Prius (2004-09) :: Transaxle Disengaging / Hybrid System And ABS Warning Lights

I have a 2005, I purchased new in 2005. I now have around 120,000 miles and have had no problems - just oil changes and new tires.

I was driving on the interstate in MS and all of a sudden all these lights come on on my dash including the triangle that means take it to your dealer immediately. The car sounded funny acted funny and accelerated funny. I was closer to home so I came home and called the dealer. They said to drive it in but if it started acting up to pull over and they would come get me.

When I cranked it, it sounded like I was pushing the accelerator but I wasn't so I cut it off then cranked it again. I drove it very slowly cause it was acting weird.

I drove it home to discuss it with my husband and to do some on-line research here. So 2 - 3 weeks later my husband decides to look at it and by now the little battery is dead - it is the original battery too -btw. So I bought a new toyota battery (the little one). My husband hooked it up to see if the car would crank. It did but all the lights on the dash lite up again including a couple new ones!

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Prius (2004-09) :: Transaxle Overheating And Causes A Warning On The Dash

My 2004 Prius Transaxle overheats and causes a warning on the dash. When I checked the fluid level I found pink foam in the resevior. Do I need to replace the fluid or bleed the system. Also the AC shuts down when this condition occurs.

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Prius (2004-09) :: AC Stops Blowing Cool Air / Dash Lights Up With Numerous Warning Lights

I had just picked my kid up from school, as I turn out of the parking lot my A/C stops blowing cool air, I check the A/C screen and it still says it's set on High with temp at 68. However, it is blowing very low with warm air. Seconds later the dash lights up with numerous warning lights. I'm on the highway and I'm able to gather speed, but each time I do I hear the engine revving like crazy. We only live a few miles from the school so I am able to make it home. Once home, I turn off the car and turn it back on. The only warning lights displayed now are the red triangle and the yellow check engine light. I turn the car off, pop the hood, I check the belt and it was fine. I checked the oil and it seemed fine. I check the coolant overflow and it was empty.

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Prius (2004-09) :: Transaxle Oil Leaking A Little Bit

My mechanics found today when the car is on the lift, that the transaxle oil is leaking a little. I can see the fresh oil there (not dipping though). He said to open the transaxle and change the gaskets probably will cost $300.

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Prius (2004-09) :: Shaking / Vibrating From Transaxle?

I have an 08 Prius it has done 190,000 miles last week it suddenly started shaking from what felt like the transaxle. The car still drove and seem to shake a lot worse when it was in park or reverse it definitely felt like it was a bearing or something mechanical broken in the trans unit. After a bit of research I decided to remove the trans, strip it down and have a look convinced that I would find fragments of bearing or something blatantly wrong. Yesterday I removed the unit (nothing to be scared of, dead easy really) and today I have stripped the transaxle down (after viewing a very useful youtube video) much to my disappointment I cannot see anything wrong I am now thinking I was a bit too hasty and maybe it could be something else.

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Prius (2004-09) :: All Warning Lights Came On

When I turned my Prius on today, the following warning lights remained on:

red "BRAKE"

yellow "ABS"

yellow "VSC"

yellow exclamation mark inside a circle inside parentheses.

It drives fine. After driving it a bit I tried turning the car off and back on a few times. The lights still remain on.

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Prius (2004-09) :: All Warning Lights Go Off

Mine did. I was driving on the highway and pretty much every warning light went off. It was like the space shuttle crashing back to Earth. Freaked me out. Cruise control stopped working also. But I was able to get home safely.

So first, I tried AAA just to see if the guy would know something, but it was way over his head. He did notice my aux battery was failing, but not much else. Then I found a service online that comes to your place to do the work, and they sent a guy out on a Saturday and he read the codes, and did a full visual inspection, and yes, something was up with the cooling system. He suggested I have the dealer look at it because flushing the system is VERY important apparently. Should be done every 50,000 miles.

I was so worried it was the hybrid battery; we all know what that means! So I had the car towed to the dealer (don't drive if your Master/Hybrid light comes on!) and they said, indeed, the pump was gone. And, of course, they found a number of other things included the dying aux battery. It took them 4 days to get the damn part in stock. At least they covered the car rental for me.

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Prius (2004-09) :: All Warning Lights Came On

The other night, went to start the prius and nothing happened except all the warning lights came on! So took the foot off the brake pedal and sat there for a minute trying to figure out. What the heck happened?? Tried a couple more times and then suddenly it was fine and it started! Now I have to mention that the outside temp was around 16*,,, not sure if that could have caused this strange reaction?

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Prius (2004-09) :: Warning Lights Lit On Dash

I bought a toyota prius 2008 few weeks back. ave done only 2500 km. Today I received few warning lights on the dash of my car.

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Prius (2004-09) :: Getting Some Warning Lights Intermittently?

Two days ago the first sign of a problem was the AC going out, followed by the red warning triangle and check engine lights coming on about 10 minutes later. Checked coolant and topped oil off (it is due for an oil change, btw) and drove about 20 miles home, no problems despite warning lights. Even the AC started working again. A little while after getting home, I started it up......no warning lights. I thought all was good.

Yesterday, no issues. Didn't drive more than about 15 miles though.

Today, took roughly a 25 mile roundtrip with no problems. Made the exact same roundtrip about 2 hours later and the red warning, VSC, brake system and check engine lights all came on (see pic) about 10 miles into the trip. I immediately turned AC off to remove that stress. No changes in car's behavior, however. Made it back home, turned car off and waited about 20 minutes. Turned it back on and only the red warning and check engine lights came on. 2 hours later....same two lights are still on.

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Prius (2004-09) :: Transaxle Disengaged Hybrid System Not Working

Car was deemed a total loss. I didn't think the damage was too bad and one of my friends at a bodyshop told me to go ahead and do a car buy back that I can't go wrong with a prius. My mother said $20 gas a week. So I did and gave my mom the difference. The Car drives going forward and in reverse just find. Besides the body damage I got underneath the car and I see a bent tie rod end and maybe a lower control arm. The thing is when I hop inside to move the car I notice the car reads transaxle disengaged and battery system won't charge in neutral.

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Prius (2004-09) :: 2010 - Whine On Transaxle / Fluid Change

I have a 2010 Prius and need to change the Transaxle fluid. I have the Haynes repair manual, but it only shows the drain and fill plugs for the Gen II. I have found what looks like the drain plugs but am not sure of it. Fill appears to be right next to the CV axle and the drain is straight down from the CV axle. Are these the correct fill and drain plugs?

Also, this transaxle seems to have a whine to it. Whines only at kind of a neutral throttle. Throttle pressure or backing off on the throttle reduces the whine. Is this normal or what?

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Prius (2004-09) :: Inverter And Transaxle Coolant Cross Contamination

My 07 Prius is leaking transaxel fluid into the inverter cooling system. Transaxel fluid is sweating through the inverter coolant hoses. Before my taking ownership of this vehicle, it had previously been in a front end collision (that’s a whole other story). Anyhow – if I replace the radiator, should that take care of this problem? Are there any other ways these two cooling fluids could become cross contaminated?

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Prius (2004-09) :: 2007 - Sludge On Transaxle Drain Plug

Recently replaced the transaxle fluid on my 2007 Prius with 47,000 miles. This was the first time the transaxle fluid has been changed in the vehicle. After removing the drain plug I noticed a substantial amount of a thick, grease type substance on the bottom of the plug. When they have change the transaxle fluid on their vehicles? I found minimal metal shavings on the plug, but was concerned on the thick sludge/grease substance on the bottom of the plug. The ATF fluid that I drained was very dark. Definitely not close to the red color of new ATF WS fluid.

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Prius (2004-09) :: Red Triangle / ABS / VSC And Battery Fan Kicks On - Transaxle Slippage

I have replaced a bad module in the HV battery and balanced it. Inverter coolant pump has been checked and inverter coolant has been replaced. Engine coolant has been drained and refilled. (Both coolant jobs followed Haynes manual guide including bleeder valves.) Transaxle fluid is full.

After each step of troubleshooting I have done a test-drive. Warnings come on consistently within 2-2.5 miles, day or night. I do not have a scan tool, but I do have the trouble codes from Toyota (all prior to my repairs). Is it possible that a bad ECT sensor could trigger all of this?? Is there something else I can check?

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Prius (2004-09) :: Warning Lights Came On - Disappear After Restart

My wife has a 2007 Prius with approx. 110k miles. We installed a new 12V battery approx. 1 1/2 year ago at 81k miles. A few months ago (Mar/Apr), her dash would randomly display the warning lights shown in the 1st image: Brake System, ABS, and VSC (the TPMS light is always on due to faulty tire pressure sensors and appears unrelated).

The car seemed to be driving normally with no abnormal behavior. Whenever this happened, my wife would pull over, turn off the car, and restart - at which points all the warning lights would disappear.

Even though our 12V battery is relatively new, I did check the voltage of that battery using the MFD's on-board diagnostic screens as explained by other posts on this board. Voltage was within the normal range with the HID lights both on and off.

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Prius (2004-09) :: Three Warning Lights Came On But No Difference In Driving?

So I was driving and suddenly three warning lights came on. The Master warning light (Red triangle with !), Check Engine Light and the Hybrid System warning light (Car with !).

My AC works fine and I was able to shut it off and start it back up with no problem. I also did see a difference in driving.

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Prius (2004-09) :: Warning Lights In Cold Weather - Car Seems To Run (mostly) Ok?

It has been cold recently (out of the past week, highs in 20's or lower). This hasn't been as much of an issue before, but in the past week I have had the red triangle of death, brake warning light, check engine light, and VSC light all come on at the same time, three separate times. Also, the display screen shows a red outline of a car with "!" through it. Each time this has happened, the lights didn't come on as soon as the car was "Ready" but only after the gas engine was running for a minute or two.

The first time the lights came on, I was driving back from class, but after I got back to my house I did some internet research and saw it may be a low oil indicator. Checked the oil, it was almost at the bottom mark on the dipstick, and it had been over 10,000 miles since the last one (oops! we don't normally do that). After reading some stories online, I took it in to get an oil change, and the lights went off for a couple days. Second time the lights came on, I checked the oil level, it was definitely over-filled, so I took it back to Walmart and had them redo the oil so that it was at the right level. I checked the oil level before leaving the parking lot that time and it was at the top mark on the dipstick. Again, all the lights were off for a couple days.

Today, I drove my car for about an hour in the morning (temperature was around upper teens, wind chill below 10) and had no problems. Then, this evening I turn the car on and start driving out of the parking lot when the car beeps at me and flashes all of the warning lights again. I drove back to my house and it is now sitting in the driveway. I am not planning on driving it until I can have a car mechanic friend take a look at it on Tuesday, but he doesn't know anything about the hybrid system/battery.

My wife and I have also noticed that since the weather has been colder, the hybrid battery (shown on the "Energy" screen when driving) seems to be charging and discharging much faster than normal. I haven't seen it at only 1 bar or full of green bars more than a couple times in the 2.5ish years we have owned the car, but in the past two weeks it has happened 5-10 times (estimated). I am not sure if this is due to the weather, or if it could indicate a problem with the (hybrid?) battery. For obvious reasons, this makes us nervous :/

As a side note, I changed the transmission fluid sometime in December, so I was wondering if possibly I didn't put enough fluid back in. I have checked the diagnostic screen and found some codes, but most of them seem to relate to the audio, which doesn't concern me as much as the code that seems to indicate the transmission, which is why I mention the change I did a while back. I just don't know why it wouldn't have shown up until now. I'll attach some pictures I took tonight of the codes and lights.

Also, the battery is a couple years old, but after sitting for a couple hours the battery was reading 12.1 V according to the diagnostic screen, so I don't think that is the issue. We haven't had any trouble getting the car to start, and once it is running it still seems to drive normally with the warning lights on. What these codes mean, and a possible cause for the warning lights?

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Prius (2004-09) :: Few Miles After Car Go In Neutral / Warning Lights Came On

I have a Gen II 2009 Prius with 31K miles on it. I love my Prius and until now had no issues with it. Last Saturday when I was driving on the highway, the following lights came on the dashboard.

1) Master Caution Light

2) VSC

3) ((!)) 'electronic brake malfunction'

4) Check engine light

The car seemed to be handling fine, and I kept on driving. However, after a few miles the car would go in neutral, I would need to stop before it will let me drive. I got to where I needed to go and then had the car towed to the dealer service shop.

The dealer came back and said that the water pump for the inverter needed changing (it was under warranty) plus the 12V utility battery also needed changing. They saw the DTS codes when the connected their computer to the car. I have my car back and other than the price of the battery had a really good experience with the dealer service center. They were prompt and efficient. Also it seems to me that car is driving more in the electric mode with the engine coming on less. Just my impression.

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