Prius (2004-09) :: Louder Hum When Pressing Power Button And Brake Pedal
May 14, 2012
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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I have a 2007 Toyota Prius. When I press the brake pedal and press the start button the engine does not start or the wheels are not powered by the battery. It gives me the following errors:
The indicator in the Start button lights in Amber Color.
0 kmph mark is not activated in the dash board pannel.
When I shift the gears it only shifts to neutral ("N") gear.
I cant move the car forward or backward. An error message is displayed in the MFD in Japanese language. It is in Japanese and I cant read the error message.
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Bought a 2004 GX470 a few months ago. Took it into the local Toyota dealer for oil change (40+ miles to nearest Lexus)
They told me I needed to replace front brake pads, so I did that. Immediately after they finished I noticed what I would describe as a clack or clank sound when pressing or releasing the brake pedal.
This sound was not there before. I went back inside and told them, the tech came out and listened and said it would probably go away. I took the car back in a couple weeks later and they applied some type of lube which didn't work. The service rep said that the only way to remove sound was to replace some type of pin.
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2011 Prius with 30,000
At the first start of day when I pressed on brake pedal and got the green light on power button as usual I pressed power button and never got ready condition, trying to figure out what is happening I have had this condition occur almost every morning (outside air temp around 40 degrees F) also when I went to train station to pick up my daughter I shut off for about ten minutes and it happened again.
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A few things that annoy me right now. Brake pedal squeaks when I press it. Like I'm killing a mouse. The steering above 65 is twitchy, just like all my other Prii, the AC sucks on hot days, the left lower seat bolster digs into my left thigh, there is a rattle somewhere.
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I made a scary discovery the other day, or I should say, my son did... Apparently, you can shift the lever out of park, reverse, any gear without pressing the brake pedal first! 06 GX with 77k ...
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I had 2 brake related issues. First was a honking noise when pressing/releasing the brake pedal (covered by T-SB-0363-10, attached below). Second was rear brake squeaks, particularly when backing up (T-SB-0102-11, attached below). I had the squeak issue repaired under a previous TSB a few years ago, but the noise came back after a while, and the updated TSB includes replacing the pads and other parts.
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After putting my front end back together except new springs, new shocks, and new track bar, just to give everyone a little history of what I've done to it. I've had it for 8 months and maybe put 1000 miles if that because of working out of town a lot and the front end torn apart. I've noticed a louder roar coming from the rear end when taking my foot off the accelerator without pressing the brake. It feels like the tow button is engaged, but isnt. I have no issues with handling besides knowing it still needs alignment. I'm taking it to the dealership tomorrow for a 4 wheel alignment. It sounds and feels like I'm riding on mud terrain tires.
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I Learned on a Toyota Avalon web page that you can force your audio system to reboot itself by pressing the power button for three seconds. On the Avalon, it only works on the "Limited" levels. I tried it tonight on my Prius Four and it worked. Great to use when your audio gets "confused" and you just want to clear it and start over.
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Getting a clunk feel and sound while pressing the brake pedal? If I press harder, another clunk or two occurs. Felt and hear especially at low speed or stopped. No issues braking, but the clunk has slowly gotten worse since I dropped the car on RSR Downs which could be a coincidence.
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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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First off, I would like to say that I really like how the engine rolls in my 06 Passat 2.0T. Suspension is great and the brake works well...so far. What worries me now is the persistent white noise I get in the cabin when the engine is on, driving or idling, EXCEPT when applying brake.
I took it to the dealer 2 times for this reason. The first time, the rep swore that he could not hear the sound and made a crazy person out of me. The tech wrote in the report that there is no problem. The rep explained that it is the sould of air circulating back (what air?).
So, I took it to an independent mechanic, the one I have been taking my other cars to (Nissan, Infinity, BMW) for the past 5 years or so. He readily heard the sound and identified it as vacuum leak.
I took the car back to the dealer and asked them to check, and it came back to me that the booster performs as per design. It is true that I haven't experienced any loss of brake power yet.
Meanwhile, the sound is getting stronger (and I don't think I am imagining it all, either). Now I have to turn on the radio or CD to muffle the noise.
(Now that my venting and ranting is done...)
Also, if it really is a vacuum leak, does it generate a code? So far, I have not seen any check engine light or check brake light and matchign description appear on the dashboard information console.
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Do I have to press a button on the ultimate lockpick every time I want to use the navigation while in motion? If I do have to press a button is there any module out there that will allow me to use the navigation while in motion without having to press a button?
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2003 echo , automatic, 168,000 km's
When I press the brake pedal when in the car is in PARK , I can hear a click in the plastic transmission housing beside your knee, where you change gears. It clicks when you press and clicks again when you release, almost sounds like a relay clicking. It only happens when in park, not in neutral or drive or reverse. It seems to click right when the brake lights go on and again when they go off.
Possible shift lock solenoid or control unit?
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On Monday evening my wife left our 2010 Prius Gen III without pressing the "off" button. She took the keys with her and she claims that she locked the car.
On Wednesday morning I noticed that the dashboard panel was switched on and I deduced that the Prius has been running all the time, with the ICE engine kicking in now and then to keep up the Hybrid battery level. A quick call to my dealer confirmed this, and also the fuel consumption average was in line: 14 l/100 km on a 20 Km trip (my average is 3.9 -4.2 l/100km...).
I was very surprised to discover that the Prius does not switches off when the key is removed (i.e. taken far away from the car). This seems to me a sort of engineering flaw.
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On my MPG display if I push the steering wheel button once, I see actual MPG and the numbers jump all over the place depending on how I am driving. Push the button a 2nd time I see avg mpg, push it a third time and I see range how many more miles I can go.
If I push the button a 4th time I see "- - -?".
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So this has already happened to me a 2nd time so far.
I depress brakes and hit the power button once when I first drive it in the morning after the Prius has been sitting for a while.
Instead of the power LED turning green, it turns red/amber, and the ready light does not show up blinking or come on at all. To me it almost appears to be in IG-ON mode.
I hit the power button again (can't remember if my foot was on the brake) and all the accessories shut down/car shuts down and I see the shifter indicator on the screen.
I then try to start again by depressing brake and hitting power button once. Now everything starts up fine and the ready symbol is there.
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I have 03 f250 v10. just replaced the engine and got everything all connected and started it up and it idles great...the problem is that when you press the gas pedal it starts to drive but then it looses power and acts like its missing. cant get it to go 30 mph. While keeping it floored eventually it gets up to 2000 rpm and then starts to pick up speed.
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I've never used "foot parking brake" on any of my cars before. The one I have has a standard automatic transmission when I put in "park" the pin inside the transmission locks it.
Do I just press the "P" park button or press the "foot parking brake" first?
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Before putting the kid in the car seat I like to turn on the a/c (in my previous car I would open the passenger side front door and turn the key). According to the manual, pushing the Start button twice will activate all the electrical. But no cold air is coming out in my Prius, just fan. Not till I depress the brake.
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My 6'4" hubby just got in my PriusV 2012 to use it and when he tried to shift into reverse, the parking brake was on and the anti skid icon lit up. It would not shift into drive. When I got in to see what was going on, after he turned it off, everything worked fine for me. It has never done this before but he rarely drives it. Is it possible he was mashing the regular brake pedal down too hard? He wasn't hitting the parking brake getting in or anything like that, I watched when he tried a second time.
We kept trying but he ended up taking his truck instead (which I was washing for him) I know on a couple occasions making fast, hard turns into our driveway I have lit up the anti skid icon but other than some extra braking action it has not caused a problem. And once while stopped at a light and reaching for something in the back seat, I lit it up, but I forget what the car did. I was mashing the pedal down hard as I reached back. I assume in both cases the car thinks I am getting in a wreck and is taking action.
Of course, I just finished washing it but there is no chance it's anything with that? I moved it from the front yard to the back and had no issues before he tried to use it. Anyway, I had this thought about pressing the pedal too hard after he left and here I am asking.
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