Prius (2004-09) :: Little Movement In Brake Pedal At Stop Light And All Lights Came On
Jan 27, 2013
2005 with 110K miles. Had oil change about 2K miles ago, tires rotated about 1K miles ago. I was at a stop light when I felt a little movement in the brake pedal and the lights all came on. Brakes continued to work, but somewhat harder to push the pedal. When first applying the brakes, there was a very slight wandering of the car, which was easy to correct.
I drove the car home and turned it off. About an hour later I started it and the problem was gone. I took it to an independent garage the next day. Their scan tool found C1357 -- decrease pressure solenoid fault -- but could not go further into sub codes. They recommended that I take it to dealer.
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I was going down the highway at 70mph and came up to a toll booth when the brake pedal went to the floor and the car wouldn't stop. I hit the pedal hard and the car stopped in a very jerky manner as if the abs was initiated. I looked at the dash and the ABS, (!), and brake lights were illuminated. I turned the car off and then on again and the lights were off and the brakes worked normally again.
The Toyota dealer in CT said the weak battery was causing an under-voltage at the stroke sensor and replaced the battery. They told me if I lost my brakes again (!) I should bring it back for a new stroke sensor. In hindsight, I should have just told them to go ahead and replace the sensor. Two days later, driving down Florida route 301 in the rain, a stoplight went from yellow to red in about 3 seconds so I hit the pedal hard. The back brakes immediately locked up, the front wheels kept rolling, the car swerved and slid through the red light intersection sideways.
I counter steered and slid between two cars at the other red light, on the wrong side of the road as I straightened out. The car swerved and slid sideways again in the other direction and then spun around so I finally wound up in the correct lane, and I drove off like nothing happened. I was doing maybe 35-40 at the time and it's a miracle no one got hurt. Again I look down and see the lights illuminated. I cycled the power switch as before, and again the problem went away.
About an hour later the problem came back and this time no amount of power cycling will clear it. Basically what I'm understanding now is that it's the regenerative side that doesn't work with the bad sensor. The hydraulics kick in at around the last 10% of the pedal so the car will still stop, but I have to floor the pedal and that makes the car think your trying to lock up the wheels so it initiates the ABS system which makes stopping jerky and unpredictable. BEWARE the stoke sensor!!! What a dangerous design!! The dealer has the car now...
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2003 - I tried to change the brake fluid with a MityVac. I've done it to dozens of cars with no problem. With the Prius it didn't take it well as I have to pump the pedal sometimes to stop or the pedal goes way down. Only now I read about how a special Toyota scan tool is recommended to do it. Is there any other way? I only really did the front brakes since after trying one rear wheel cylinder and getting nothing out of it, I quit. The dealer wants $165 and I'm sure that doesn't include any extra shop fees and such they tack on. What other way can I try before taking it in?
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I drove my 2005 Prius 2 hours and parked it for 5 hours. No problems on the trip down. I got back in it and it started up just fine. I was sitting in the parking lot with my foot on the brake (hadn't moved yet) and the following occurred:
The brake pedal seemed to push back on my foot
The red exclamation point illuminated
The yellow exclamation point illuminated
The ABS light illuminated
The VSC light illuminated
The red parking brake light illuminated (not shown)
All of these lights point to the skid ECU. It seems like my skid ECU is toast or something called the ABS & BA & TRAC & VSC Actuator is an issue (never heard of it but I see it connected to the skid ECU). I did a visual check of what I could and everything seemed in order. I pulled a bunch of fuses and I didn't notice any that were blown. (I didn't pull them all but will tomorrow)
After not finding anything, I drove back home. As expected, I had no regen but the bigger problem was that I had no power assist on the brakes. A few times I actually did skid and the car brakes really bad without regen or power assist. If it was raining or snowing I could definitely see a hazardous situation.
I'm kind of at a loss here. Tomorrow I'll pull the kick panel down and see if the skid ECU is getting power but I can't think of anything else that would cause this situation.
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From the first day i bought this car i had a strange noise coming under the hood. Every time i leave my car for at least 2 hours parked and then started, when i do a few meters i hear a noise like a hydraulic valve comes in place and my brake pedal does a small movement. After that everything is normal.
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The switch for the parking brake pedal light self loosened (a known issue with this switch) over the past six months and today it finally fell off the pedal assembly. The only way I can see to do the repair is to remove the three fasteners that attach the parking brake pedal assembly to the dash and drop the pedal to the floor to refasten the switch. It appears to be possible; however, there are lots of stuff around the assembly that might get in the way of dropping the assembly so I raised the white flag and called it a day.
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I am looking at purchasing a used 05 gx. It has about 109k on the odometer, a lengthy carfax report showing that the maintenance has been kept up since day 1. It's a one owner and is very clean. While borrowing the car for an afternoon I noticed two issues that is causing hesitation.
While stopped at a light I kept getting feedback in the brake pedal, like a light thump in a pattern of two at a time.
The second, and this might be normal? While examining the outside of the car with the engine running I heard a sound at the rear of the car by the rear wheel. It sounds similar to a compressor, maybe for the air ride suspension. I checked the height control in the car and it was set to "N".
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In my 2008 F150 with 108,000 miles, I am having a vibration in the brake pedal. When I am stopping or at a dead stop. I first thought it might be the rotors needing to be turned, but the vibration seems to go away when I turn off the a/c.
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My Gen I Prius is screeching at me with the BRAKE and ABS lights on, and I hear the electrically actuated pump pulsing as it tries to get pressure into the system. The pedal is spongy and will go all the way down, with the right amount of exerted pressure from my foot.
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2004 with 214000 miles. Brake pedal goes to the floor, red dash lights are flashing, I just added a container of brake fluid and still no pressure at the pedal. I'm guessing master cylinder.
My question is: Even though my brake pedal goes directly to the floor, how am I getting the car to stop at the very end of the push? Do the brakes somehow work as a fail-safe even the the hydrolics are basically toast? I know that's a long shot, but it wouldn't be the first time I've been shocked over systems in this car.
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I have a 2010 Prius Hybrid and lately, on an intermittent basis, I will press the brake pedal and push the start button and the dashboard lights up as normal but when I go to put it in gear nothing happens. The last time it happened the fan was running and I couldn't turn it off. It's like the car is all set to go but all the interior controls don't function. I then shut it off and restart it and everything works.
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I am the owner of a 2009 Accent L (Canadian model) sedan. I have had this car from brand new and I have had two warranty issues with this car in the last 6 months. First at approx.36000 miles (60000Km) the stop light switch started sticking, so the brake lights wouldn't work properly. The second issue was the turn signal/ headlight combo switch malfunctioned and started to smoke. The dealer replaced these under warranty after some hassles.
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i have the brake (!) the ABS and the VSC lit up after i got new bearings and new brake pads and rotors, the car was also stalling before the mechanic removed these bearing "dust cover" circles that must have been causing speed sensor interfernce bc the spedometer was stuck on 0....so the car seems to be done stalling after those were removed and all the big lights went off then i hit the brakes a few miles later and those three lights came on...
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My friend has a prius and had her brake pedal sawed off modification. Funny cause she says that her foot is always slipping off the brakes now. It was always a bogus fix, to fix nothing caused by errant drivers.
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I have a 2008 Prius. Had to do an 'emergency' stop. Put my foot on the brake pedal REAL hard and the car slowed way down, but not down enough. Munched the front end. Now remembering back, I didn't feel any 'chattering' from the ABS brakes. It seems like I got regen braking but never switched to the hydraulic brakes. Is that possible? Did I experience a braking failure? Or do Prius just take a lot longer to stop? I did a test stop in the rental car I have now (not a Prius or hybrid), and it gives me the ABS chatter as I would expect, with a short stopping distance.
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I have another small issue with my 2004 Prius. I just noticed yesterday that the second I very lightly depress the brake pedal, a little clicking sound is made down below. It sounds like it might be coming from the brake pedal itself or somewhere underneath the hood. It's only when I depress the pedal slightly and it makes pretty much the same sound when I release the pedal. I just had a 5000 mile service done to the car and there were no issues then.
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I can press on the brake pedal when car is off or on and there is a kind of quirky sound made. I can hear a pump sound and then a squeaking or quirky sound. It happens every time I press the pedal when it is stopped, either on or off.
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So I noticed this has happened a few times.. If I press on the brake pedal too hard, the indicator light will come on and then turn off a few moments after I depress the brake pedal. This has happened when the car is stationary as well as when I was coming to a stop, it's happened maybe 5 times since I picked the car up a few weeks ago. Is this normal behavior or an indication of a problem? Just an FYI, I'm not talking about when the indicators light up when first starting the car.. This is tied strictly to pressing the brake pedal hard.
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I've a UK 2004 gen ii with 69000 miles on the clock. When coming to a stop and also when at a stand still if I press down the brake pedal I get a rather loud creaking sort of noise. I guess that's friction brake related as no noise with using brakes when driving. Also a high pitch squeal when driving and turning steering wheel slightly to the left that stops when you press the brake pedal.
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2005 Prius, 50K. Newly purchased two weeks ago. Last night, driving into my garage with the ICE off, noticed a noticeable electric or electronic-sounding hum from the engine compartment. With the hood up and looking toward the engine from the front of the car, noise comes from the right side of the engine compartment, to the right of the inverter cover.
The noise, a loud hum, appears when pressing the Power button and the brake pedal. It also appears when pressing the Power button twice without pressing the brake pedal. When starting up the car, the hum lowers in pitch significantly (though not in volume) as soon as the Park button is pressed.
When I bought the car, I brought it in to the dealership for a complete checkup. They replaced the inverter coolant pump under the recall notice. Don't know if that's significant. I opened the coolant reservoir cap last night with the motor on, and noticed movement inside, so it appears to be working fine.
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A few days ago, while on a road trip from CA to CO, I noticed a loud squeak from the engine compartment every time I pushed the brake pedal, no matter how lightly, no matter what speed. It even happened when the car was off. I have almost 60K miles on my '05.
When I arrived in Denver, I dropped the car off at a Toyota dealer for troubleshooting. They isolated the fault to a bad ABS actuator. They had to overnight the part, and spent a day and a half installing it. Sounds like a major project!
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