Prius (2004-09) :: All Warning / Error Lights Went On When Suddenly Slow Down
2005 Gen2 with 216k miles
Driving on highway and accelerated to pass a vehicle, sudden slow down and all warning/error lights went on. Pulled to side of road and used Autel 539 to get codes P0A78 + P0A90. Scan code reader does NOT display the INF codes, so I can not get them.
Turned off vehicle and restarted. Put into drive and it appeared that I could move forward (and reverse) and was apparently running strictly on the ICE - no power coming from the DC motor for assist. HV battery would charge as driving down road.
It was slow moving, but as long as I was accelerating (very sluggish!) was able to move forward. If I took foot off gas pedal then ICE stopped running and would not restart when pressing on gas pedal.
Prius (2010-12) :: Car Beeped And Suddenly Hit With Multiple Warning Lights
I drive my 2005 Prius 40+ miles each way for my commute. I bought it in the fall of 2007 with 56k miles already on it, and with my commute I'm up to 140,000 miles already.
This morning I was about 5 minutes from work, cruise control on, and deeply absorbed in listening to a podcast. I was startled out of my reverie by several things happening simultaneously. The car beeped, the cruise control kicked off, and multiple warning lights lit up on the dash, with a warning icon of some kind also on my MFD.
(Once stopped, I looked up the warning lights. They were: Master warning light; Check engine light, or "malfunction indicator lamp", according to the manual; YELLOW Brake system warning; VSC warning light. On the MFD, the Hybrid System Warning Light was on.)
I was on the highway doing about 70 and I had just crested a hill, so I allowed the car to coast on the downside while trying to access the situation. I cautiously pressed the accelerator, and though the road noise made it impossible to hear the engine, the car seemed to still be driving normally. The Energy Monitor still showed normal flows between battery, engine, and wheels. I had one final, short uphill climb before my freeway exit, so I chanced it. I took it easy and allowed my speed to decrease on the uphill so as not to push too hard, just in case. Once off the freeway, most of the remaining mile is downhill or flat - I can often make it to the office without the engine, and in fact I did so this morning.
Once at the office, I put the car into Park and grabbed the manual so I could identify all the warning lights before powering off the car. I turned off the Prius, let it sit for 5-10 seconds, and powered it back on. The brake system warning and VSC lights did not come back on - only the master warning light, and "check engine" lights reappeared, and "Problem" on the MFD was again replaced by the Hybrid System Warning icon. After the usual 10 seconds, the engine started normally and responded to the accelerator.
One additional note: After the freeway exit, my car is usually at 1 green bar or just below on the hybrid battery. Immediately following the freeway exit is a steep downhill that usually puts the SOC to completely full. That was the case again today, and as often happens, that full charge was able to take me the rest of the relatively flat, distance to the office at my usual 25-35 mph. I mention this because whatever might be setting off the warnings, the Prius still seems to be managing the charge level normally; at least in the admittedly short period I was able to observe it after this occurred.
Prius (2001-03) :: Suddenly Car Started Stutter And Warning Lights Came On
I have a 2003 Toyota Prius with ~250,000 miles. Yesterday I was driving and the vehicle started to "stutter" and the warning lights came on. My ScanGauge indicated code P3125. I drove normally for 2-3 miles and parked for a bit. When I returned, I was able to start up and drive home with no problems (about 20 miles of highway and stop & go traffic), and drove most of this morning, but around noon it happened again and this time the vehicle would hardly move at all. It had no reverse and I had to push it out of the parking spot. I managed to limp home and park it.
View 11 RepliesPrius (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.
View 15 RepliesPrius (2010-12) :: Warning Light Flashing Inside The Car In Driveway In The Dark
I've had my car for a couple of months, and noticed last night a warning light flashing in the car in the driveway in the dark. I got in the car and tried to identify the icon but couldn't- bad eyes, apparently, and it flashes too quickly for me to make it out. It immediately stopped when I turned the car on. I could find nothing in the manual.
View 3 RepliesPrius (2004-09) :: VCS - Red / Yellow Exclamation And Check Engine Lights All Suddenly Turned On
While my car was idling in a CVS parking lot, the VCS, Red Exclamation in a triangle, Yellow Exclamation in a circle and the check engine lights all suddenly turned on.
In reading the forums, it seems the two most likely issues would either be the inverter pump (which I had replaced as part of the recall, and I see the fluid moving in the reservoir), or possibly a bad 12v battery (which I had replaced last year with the forum recommended Optima Yellow Top).
I checked for error codes, and there were numerous ones there at first, but I think that might have been related to the old 12v battery dying (I never reset after that). I cleared the codes, and no new codes are generating.
Prius (2004-09) :: Stop Caution Warning Every Time On Startup
I've got a 2006 Prius with GPS navigation. Is there a way to get rid of the caution warning on gets every time one starts the car? I have to press "Agree" each time and am looking for a setting to get rid of the warning. The warning reads:
CAUTION
Drive safely and obey traffic rules.
Watching this screen while vehicle is in motion can lead to a serious accident.
Make all selections only while stopped.
Some map data may be incorrect.
Read safety instructions in Navigation Manual.
Lexus RX 2010-15 :: ABS / Master Lights And Audible Warning Activated Suddenly
We were driving 2015 450h with 2200 miles on a slight downhill grade about 50 mph. Suddenly ABS warning light, master warning light, and audible warning activated. The center console "Brake" illuminated and the information center displayed "check hybrid system".
My wife attempted to pull the car off the road in a controlled manner but even slightly touching the brakes caused them to pulse, braking hard and then releasing. She finally got the car to the side of the road and shut the engine off. I then got into the drivers seat and turned the car on. The messages remained. Tried on an off, still the same. Tried brakes, the seemed functional. Since we were in a location that did not have cell service and it was an unsafe location to leave the car managed to drive it into nearest town.
Turned the car on and off about 10 times over the period of an hour. Without explanation, the car started with no warning messages. Dove the car another 200 miles since and it has now been at he dealer for over a day with no word.
I did see where a few RX350 models had reported a similar problem, but no 450h's. At the time of the incident we were not using the PCS system (off) . I am wondering about that as well since the ABS might be tied into the PCS?
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.
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.
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?
View 9 RepliesPrius (2004-09) :: AC Stop Cooling / Little Triangle Warning Turn On And Vehicle No More Moves
Need to solve the problem of my Toyota Prius car in 2008. The car is cold while working well for a maximum time of 1 hour, the first symptom is to stop the air conditioner to cool, then turn on the light triangle warning, after driving a little longer for the vehicle and no more moves. If you wait until the vehicle returns to work for a few minutes to cool, then everything fails again with the same symptoms. And you change the battery 12 Volt, and you change the water pump hybrid system and I can not solve!
View 3 RepliesPrius (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.
View 19 RepliesPrius (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.
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.
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.
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?
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.
Prius (2004-09) :: Warning Lights Came On - Rhythmic Buzzing
My '05 is completely lifeless in the drive. I have been assuming it's the 12v, at least to start. So this is what I've pieced together.
My key fob battery was dying, my car wouldn't start. Had to use the physical key to get into the car. I assumed the 12v battery was dead (but maybe it wasn't); the Parking button had the faint green lights. AAA jumped the car and I limped home, trying to charge the battery with about 30 minutes of city driving, with dash lit up with red BRAKE and triangle lights as well as amber !, VSC, and something else on. The check engine amber light was NOT on until I powered off the car, at which time, only the check engine light was on and a rhythmic buzzing. The buzzing only went away when I closed the window and then the car went quiet and dark.
I only just now (48 hours later) realized to check the fob before changing battery, which, sure enough, didn't emit the red light when I pressed the buttons. After I did the battery change, the red light comes on when pressing buttons, but no response from car.
I will definitely change the 12v battery, and hope hope hope this is the fix.