rubbing against something, or a burp), when I press it semi-deeply and release? The only reason I'm worrying is that I ran over a camouflaged flat metal object on the road today while changing lanes, and it could've weighed anywhere from a soda can to a heavy shovel -- it clunked against the bottom of my car loudly, then got propelled into the air and barely missed a car behind me. It seems trivial but I'm paranoid because I just got the car (used, great condition) and that happened on my first day. I don't remember if it was squeaking before the shovel incident. My girlfriend says her 3rd gen prius does it too but I have yet to verify it.
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We have a new 2015 Prius with 6k on it and we are noticing one solid brief single click when the brake pedal is pressed and/or released. It doesn't happen every time (just some of the time) but it is only noticeable at slow speeds.
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