Prius (2004-09) :: Transient Warning Light Appear During Driving
Aug 17, 2015
I had a transient warning light appear on my 2008 Prius during a recent drive from the Portland, Oregon area to Seattle . The reason I'm posting this is that this icon isn't listed in the owners manual, nor does it come on when you start up (boot up) the Prius. Also this warning is on the same line as the "ready" and air re circulation icon. On the right side of the display ( the usual low pressure tire, and I think traction control warning icons are on the line below).
This occurred about 135 miles into my drive at the infamous Interstate 5 as you enter Tacoma, Wa ( stop and go traffic) the icon is yellow /Amber a box with 3 yellow squiggle lines which are vertical and cross just past the bottom of the box. After about 15 minutes the warning light went out. It never came back. I have 115k miles and car was recently serviced. I wonder if this is some air flow / ventilation warning. I am overdue to check cabin AF but am unaware there would ce a warning for that. The AC seemed just fine and no effect on the cars performance. Weird.
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The last 3 cold weather starts (30-40 degrees) resulted in somewhat of a hesitancy when the engine turned over - started on the first attempt, though. And - the last time - there was a very transient flash of a red warning indicator in the large computer screen/info center in the instrument cluster - too fast to read - then ran a little rough for the first 15-30 seconds.
I recently had the 40k service completed and everything checked out fine. I did some reading about the ignition coil recall, but my symptoms don't sound like they lend to their failure.
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I can't seem to find my manual, and I'm not sure if I should drive my car home after a warning light came on during my drive to work. It was a yellow exclamation point within a bracket. What this means?
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my much adored 2006 prius just got three warning lights as i was driving and slowing down at a light. The big red triangle- "Master Warning", the Brake System Warning, and also, the Hybrid System Warning. It was like warning lights galore... i'll bring it into the dealership first thing tomorrow, but any clue what's going on? I regularly maintain it. The only other thing that ever went wrong with my car is that the touchscreen quit working years ago, and i refused to spend the 3k for them to connect a silly wire. Why my lights went on and is this something serious?
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Yellow brake light turned on while driving in rain, then for some reason turned off. I had read somewhere this may be an indicator of wear on brake pads. I have a 90 mi. commute round trip, I will check again if this turns on and stays on. For now, it is off. what could be causing this?
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In my one-owner purchased-new 2005 Prius w/ 74K miles and w/ no maintenance/accident history other than doing all scheduled maintenances at Toyota Dealers along w/ recalls applicable at each time (other than we had Toyota replace the 12V battery last year just because I knew it would die at some point anyway and I don't like pushing my luck; I'm not 100% certain if there's been a recall on any water pump for this car and if so, don't believe the dealer has mentioned it), I have the following indicators which appeared all at once while I was driving along at around 45 MPH in no unusual circumstances (80F, dry afternoon, about 30 minutes into a trip of mixed speeds, no loads in the vehicle, no effect on the car while driving):
From Left to Right on the display:
1) Red Triangle - Master Warning Light
2) Orange (Symbol)CHECK - Malfunction Indicator Lamp
3) Orange (!) - Brake Warning Light (but it didn't highlight the word 'Brake' in red)
4) Orange VSC - Vehicle Stability Control Warning Light
On the Screen:
Orange Car w/ the ! symbol - Hybrid System Warning Light
We immediately aimed for the house (about 5 miles away); the car drove perfectly fine, with the engine stopping and starting at lights as needed, with speeds going from the 55MPH we were traveling at the time of the alarms down to 0 and back up thru 35/45 MPH and such per normal off-interstate driving. The battery currently shows all the blue bars, and the engine and hybrid systems showed charge/discharge as usual as we drove. There was no discernible change in the driving reaction of the car to brake, steering, accelerator, etc.
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But while driving the hybrid warning light turned on in the MTD. A red car if I remember correctly. It was the hybrid battery over heating and to try and mess with the wiring going to the cooling fan in the right rear quarter panel.
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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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I have a 2006 with 155k miles. I took it into the dealer for a mini service this week. Drove home after the service was complete, then drove to work yesterday. On the way home an alarm sounded and the red triangle light with !, the break system light (O) with !, the VSC light and the engine CHECK light came on.
A friend used his scanner to read the error code for me and it reported a "p0a80" code. What does this code mean? Replace the hybrid battery?
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My 2010 III's hybrid warning light illuminated today while I was driving, and the vehicle shut down almost immediately.
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So naturally I thought a nail had punctured a tire leading to a slow leak. When I got home I found no nail and the tire pressure on all four tires even but down to about 36psi.
I refilled to my normal of 40/38 and reset the TPMS with the button below the steering wheel. The light stayed on for a minute or two of driving then turned off and stayed off for my commute to work.
What I think probably happened is that I reduced from 42/40 to 40/38 recently without a TPMS reset. Then this morning the temperature outside was 55F and about 65F in my garage. When I left the garage at 5:20AM the TPMS light was off. I drive about 2 mile to the gym each morning and park my C for about an hour. This morning, when I got back in the car the tires had cooled to 55F and I guess that was enough to reduce the pressure far enough to trip my warning light.
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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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I was driving my 2006 Prius on the highway (120,000 miles on it). I'd been driving about 10 minutes and all of a sudden, the dash warning lights lit up.
Red triangle with exclamation point.
Yellow circle with exclamation point.
Yello check engine.
The car did NOT lose power. It kept driving fine with no noticeable change in how it operated. Fuel consumption stayed the same. Braking worked fine. I had a completely full tank of gas (had just filled it up before I got on the highway). Temperature outside about around 60 degrees.
I kept driving to my destination (another 20 miles at highway speeds). The car sat parked for about 3 hours. I returned to the car, started it up. The same warning lights appeared, except for the Yellow circle with exclamation point. Plus, this time I noticed on the energy monitor screen the graphic of the red car with the exclamation point.
Again though, everything seemed to be working fine. While the car had been parked for 3 hours I did some browsing through the owner's manual and saw a notation that is the warning lights were only yellow and not red that it was okay to proceed with caution to the nearest dealer.
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I was on the highway yesterday when the red triangle went off and the screen said Problem. I babied my 2008 Prius to the dealer. They said the 12v battery was bad. I should have just gotten the yellow top in last week like I wanted but oh well. Here is the problem, today it did it again. It first happened at 70 mph but today it did it first at 15 mph then pretty much stayed on until I did not accelerate for a while. No noticeable performance issues, just the warning indicator. I did notice the noises after shutdown are sounding different than before last week. I also put a code reader on it both without running and on a test drive and no codes showed. What is going on?
More info: Just hit 100,250 miles. Purchased on March 17, 2008. Went in last week before the 100,000 miles for a check up and ended up with $1,000 for a coolant pump (both now, other coolant pump was replaced within the last 6 months). Also got: break fluid, belt, break alignment, oil change, tires (this I was expecting hardly passed state inspection in March), possibly something else.
I have been doing the oil changes since 15,000 miles, filters, pcv (or pvc whichever), all normal items. Problem free until I have them do a check now issues. So to recap non normal items done: blower motor in 2009, radio replacement in 2008, coolant pump in Mayish, other coolant pump and 12 v battery last week. Read more : [URL] ....
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My 2nd gen 2007 Prius started to show a strange behavior today and I don't find any answer to it. While driving without any cars close, with all seat belts closed and nothing on the passenger seat I started to hear slow paced beeps (approx. 20) then fast paced beeps. When I switch off the car and started it again I got the same beeps after approx. 30 seconds. I never got any visual warning and the OBD reader doesn't show any error code.
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We recently purchased a used 2006 Prius. The vehicle has approximately 74K on it now. Well the other day my wife went to leave work and pressed the power button while pressing the brake pedal, and the Master Warning Light and brake warning light both came on. The car would not allow her to shift the car so she tried to turn it off and it wouldn't do that either. After about 5 minutes she finally got the car to turn off, and when she restarted the sequence everything went back to normal and she drove home fine.
We called 2 dealers and they both seem to be confused by the symptoms, but one thought that maybe the battery was old on the transmitter. So thinking that might make sense I replaced the battery with a new one.
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My wife and I own a 2006 Toyota Prius that we bought used 2 years ago. a couple of days ago, the master warning light (red triangle exclamation point) and check engine light came on. I took it into the dealer and of course, our hybrid battery was dead - battery and a new ECU required.
Our car is at 99,000 and 32 days out of warranty. Went down the road to atlanta hybrid repair. they were incredibly nice, and said that my computer was fine, but the battery would need to be replaced.
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I was driving down the road and the VSC warning light came on with the check engine light... What could be wrong should I have it tow to the dealer!
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The red triangle warning light on our 2004 came on and went away again It has 100k miles If I take it to the dealer can they pull some codes and figure out why it turned on We have to drive the car to 600 miles for the upcoming weekend and I don't want to be stranded on the side of the road The car has 103,000 miles We just replaced the 12v battery so I know that is OK
I also saw the following things to check. Is there anything else we should check?
1 - Are any warning lights on besides the red triangle? For example, the red BRAKE light, the amber ABS and VSC lights, or the amber circular icon?
2 - Did you check the brake fluid level? If low, buy a new container of DOT3 brake fluid and replenish as needed This fluid will dissolve paint, so do not spill it
3 - While you are at it, check the radiator and inverter coolant levels by looking at the translucent reservoirs behind the radiator and next to the inverter If low, fill with Toyota Super Long Life Coolant
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It was driving me crazy that the red triangle warning light (master warning light) flashed for only a split second, once per day, two days in a row.
I drive 100 miles per day. My 2004 Prius has 136K miles.
It turned out to be low motor oil level, 1.75 quarts low.
My car is burning about one quart every 5K miles which probably is within the normal range for a 136K car.
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I was driving earlier today and it flashed twice (about a second and a half each), and then didn't see it again for a few hours. I was going about 40 MPH at the time.
I was driving somewhere else today and when I got to the 70MPH mark (really, between 60-70), it objectively increased in frequency. I searched google and these forums, and the closest thread I can find that shares my ailments was this one:
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