Prius (2010-12) :: Traction Is Lost On One Front Wheel When Braking
Dec 29, 2011
I don't see any mention of the role of the transaxle differential. Others have correctly pointed out that regenerative braking acts only on the front wheels, but it also important to note that the regenerative braking torque is transmitted from the transaxle to the wheels via differential gears.
Thus when braking traction is lost on one front wheel (due to a wet manhole cover, bump or whatever), braking torque is also lost on the other front wheel. The effect is a noticeable instant of "no braking" and takeover by the ABS. Or perhaps the driver takes over by pressing the brake pedal further and activating the hydraulic brakes (this should happen instinctively, and quickly since the driver’s foot is already on the brake pedal).
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I slammed on my brakes the other day because a car pulled out in front of me. When i let off the brakes i noticed the car did not move for a good 1-2 seconds and a traction control light was flashing. I didn't think much of it until i was sitting at a light and decided to see what happens if i press my brake pedals in hard again... the traction light turns on again and the car doesn't move when brakes are disengaged for a few seconds. Is this normal? It feels like my hill assist on the BMW. Why the traction light turns on? My car is a 2010 Prius III with 5k miles.
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Tonight I needed to stop at a red light. The distance to the light was on the short side, so I braked somewhat firmly - but not hard like a panic stop. The road was dry but somewhat bumpy (I think it had some patches across it from some digging that'd been going on.) But it wasn't so bumpy that you wouldn't just drive normally on it. When I braked, the car kept on going. I saw the traction control light come on, and eventually the car stopped at the light. But if there'd been another car ahead of me, this might not have ended well.
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As in lunge. I first noticed this about two months ago (I bought the car three months ago) when I was braking on straight, level ground, but it was raining and I was crossing railroad tracks while I was braking. Fortunately, no one was in front of me. The sensation wasn't merely a loss of braking traction (sliding), this felt like a momentary, power mode/full throttle thrust. Straight forward. At the time, I was clearly caught off guard, but the effect/sensation was quite momentary, almost as if someone had mildly rear-ended me.
Braking after that moment was normal. The effect didn't replicate itself again until recently when I was braking for a stoplight on a sh-tty concrete road where the sections have a slight tilt to them. This is exaggerated of course, but the sections are like this: ///////, meaning there is a 1/4 to 1" dropoff from one section to the next. there is one particularly pronounced dropoff close to the stoplight. The effect happened again and it is reproducible. Again, it is not merely the sensation of taking your foot off the brake, but one of a momentary punch of acceleration. No appreciable sound of higher engine revs.
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2005 Yesterday the ABS, VSC and (!) lights came on when I accelerated hard out of a right turn and momentarily lost traction from the back tires. In addition, the parking brake light came on and won't go out whether or not the parking brake is engaged. I had the car towed to the dealership, and I"m waiting for them to look at it.
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I have a 2003 Buick Lesabre Custom, 146K miles on it
1st problem was that the passenger front wheel bearing went bad, I replaced it with a new bearing from Napa(cheaper one) drove it 1 day everything seemed fine, next day it was raining, and Traction control and abs light came on and continues to do so almost everytime I run the car. My Mechanic friend said this was a defective wheel sensor and that i should get a new one, I do not know if I should get the better one, every time I've ever changed the wheel hubs I have had this problem except when I use the more expensive hubs. Maybe I answered my own question on this one!!
Today when my wife was driving the car, the Service engine Soon light lit and it started bucking and shuddering going uphill, and it threw a code that said that TCC was stuck etc. I had been running the failing hub for a few weeks prior to this with no problems but when I changed this the other day, I started having problems.
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My wifes 2008 Front Wheel drive Saturn Vue recently lost all forward motion. The Drive & Manual gear positions resulting in nothing happening. Reverse gear works fine. Is this a programming issue in the transmission or am I looking at a larger problem?
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I've got a 2010 3rd generation Prius II with about 38k miles. Earlier today when I was driving around town the car suddenly started making a sort of grinding sound, metal-on-metal sound.
To cut to the chase, I think I've narrowed it down to something in the front right wheel. When I got home I put the car in park and had someone rev the engine. The sound didn't manifest, so I think this rules out the engine, belts, etc.. It doesn't seem to appear until the car gets moving. Almost right away, even at low speeds, the sound crops up.
I had someone drive the car very slowly down the street as I walked around the car to try to pinpoint the location of the sound, and I'm fairly certain it's coming from the front right wheel. It's present even when driving straight, so it's not strictly related to turning, although it is audible when turning as well.
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Heard popping noise right front when wife pulled in driveway. Leaving Monday on 1290 mile trip to Erie,Pa. Took to dealer to check out noise. This is result. No hassle at Dealer at all.
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I hear this clicking/ticking noise on the driver side front wheel or somewhere there whenever i reached 40mph and up. Car drives straight and no weird anything, just the noise.
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Our 2011 w/140,000 miles has a variable front end noise that I suspect from past experience with other vehicles is a bad wheel bearing. I've seen posts of the procedure for replacing the Gen 2 bearings that requires the hub and bearing be pressed out and new bearing back in which would limit the DIY'er, but looking at the replacement parts diagram for the Gen 3, it appears that the hub and bearing unit is bolted in with 4 bolts and may not need a hydraulic press to install.
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Unfortunately I broke off one of the wheel studs on the front drivers side of my 2010 Prius. I got a new stud from Toyota but I'm not sure exactly how to put the new one on. Looking for any steps on how to replace a front wheel stud? Not even sure how to raise calipers/remove rotor (if that's necessary to replace stud)....
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Ok, so I leave the fire station this morning headed home and my steering felt weird. About 1/2 mile from home I hit a bump and my drivers side front wheel started making a screeching noise. I stopped and looked out the window and it appeared fine. I limped home and as I pull in the driveway, I lost all my steering. I look under the truck and this is what I found.
Not sure what to do. This is my daily driver and neither of my 2 mechanic friends will answer their phones.
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2007 SF SE 3.3, approaching 60,000 miles. I'm feeling a front steering wheel shimmy on "heavy" braking, as in a recent trip into the Adirondack mountains with twisty roads.
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Was about three blocks from home when the front of the car started making a horrific metallic scraping sound as the front wheel turned. I mean LOUD. Did a quick look for something stuck in the wheels somewhere but nothing. It's not like a branch stuck in the wheel sound, but scraping a shovel on a steel beam kind of sound. Braking seems to change the makeup of the sound, but did not stop it. Parked it in the garage.
I pulled the left wheel off, looked and looked, and looked. Nothing. Fear and sadness setting in. Everything looked normal....except....a faint line on the rotor very near the inside edge. Got a mirror and looked some more, and there, wedged on the inside edge of the pad's metal part and the rotor, was a rock the size of a bb. At most. Got a small screwdriver and hammer and popped it out. Done. Sheesh.
Seriously it was so loud it was amazing. So store in file folder for future reference if needed.
The line can be felt barely with a fingernail and is half the width of a pencil lead, and goes under the innermost 1/8" of the pad. I'm thinking do I want the dealer to pull and turn it, or is it going to affect my braking at all. Pretty much gonna leave it be I think.
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So whenever I brake while reversing (and rarely while moving forwards) I hear this odd grinding noise coming from the front left wheel and can feel it through the brake. Im not a petrol head but I decided to replace a wheel bearing hub myself recently to save money. I am pretty sure I reconnected the anti lock brakes correctly though I doubt it's that. My brakes are good.
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I have a 2002 Camry, and recently on the passenger side towards the front wheel there has been a fairly persistent thump or clunk when I brake at low speeds (i.e. immediately before a full stop). I took it to my local mechanic yesterday to see if he could figure it out, and unfortunately he wasn't, although he did point out that my dog bone was cracked and suggested changing that out. Afterwards, the thump/clunk did seem to be more subdued, but it's still obviously there.
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Heard an noise coming from the front of the car when in reverse turning wheel and braking only happens when im braking and make some turns not all turns.
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2006 SAAB SUV AWD, Right front wheel rubbing/grinding. When cold, coasting and braking. Not continuous. It has completely died while turning. New tires all around. Had both front brakes replaced x2 in 2 years. Still rubbing feel in right front.
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My 2010 RX 350 only has 35K miles and I've been feeling that the smoothness in the ride has really deteriorated in the last several months. So much so, that even though I could have squeezed another 5K or so out of my tires, I bought a new set...OEM Michelin Latitude Tour HP. I can't say the ride has improved at all. Today, I brought it to the Lexus dealer for a brake inspection, because I was getting a slight vibration in the wheel when braking. Front brake job was needed. I was given a 2013 RX 350 as a loaner. The ride in that car is so much smoother. Should I be questioning the suspension or some other issue that would improve the ride?
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This is my first year driving my prius during a hot season, and for past 3 weeks my mpg has dropped from 49 to 41-43 mpg, and the reason is my traction battery keeps getting HOT! I can hear the battery cooling fan turning on constantly at max when i reach 20 mph, my car doesn't want to start in EV mode the engine just kicks in no matter how light you press the throttle, the EV motor is not assisting with the engine, the infamous slow rpm drop keep occurring and I when to touch the traction battery case and it its HOT, Ive open up the case to check for any dust on the fan and ducts but so far its spotless. I really wished they place an AC vent for the battery because the back passenger area with full A/C doesn't t get as cold as the front dose which doesn't cool off the battery.
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