Prius (Gen 3) :: Hybrid System Overheat Warning Light Comes On Regularly
Jun 26, 2014
Last summer I had a catastrophic experience on a family vacation when my wife's 2012 Prius overheated on the highway and lost power. The dealer that we limped into kept it for a week and couldn't find any concrete problem, except to say that since it was a salvage vehicle rebuilt without Toyota brand parts, that all of the cooling system would need to be replaced. I waited until we barely made it home and had my mechanic replace the inverter pump.
Since then the "hybrid system overheat" warning light comes on regularly, especially when driving up a long climb, even in moderate weather. There are no codes. Is it possible that there is air in the lines? My mechanic says that it feels like the inverter pump is working, tho I don't see turbulence in ready mode. A link to bleeding the air?
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I've got some issues with my 2005 Toyata Prius (~150,000 miles). My wife was driving recently and the "Master Warning Light", the "Hybrid System Warning Light" and the yellow "Brake System Warning Light" all came on.
Some quick reading of the owners manual said we should take it to a dealer right away, but because it was a yellow, and not red, brake system warning light it seems ok to drive at least to a dealer. in regard to the yellow brake system light the manual said it could be that: "the regenerative brake system failed or that the hydraulic brake system failed".
Now, I have a cheap bluetooth OBD reader hooked up to the "torque" app on my phone and I thought I would try to see what error codes there were to learn more. But strangely, it did not read any fault codes. I've used this reader successfully on my 2001 Mitsubishi galant, but I'm not reading anything for the prius in this case. I'm not sure if there is legitimately no error code associate with the warning lights or if my app is just failing to read them for some reason.
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My wife just called and said this light came on. She said when it came on the car turned off its cruise control but kept running. Now she says it seems to be running fine but the light is coming on.
The car has around 110k miles and I just replaced the spark plugs, air filter and engine oil about 1k miles ago. What it could be? I'm going to have her pull codes at the auto parts store but she needs to do about 20-30 miles of driving today for work. Is it safe for her to do so?
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I was driving to work yesterday and all of a sudden the "Hybrid System Warning Light" just came on the screen. I didn't notice anything different and drove it the same way. However, when I checked the energy monitor screen, the battery was low on charge. It came back to normal in about 5 minutes, but the light is still lit up.
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My 2007 just came due for an oil change a week ago (Maint Reqd stays on), not that it matters. Yesterday the Red triangle of death, Check Engine, and brake warning lights came on. We drove another 15 minutes (city) without incident. When I turned the car back on the brake warning was off (and has stayed off) but now the Info Display has the red Hybrid System Warning Light also showing, along with Mr. Triangle and Check Engine.
This morning Autozone read out the P0A93 (confirmed) and C1300 (current) codes for me. With the car "Ready", I can see fluid movement in the inverter coolant reservoir (not sure it qualifies as "turbulence") and feel vibration in the line connected to the pump which is humming so quietly. The 12V battery shows 12.5V with the car off and 13.5V with the car on. Does this mean the inverter is still operating? (I read the P0A93 code is supposed to shut it down.)
I did find the ICE coolant reservoir dry and refilled it with SLLC. There looks to be a small leak in the water pump, but I'll deal with that later.
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My hybrid system warning light came on last night in my 2005 Prius with about 89,000 miles. The car may have run out of gas (I wasn't driving). This car will only take about 8.5 gallons when the fuel light starts flashing. I started it this morning, light was still on, only 2 bars on battery, my car usually runs near the green, and the gas engine stalled after about 30 seconds. The gas indicator was flashing, so I added a 1/2 gallon I had at the house, and unplugged the 12v for about 10 minutes to clear the system. Upon restarting, fuel light was still flashing, but no hybrid warning light. Drove a few miles, filled up with gas, and drove another mile.
So my question, could running out of gas and driving a very short distance (light came on as my wife turned into our driveway), cause this warning light to come on? If so, will there be any lasting effects? Did unplugging the 12v battery clear the computer codes, or can I still get these read to learn more about what happened?
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I have a 2005 Prius with 135k miles. Yesterday the red exclamation light came on and also the hybrid system warning light. I shut the car off and it came on again. The third time the car started normally and it is driving normally today with no warnings. Does this sound like the 12 volt battery? It is original.
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I have a 2003 Prius with just over 116,000 miles. When my wife cranked it a couple of days ago, the "Hybrid System Warning Light" came on.
As advised by the owner's manual, we didn't drive the car. We took it to the local dealership to be checked out. When I called for an update last night, they said that the computer indicates that the hybrid battery is leaking.
So I guess my questions are:
1) What kind of lifespan is typical of a 1st Gen Prius?
2) How many more miles are reasonable to expect from the gas engine?
3) Is there anything I should be aware of to make sure I'm not taken advantage of? (eg is there a credit for the battery since it has valuable components)
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I was on my way home (a 50 mile trip on very rural roads) when my hybrid warning light came on. The car seemed to be operating fine, so I continued on. About 20 miles from home, the computer display lights flashed on and off and the car died. After coasting to a stop, I let it sit for a couple of minutes and turned it back on, and continued on. Warning light was still on. Probably ran about 7 miles or so and died again. This same scenario happened a couple more times, but I did manage to get home.
My Prius is a 2002 with a little under 150000 miles on it, and it has never given me any problems since I bought it at 70,000 miles four years ago. I will be calling the Toyota dealer tomorrow, but I wanted to ask whether or not this sounds like a possible battery pack failure.
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I have a 10 month (15,000 mile) Prius and the " check hybrid system" warning light came on while driving on the interstate. 17 miles later the car quit running. I had it towed to the local dealer and after taking a looking at it I was told the error code pointed to the water pump (which they plan to replace). Does that make since? Has this been a problem for the Prius IV?
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A few days ago I was driving my 2005 Prius aggressively up a mountain road and all at once the hybrid system warning light, the triangle with the exclamation point, and the regenerative brake system warning lights came on.
After about 2 minutes parked, I restarted the car and the regenerative brake system warning light went off, but the other two were still on. I still drove it twenty miles home, over another substantial mountain gap (about 1000 ft up and another 1500 down), without any problems.
I checked the voltage of the 12v battery, which seemed to be on the low end, but OK. (I think the lowest reading was 11.9). There seemed also to be some turbulence in the inverter coolant reservoir.
I brought it into the electronic vehicle specialist in town here today, who pulled my codes and said that the hybrid battery was dead.
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On my way home from work tonight, the master warning light and the check engine (malfunction indicator lamp) appeared on the dashboard, and the hybrid system warning light has popped up on the multi-informational display.
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I have had no issues with this car of 120K miles until today, although my MPG has decreased to 35 MPG. The following lights came on with a loud beeping sound : Brake warning lights, malfunction indicator light, master warning light and the hybrid system warning light. These stayed on for 25 minutes and then went off. I drove 12 miles without any issues with all the lights and sounds beeping.
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Gen3 Prius. Once it turned 100k miles I took it in for an inverter coolant change per the maintenance schedule. The dealer charged $109 for this and the car had absolutely no issues prior. Got the coolant changed on 7/23 and then drove it short distances in town for two weeks with no issues. Once I drove it on weekend longer road trip got a check engine light P0A93 "inverter A cooling system performance". Shortly there after started getting hybrid overheat alerts and pulled over to let it cool.
I checked the inverter coolant reservoir and it was still above full. After letting things cool, I turned it back on and listened to the water pump. Seemed to be running fine, heard it clearly with my ear up to a long screw driver, touching the pump. Noticed that the hose leading to the pump was vibrating but the return hose out of the inverted was not. Also no turbulence in the reservoir. My guess is that they didn't bleed air out of the system.
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I was trying to install the invisicord cable for my escort radar detector thru the auto dimming/homelink mirror, I shorted it and homelink no longer has any power, a couple minutes later i got a check hybrid system.
Now question how do i restore power to the homelink mirror, is there a fuse to replace? And that warning and all the other warnings that i got related to the short. I read somewhere here that if power to the homelink mirror was off that you get no power to some systems, not sure where is that post, cant find it the car starts.
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I jumpstarted a friends car and now I'm getting a check hybrid system warning and my 2010 prius won't start.
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I was going through a bad day today with my 2010 Prius Gen 3. I was on highway driving at 68MPH behind another car, at the time I step down on gas pedal for overtaking, all a sudden both "Check PCS system" and "Check Hybrid system" appears on the Console display and gas pedal had no response from the engine at all. The car was not moving and I had to stop aside and "P" the car. I tried to turn off the car, turn back on more than 10 times. Both warning signal "Check PCS system" and "Check Hybrid system" display on console and the car can not go into "ready" mode hence the car can not drive. I could put shift to "P","N" but just not "D". Had to call tow truck to tow back to toyota dealer, and they said will look into it on Monday.
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Just started up my car and the "Check Hybrid warning system" came on, along with a check engine light. The car starts and moves, but I'm unsure if I should drive it to the dealer two miles away without doing any further damage to the vehicle or have it towed. The car has 130000 miles and is serviced every 5000 at the dealer with all recommended maintenance performed.
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We bought a used Toyota Prius 2012 with about 35,000 km in early August 2015. We shipped it overseas. It gives the "Check Hybrid System" error when we try to start it. All the lights and instruments work o.k.
I've read this car be a problem if the car is parked a long time, which it was as it was mostly in a shipping container.
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Went to the market, and my 2010 Prius II with 56K miles won't start.
Display works with the "Hybrid System Warning" message, but nothing else works.
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First off I have a 2010 with about 11,000 miles and it has been running great since I got it. This morning I was greeted with the "Yellow triangle" and the "check hybrid system warning". The car started fine and I pulled out of the garage under battery as usual and then the engine kicked in also as usual, everything seemed normal except for the warning lights. Since I have a long commute I just took my wife's car and got to work and did a forum search on this issue. I called my wife and had her turn the car on and off three times and she said it cleared the yellow triangle and check hybrid system but it still had the check engine light on. She also said the car seemed to be running fine and shes driving around town in it. I couldn't find anything on the check engine light. Is it ok to drive it?
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