Prius red triangle no codes

Maybe some more learned Prius Chat brethren will have some idea. But basically your almost 18 year old Prius, is telling you by virtue of the Red Triangle and it's operation that something pretty serious is happening. ... Cheapies usually just say "no codes present" even though you have lots of warning lights on. First check your 12v battery ...

Vehicle: 2005 Prius. Model: N/A. Michikazu said: ↑. Last night after leaving a friends, about 1 min into my drive I got an explosion of dash lights, the car shut down and turned off. (12V battery is fine) Red Triangle, Check Engine, The works. Pulled over and ran the OBD Fusion app and came back with P0420 and P3190.2007 Prius red triangle p2103 code. Jump to Latest Follow 5K views 2 replies 3 participants last post by cj1 Sep 11, 2021. J. jazzgitah Discussion starter 4 posts · Joined 2021 Add to quote; Only show this user #1 · Sep 11, 2021. I have a 2007 Prius. The other day the red triangle of death appeared along with an array of other lights on the ...2007 Prius red triangle, p2103 code, advice needed. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by gstar, Sep 11, 2021. ... Location: florida Vehicle: 2007 Prius Model: N/A. I have a 2007 Prius. The other day the red triangle of death appeared along with an array of other lights on the dash. Shortly after the car ...2008 Toyota Prius with ~270000 miles on her. Today randomly the red triangle of death popped up along with these 2 codes according to auto zone.Red Triangle, ABS, VSC, Check Engine, Will not go ready and does not show codes. Discussion in 'Gen 2 Prius Main Forum' started by deegee, Jul 6, 2021. deegee New Member. Joined: Jul 6, 2021 6 1 0 Location: Georgia Vehicle: 2006 Prius Model: V. My daughter bumped her 2006 Prius into an SUV in front of her. No one was hurt.I have Prius 2005 parked for around 5 months. last week I moved the car and all was good. During driving the fuel motor stop working and the car starts to limp. I stopped the car, turn it off and on again, then all warning light turn on (check engine, VCS, ABS, and red triangle). The car moved but it seems like the main battery stopped working.Hello fellow Prius owners, I ran into quite an interesting problem today, and would LOVE some help/guidance. ... and would LOVE some help/guidance. I have a 2008 Prius, so today while driving the Red triangle suddenly came on, along with an exclamation point in a car on the digital screen. After driving around for a little while, even getting ...

2006 Prius. Model: N/A. So I was driving after a few days on vacation and my car randomly started displaying the Red triangle and the Vsc light and the exclamation point light. When I got home I checked the 12v battery voltage and it ranged from 11.6 when lights were switched on and 12.2 when off. I heard that is low, but have not been able to ...Not everyone can afford to install solar panels or get a new Prius this Earth Day, but there is one place you can go green without spending an arm and a leg or radically changing y...N/A. When you first log into techstream and connect to the vehicle, you'll see a column of buttons on the left side. Click the health check button to retrieve the codes. You'll get a screen that lists all the codes present. Look down at the bottom toward the right and click the blue icon that looks like an engine with an eraser on it.Also watch this video: How to make your Hybrid battery last a lifetime (secret tips)https://www.youtube.com/watch?v=OC7bCYnxnfYWhy you should buy a used Toyo...In disconnecting the 12 V battery you have deleted any codes that were present. 12.5 V is not bad and certainly not a reason for problems. If anything, all you need to do is put that battery on a charger and charge it up. #3 dolj, Jan 9, 2020.The "death" triangle might indicate that you need a new 12V battery. A new battery fixed my problem on my old 2008. YouTube has instructions how to do it. Basically all you need is a 10mm socket and a bit of patience. #5 plug-it-in, Jun 20, 2016.The red triangle warning light is coming on intermittently in my 2008 Prius. It comes on, beeps, the screen tells me "Problem," and then it goes away again for a few seconds. I checked with an OBD2 scanner and got the code C1241 which according to Google has to do with the 12v battery. I just replaced the 12v battery ~6 months ago though.Triangle of Death w/check engine, VSC & Brake control lights.CAR NOT DRIVING! NO CODES. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by KlaustheOriginalHybrid, Dec 6, 2019. Page 1 of 3 1 2 3 Next ... It turned off the moment the RED TRIANGLE OF DEATH (AKA Master Warning light) and the CHECK ENGINGE LIGHT & VSC LIGHT ...

What Are the Causes of the Red Triangle? There are three causes of a “Red triangle of death” in Prius: battery, standard battery issues, and low oil pressure. 1. Battery issues. The red triangle on your Toyota Prius can be caused by issues with the hybrid battery, which powers the electric motor and the gasoline engine. Other Hybrid. Model: N/A. If the fob battery is dying, you will hear a long beep when you turn the car off. There will be no dash warning lights. The red triangle is indicative of something else. Only the codes will tell. #3 firepa63, Mar 31, 2009.If you see the red triangle warning light on your Toyota Prius, it means that there is a problem with the vehicle's hybrid system. There are a few things that you can do to troubleshoot the issue: Check …> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. ... Need to get your codes to see what is throwing Red Triangle. Also 12v health is one thing to consider. The coolant side water pump is common ...Now weeks later and many hundreds of miles climbing the Grapevine and on the 405 congestion, no more red triangle. Having just passed the 190,000 mark, it looks like it has fixed the problem. #7 dragonspeak , Apr 10, 2015

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Prius. 2020. Many Prius drivers have reported the most common cause for a red triangle light is an issue with their battery. Typically, the codes that come up after a diagnostic …2004 Prius. Model: N/A. P0A2D/249 is clear, it had a broken red wire at the plug. I spliced in a new plug, very cramped but doable. With this clear P0A08/264 showed up. The troubleshooting list is daunting. With the car off the 12v battery reads 12.4v at the batter, with the car on it reads 14.15v.Hybrid car pictures of the Toyota Prius, Ford Escape, Tesla Roadster, and Aptera. Check out this image gallery of Hybrid cars. Advertisement One of the most recognized Hybrids on t...When the light turns on briefly during normal operation, it means your Prius is losing traction—and the system’s fighting hard to maintain it. But if that light stays on, or if you see a light that says “VSC OFF” or “TRAC OFF,” you’re likely dealing with a different problem. These lights mean that your VSC system is off ...

Jan 8, 2023 · The red triangle warning light on a Toyota Prius indicates that there is an issue with the vehicle’s emission control system. If this light comes on, it means that the system needs to be reset. To do so, turn off the engine and press and hold the trip meter reset button for about 10 seconds until the light goes out. Vehicle: 2004 Prius. Model: N/A. During a highway trip three months ago, my 2004 Prius suddenly lost engine power, the red triangle Master Warning light came on accompanied by a warning sound, and then the Hybrid System Warning sign appeared on the Multifunction Display. I pulled off to the side of the road and stopped.N/A. I just had this same issue happen to me today. The door open light + red caution light was on with a constant beep while in drive. It turned out to be the inside of the door was dented where it presses up against the driver door sensor. Now, my Prius has 280,000 miles on it, so that may be part of it.2006 Prius. Model: ----USA----. I have a 2006 Toyota Prius with 182,000 miles on it. Yesterday when going to lunch I started my car and the Red Triangle, Check Engine, Circle with Exclamation Mark, the little red car with exclamation mark on the display and VSC lights all came on. On my way home from work I stopped and picked up a new 12v ...I'm having a strange Prius issue and looking for some help on what to do from here. Background: 2005 with 120k on it; I've had it 5 years. ... No codes, they won't do anything. ... Then today, the red triangle, VSC, and yellow exclamation point came on while I was driving. I took it home (it drove fine; I'd have taken it to get the codes read ...Jan 4, 2015 · Ema - Red Triangle, No Gas Engine, No Codes Thrown? Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by CBarr31 , Jan 4, 2015 . Page 1 of 2 1 2 Next > The day the triangle lit up, with it came the yellow VSC light, the yellow brake warning light and the check engine light. The computer shuts you out of the ability to use the cruise control, and the top 1/2 inch of the information display is changed to show an outline car, in red, with an exclamation mark inside.Red Triangle. No Codes. Light symbol appears on touch screen. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Nathaniel Schex, May 22, 2022. ... Founded in 2003, PriusChat has been the go-to spot for Prius, hybrid, and EV discussion for over 10 years. PriusChat is the one of the largest privately-owned car forums ...When the light turns on briefly during normal operation, it means your Prius is losing traction—and the system’s fighting hard to maintain it. But if that light stays on, or if you see a light that says “VSC OFF” or “TRAC OFF,” you’re likely dealing with a different problem. These lights mean that your VSC system is off ...2006 Prius. Model: I. I am getting the red triangle of death along with the vsc, check engine light and low tire pressure. Of the main display in the energy/consumption, I get a car with a vertical line in the middle of it. The car seems to be sluggish. I then noticed the car charging and decharging in less than a minute.

2006 Prius. Model: Five. I just acquired our second Prius, a beautiful 2002 (Gen1 in the USA) with 90k miles. On the dash, I get the red triangle of death with the exclamation point inside it. On the computer info screen, I have an icon of a car with an exclamation point in it and it reads "problem". I have connected the OBDII reader to it and ...

My code came back in less than 30 seconds. "The first step is to clear the P3009 trouble code by unhooking the 12V battery for a moment or using a code reader. Now turn the key on/ but NOT start/ready mode, wait 30 seconds and if the code comes back, the leak is in the battery case. If the code does not return, turn key to start to "ready mode ...no drive but no codes; red triangle; will not go into drive; Chicov Junior Member. Joined: Aug 12, 2018 7 0 0 Location: Greenview IL Vehicle: 2005 Prius Model: N/A. 2005 Prius. Red Triangle and other lights on. Followed others postings. When put into Drive will not go to "D", and "Ready" and "0 mph" does not show. Battery checked and charged to ...hi guys, thanks for reading. my prius has 172k miles on it and has never had any issues and is regularly serviced at the dealer. yesterday i got the dreaded red triangle and check engine light along with the temp indicator on the navi screen. i pulled over immediately. after sitting for a bit, the lights went away except for check engine. i …> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting ... with 134k km in the clock and I have all the lights up on the dashboard (red triangle, check engine, ABS, brake) and the only code what I get via Torque Pro is P0560. I purchased VXDIAG and Techstream from Amazon and it on its way now. ...Prius battery cell - https://amzn.to/314cBpJBluetooth ODBII reader - https://amzn.to/2LNt660You can use my referral code to get 1,000 miles of free Superchar...I have a 2007 Prius that in the last week or so has started showing the red triangle on startup, but it goes right off. It doesn't happen all the time, but often enough that it has me wondering. Last time I started it (from being parked overnight), I heard a short buzz that also went right off. No other warning lights and fluid levels look OK.> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! ... Red triangle of doom comes up too. Plus the 'Car with Exclamation' in the LED display. ... No sub codes available to assist. Basic (free) Dr Prius showed battery cells within around 0.1V of each other, running nice ...jadziasman Prius owner emeritus. In my 2005 with 133,000 miles, I recently have symultaneously been getting the big ! red triangle on the dash and yellow headlight symbol (with small pointing arrows at either end of symbol) on MFD - see attached. This then goes away but returns, usually after traveling the rural washboard paved local roads.When you get a trouble code, usually it is too late to do much if anything about your hybrid battery. Then it happens—the triangle of death, the master warning light. The thing is this if you ...

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What Are the Causes of the Red Triangle? There are three causes of a "Red triangle of death" in Prius: battery, standard battery issues, and low oil pressure. 1. Battery issues. The red triangle on your Toyota Prius can be caused by issues with the hybrid battery, which powers the electric motor and the gasoline engine.Atlanta GA. Vehicle: 2008 Prius. Model: Base. Last week when driving my 08 Prius the check engine and red triangle of death came on. Drove the car home but as I got to my street it starting driving strangely like the transmission was slipping. On my Dr Prius app I saw one of the banks in the hybrid battery had failed.> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and ... a P0A93 code is logged when there is a no-start on the pump, but the next time the car starts there is motion in the coolant reservoir. ... 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 ...Hello everyone, TLDR: bought a 2005 Prius. Red triangle of death showed its face, car seems to run fine even with warning lights. ... I went to Autozone to have the codes read and it's showing P0138 - O2 sensor circuit high voltage sensor 1 bank 2, P1121 - coolant flow control valve position sensor circuit stuck, P1116 - coolant temperature ...Many Prius drivers have reported the most common cause for a red triangle light is an issue with their battery. Typically, the codes that come up after a diagnostic are P0A80 and P3000. The P300 code refers to the Prius' battery control system. When this code appears, the problem is typically caused by several sources, but it means there is an issue with the HV battery's ECU. When it reports ...2009 Prius with 133K miles.12 V battery was changed 3 months back and also Inverter Pump was replaced recently. While on the road driving in the normal traffic, saw the red death triangle coming on. ... and checked the codes using a generic OBD reader and found PA080 (Replace Battery) and P3012 (cell 2). I erased the code which resulted in Red ...Hello. Have a 2008 prius. Ran great till 12 volt died. Bought a new one and replaced it. All internal electric works fine now. I just can't engage the combustion engine. I get red triangle and no ready light. Everything else is working. I heard fuel needs to be at least half full to restart engine.Luckily I have an identical one of these and a 2002 as well (prius junkie.) I swapped the two ecu's ( the engine ecu and the hv ecu - they are hooked together and I just swapped the whole assembly.) Results: No change on either vehicle. The one without a problem still has no problem, the one with the problem still has the big red triangle.Location: new jersey. Vehicle: 2007 Prius. Model: Base. hi everyone. have 2007 gen 2 with 189728 miles. red triangle blinks on sweeping radius turns ( exit from highway) code 1241 on my DOB2. any one has any idea what may be a reason for it.This morning I started my 2008 Prius (approx. 31k miles) and found the big red triangle with an exclamation mark and check engine light turned on. I drove my car <1 mile to a smog check station where they ran a diagnostic on it and came back with the P0A9C code. A quick internet search turns up that this is "HYBRID BATTERY TEMPERATURE SENSOR "A ... ….

> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. ... Need to get your codes to see what is throwing Red Triangle. Also 12v health is one thing to consider. The coolant side water pump is common ...I confirmed with TechScan that the code is indeed P0A39, "Generator Temperature Sensor Circuit High". I replaced the inverter coolant pump. I replaced the Hybrid Control module under the dash with one from Ebay. I had to reset the immobilizer by shorting pins 4 and 13 on the OBDII port. The red triangle and P0A39 code came back.Oct 13, 2010 · Location: Sacramento. Vehicle: 2002 Prius. A 2001 Prius is getting a warning triangle. No check engine light, and with my OBDII scanner, it shows there are no codes. I can erase and the triangle goes out, but it comes back on eventually. It seems only if the car is driven a long time/distance it comes on, indicating some heat issue perhaps. N/A. I have a 2008 Prius Touring with 101,500 miles I bought a couple months ago. My problem started two weeks ago. I get the red triangle, yellow "!", and VSC lights while driving anywhere between 0.1 and 25 miles. When I turn off the car, it won't go into Ready mode unless I disconnect the 12V battery for 30 seconds and reconnect.Vehicle: 2007 Prius. Model: ----USA----. Had loss of power with red triangle and hybrid warning light, ICE and battery cooling fan running continuously. VSC and ABS lights was on since i owned the car (20months).Took 12V battery to Autozone and it checked good. Radiator, coolant reservoir and inverter coolant reservoir are full. Hey everyone. I own a 2007 Gen 2 Prius and lately it started showing the red triangle warning light. But it happen intermittently, randomly but almost in every drive longer than 10 minutes. It just pops up for a second and then gone. I cannot, for the life of me, figure out what's common about those occurrences! I've just recently started getting the big red triangle+check engine (also occasionally the VSC and (!) but not always) lights, took to advance and confirmed the dying hybrid battery on my 2007 with 225k miles. ... So I only finally got around to checking the codes on the Prius after almost two months of non stop work with our CBD hemp harvest ...Jul 20, 2020 · no - but I'm only using the free version of dr. prius. i do have the paid version of torque pro. nither of these show a battery or engine code - even though red triangle and little headlight wobble symbol are displayed. (maybe it's just that headlight leveler thing). Prius red triangle no codes, You are right, the catalytic converter issue is unrelated to your current no-start problem. 4. You are wrong, with regards to a "dead" traction battery and the Prius being able to run. It depends upon exactly what is wrong with the traction battery., The simplest way to reset a warning light in a Prius is to disconnect the 12V battery. This will erase the stored codes and reset the warning light. To do this, locate the battery in the engine compartment, remove the negative cable, wait a few minutes, and then reconnect the cable. 2. Use a Scanner Tool., Prius Red Triangle No Codes If the Prius has a red triangle with no codes, it indicates that there is a problem with its electrical system. To ensure the vehicle's integrity and safety, it is best to take it to a qualified mechanic for assessment. In order to prevent further damage or issues, one may choose not to drive during this time until ..., First, the red triangle Warning light will come on, followed by "PROBLEM" on the display followed by a red temperature indicator. Typically it flickers off after just a few seconds, but sometimes the temp light stays on for longer, maybe 30 seconds or a minute before it shuts off. Then it continues to go on and off every few minutes for as long ..., P3000 code indicates the problem with your Prius' battery or with the total control system. Reasons behind the Red Triangle of Death. Curious about the "Red Triangle of Death"? It's not just any symbol—it's your car's way of talking. Join us on a journey to uncover why it's so intriguing! Check for Warning Lights, The triangle is still there so I took it to Auto Zone to check codes. The codes are c1241(low battery positive voltage),c1310(malfunction in HV system), c1343(malfunction in hydraulic system RR, c1344(malfunction in hydraulic system RL) I know this means I have a problem with my Brake system but don't know what., I have 2008 Prius with 126k miles on it. I was driving at highway and three lights ( red triangle, yellow circle with ! and the red car with the ! on the display) came on. I didn't stop right away. After 2-3 minutes car shut down and never start again. Inside lights and signals were okay and bright. But even I put the key in, car didn't response., Oct 1, 2023 · What Are the Causes of the Red Triangle? There are a few things that would cause the red triangle to pop up on the dashboard. These are the battery, electrical grounding issues, and low oil pressure. Let’s begin with the most common cause: The Battery. The major cause of the red triangle is the battery. Feedback from most drivers has ... , N/A. When you first log into techstream and connect to the vehicle, you'll see a column of buttons on the left side. Click the health check button to retrieve the codes. You'll get a screen that lists all the codes present. Look down at the bottom toward the right and click the blue icon that looks like an engine with an eraser on it., 2002 Prius. Model: Base. Any information would be much appreciated. I have a 2002 prius with 208000. Still get's good mpg, seems to run great. I replaced the HV battery with a few months ago. About 2-3 times a month the red triangle will come on. I pull over, turn the car off and on and it drives fine again for a while., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Main Forum > Generation 1 Prius Discussion > Attachments are working again! Check out this thread for more details and to report any other bugs ., The codes they read were: C1241 - Low Battery Positive Voltage: C1256 - ABS Inlet Valve Coil RR Circuit Short To Battery. C1310 - Malfunction in HV System. On top of all that, the brake actuator is making that "rattling" noise very often even after the car is off. Also, I've tested the 12V battery and it's fine., Mar 13, 2019 · The Prius has 203,000 miles and is 2008 with original hybrid battery. The Prius has always resided in Los Angeles no other states. I pulled the 12 volt battery for 10 mins and the Prius started up and dash is clear of warning lights no red Triangle or check engine lights. Then after idling for 10 mins and shut down the Red Triangle and the ... , Immediate Attention: Whenever the red triangle appears on your Prius dashboard, it’s a clear sign that the car has detected a problem that cannot be ignored. …, Hey everyone. I own a 2007 Gen 2 Prius and lately it started showing the red triangle warning light. But it happen intermittently, randomly but almost in every drive longer than 10 minutes. It just pops up for a second and then gone. I cannot, for the life of me, figure out what's common about those occurrences!, I have an 07 with 150,000 miles that throws these codes when it is raining. It can go a thousand miles without a problem if the weather is dry. ... > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 ... and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. Red triangle and yellow ..., Hope it is ok to post a problem related to the red triangle of death, and get some feedback. Background: 2006 prius, 65K service check (oil change and tire rotation)completed 2 days previously. Setting: Freeway driving (to pick up family at airport 80 miles away) Plot: 60 miles into journey, Red Triangle light, malfunction indicator lamp and red brake light come on, at the same time, the ..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. Ema - Red Triangle, No Gas Engine, No Codes Thrown? Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by CBarr31, Jan 4, 2015 ..., The third annual MetLife Triangle Tech X Conference is going by the theme Women and STEM: Harnessing the Great Reevaluation this year. The third annual MetLife Triangle Tech X Conf..., On June 20 it stopped cooling almost entirely and I got the red triangle with the exclamation flashing with the word "problem" and beeping. I took it to the dealer who checked it and said that I was out of freon ($250). They said there were no codes and they didn't know why I had the red triangle. It cooled again, but was still intermittent., The dealership should have cleared the codes, you can do yourself if you have use of a OBD II reader. Still strange that it put the light on from the coolant add. It should be red/pink, not the green though. To the touch the red/pink seems like it has more of a lubricant in it, (it's very slickery.) 1., 2008 Prius with 3/4 warning lights and no codes . ... The red triangle. The check engine light. A red icon with a car and "!" on the "info" display An hour later when starting the car to take it to read codes, another light popped up (in addition to the others) for <1 minute before disappearing ..., The Red Cross has updated its first aid guidelines for conscious choking victims. They now recommend that you give five back blows before performing the heimlich maneuver. The Red ..., I was driving my 2001 prius with 185k on it and the red triangle along with the check engine and the parking brake light came on. In the display screen i had thw car with the exclamation lighting up. ... You need to have the car scanned for codes with a Prius-aware scan tool. You can have this done at a Toyota dealer, where it will probably ..., Prius Red Triangle No Codes . If you're the owner of a Toyota Prius, you may have noticed a strange red triangle with an exclamation point appearing on your dash. This is known as the "Prius red triangle of death" and it's actually nothing to be concerned about. Here's what you need to know:, Prius Red Triangle Warning Light. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by terry pooler, Apr 10, 2019. ... VSC and (sometimes) the brake system yellow icon appear. I've checked it for codes as has my local repair shop and no fault codes show up. Sometimes when those lights are on and we've been on the highway ..., >Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting >, Red barns are a common sight in rural parts of the country, but have you ever wondered why they're painted red? Learn about the purpose of red barns. Advertisement If you've ever d..., Vehicle: 2005 Prius. Model: II. A bit more on this. The 12V battery was at 12.2 volts. I put a trickle charger on it and brought it up to 12.9. Now when I power up the car the red triangle is still there but the brake and vsc warning lights are off. The voltage at the battery reads 13.5 with the car on., I have a red triangle on my Prius with the codes p0420, p2118, u0293, p0a93, my mechanic couldn't see anything wrong with the catalytic converters and replaced the 12v battery, triangle still came bac ... 2005 prius red triangle. Was working, parked in garage over night. Next morning had red triangle., Multiple codes causing red triangle and check engine light. Hi everyone. I have a 2007 Prius with 181,000 miles that I've had about a year. I've had to replace hybrid battery cells on 2 different occasions so I thought when the triangle appeared again, it would be the same thing. Instead, I got 4 codes that I haven't seen before from my car., the red triangle keeps coming on with the water temp light but goes right off but no heat. Replaced the thermostat it worked for about a week. I have a obdII no codes. Took to a shop they said 12V and hybrid 49% both replaced 3.5 years ago., If you see the red triangle warning light on your Toyota Prius, it means that there is a problem with the vehicle's hybrid system. There are a few things that you can do to troubleshoot the issue: Check …