2008 Prius with 284,000 miles-never had problem. Now, started car, no power steering (red triangle). Ordered new power steering control from ebay, went out of town for 10 days. Return, car is DEAD! Trickle charge via fuse block, get car started finally, still no P/S, but it shows charge then shuts engine off. Start and it does same thing.
View 1 RepliesMy red triangle light came on! and the PS light came on the square screen and my power steering is in the dumps (doesn't work).
Where would be the first place to check? could it possibly be the accessory belt that came off/broke? is it hard to access/replace that?
The 2007 my wife drives has no power assisted steering as of yesterday. This afternoon I drove it around the neighborhood and yup, its like driving a 42 DeSoto.
The red triangle is on the dashboard
NO CEL
NO MFD message - everything is normal
Plugged in my ScanGauge II and there are no DTC codes. Am I correct that this is a failed steering ECU?
I have 2005 Prius with 110k. Yesterday, red triangle and check engine light came on and I lost power while driving...SCARY. Took it by dealership. They called this am and said it needed a new HV-ECU and that would cost $800. The error codes they gave me were P0A78 and P0A94. Anything else I should ask them to look at? I'm wondering if the HV ECU is something I could buy used and install myself? I'm not a mechanic but am comfortable with most DIY projects.
View 10 RepliesPurchased a used 2006 prius with ~180K miles on it from south bay a few months ago. At the time of purchase the guy warned us that it 'ate' motor oil.
After 2 months of driving without issues (driven couple of hundred miles), on an uphill road the engine overheats and throws the red triangle, vsc and check engine lights on the dash, along with loss of power. After cool down I check oil level and sure enough it is low, since this is on top of a hill we essentially coast all the way back home without any real issues. Once home I top up the oil. I do a test drive around the block without issues (no loss of power) though the check engine/red triangle/vsc lights are still on. But after I take it for a longer drive the loss of power returns.
Since my bluetooth obd2 connector wasn't working I borrow one from my friend and try to get a read. Unfortunately the thing puts out no obd2 error codes. Living in the bay area I apparently cant just take it to an autozone, to get code readings. I take it to meineke auto repair, they too are unable to get an obd2 read, and want to charge me $100 for a full reading, which I decline.
I do a few diagnostics steps including 'resetting' the computer by leaving it off of the 12v battery for a few mins, this clears the red triangle et al on restart. I do a test drive, at first everything is working just fine, but after about 10 mins or so of driving the red triangle/check engine/vsc lights returns, along with loss of power. (under ~20 mph only, cant go uphill).
Take it to a mechanic and they come back with code: "APOA92. Trans Axel issue - MG1 performance is off. Measured torque is different than executed torque, enough to be a problem. 95% sure it is the transmission." I still haven't checked the 12v battery.
I changed my oil, oil filter, air filter at 90k for a trip to Miami this past weekend. Uneventful on the way up. On the way back, stopped and did some shopping before hitting alligator alley to come back home. As I got on the alley after paying the new $3 toll my 05 prius with 90k miles on it would not go over 65 with my foot on the floor and the battery on the mfd was in the pink. So I drove to the nearest exit, checked the fluids etc, all good. Got back on same thing so I put on hazards and stayed on until i could get off on a much slower road. I was going about 55-60 and it would go no faster.
As I got to a place I pulled over DC'ed the negative battery cable and let it sit for a half hour. I then attempted to get going and it seemed to be running fine until I attempted to pass a car and the car seemed to lock up and lose all power, check engine light came on and the red triangle light came on. I pulled over and let it sit again. I then got it to a gas station with the check engine light on. I put a few gallons gas on and tried to limp it home. It made it home and the battery seemed to recharge back to all the blue it can get to, but has yet to hit the green.
I have a 2008 Prius, with SKS and Nav, and 103,000 miles on the odometer. I bought it from the original owner in 2010. So far it has been trouble free, with just oil changes and scheduled maintenance.
When I turn power on, I get a red triangle with exclamation point. Also a row of yellow indicator lights. Also along the top of the LCD display there is a red car shape with an exclamation point on it.
I followed the procedure for checking the voltage of the 12v battery using the diagnostic screens, using the procedure at weird-stuff-happening-mpgs-dropping-test-the-battery.73400/and I got 11.8 volts.
Since it seemed likely that my problem is related to the (original OEM) 12v battery, which is now 6 years old, I took my handy jump-start battery thing (see photo below) and attached its red alligator clip to the positive post under the hood, and the black clip to the frame. I hoped that would allow me to start the car, but it did not start. The error lights on the dash were unchanged.
Question 1. Does the fact that the symptoms remain the same after I have connected my jump-start battery mean that the problem I'm having is NOT my 12v battery?
I then hooked up my cheap OBDII code scanner (see photo below) and checked for codes. It found none.
Question 2. Does the OBDII scanner not finding any codes have any importance? When people write about having their car towed to the dealer and having error codes read there, does that refer to OBDII codes, or are they referring to some other type of codes that can only be read by a dealer?
While I was in the diagnostic screens, I found three screens of error codes. The screens are called DSP-AMP, EMV, and NAVI. See 3 photos below.
Question 3. Do these error codes have significance?
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. I turned the car off and then tried turning it on again. Engine power was restored although the warning lights remained. We took a chance and carried on with our trip. The same sequence of events reoccurred about 10 times on our 1,300 km journey. I took the car to a Toyota dealer where they found a C2318 DTC. They checked the battery and the HEV fuse but could not locate the problem.
We returned home and on the way the same thing happened a few more times. My service manual noted that the description for C2318 is Low Voltage Error (Power Supply Malfunction) and the trouble areas are HEV fuse, IGCT relay, Wire harness or connector, or Auxiliary battery. Since the car was nearly 7 years old I thought I had nothing to lose by replacing the battery, which I did. However, on a short 150 km trip last week the problem appeared again, once while approaching our destination and once when we were almost home. There seems to be a pattern in that the problem appears every 150 km or so of highway driving. It has never done it while driving in the city.
So I replaced my battery about 20k miles ago, so I know that's fine. I always throw a P0420, but I'm told that's fine too. So I was driving, and I lose power suddenly. The red triangle comes on, and I plug my scangauge II in, which tells me it's P0121, or the throttle body sensor. I reset the codes to make it home - my battery DID charge just fine on the way home, making it up to a 63.5 state of charge. Now when I start it, and press the gas, it tends to rev up, rev down, and repeat. I haven't gotten the red triangle again yet but I also haven't driven it since then.
View 2 RepliesMy partner's Prius is bring up the red warning triangle. She had a system diagnostic carried out, which brought up these two faults:
C1241 Low Battery Positive Voltage
C1300 ABU ECU Malfunction
The faults were reset, but it was only a short matter of time, before the red triangle appeared. My partner tells me this tends to happen more frequently when she is steering left and in colder weather.
She was advised the ABS ECU will need to replaced (it does says "new actuator" on the paperwork)
So I have come into ownership of a 2003 Prius and now I'm having issues with the power steering. I contacted Toyota and they told me the recal for the pinions was completed in 2012. Now own in the car I've noticed the steering wheel will start to violently shake and just last week while driving I got the warning triangle and the PS symbol and I lost all power steering. All this happened while driving on a highway. Toyota wanted to charge me 150 to diagnose the problem which I declined and took it to my well trusted mechanic. He told me the rac needs to replace. I've done a lot of research on this problem and have found many people complaining that even after having the recall done, they still had a problem and also were told the rac needs to be replaced.
View 9 RepliesOur 2004 Prius (71,275 miles) has not been driven much for the last 2 years. It is only used when we need to drive further than we can comfortably in our 2012 Leaf. Most of our trips are short.
Today the power steering feels stiff. I'm relying on my memory of what it felt like when it was new. Perhaps I am comparing it to the Leaf.
I started to check the power steering fluid reservoir and discovered that the power steering is not hydraulic but electrical and electronic.
It it a sign of a failing system? Should I expect increased trouble?
I have a 2004 Prius, the Red triangle came on intermittently and went off so I changed the 12V battery last night, after changing it the red warning light went off and everything seemed okay. Today while driving, the warning light came back on. I checked the battery voltage via diagnostic mode on the cars computer and the specs are what they should be. I noticed the following error codes in the computer:
01-D5, Sub-code: 190-30-8
01-DC, Sub-code: 190-B7-8
01-DC, Sub-code: 1C6-4D-F
Not sure if these are what is causing the problem.
After driving for 2 or 3 miles my car turns on this red triangle and says "problem" on the GPS. All the threads i have found this is accompanied by a check engine light but mine does not. On the gps there is also a symbol that i looked up in the manual, it says to take the car to a dealer. is there any way to know exactly what this triangle means? There is not CEL tripped, tried 4 code reader and nothing.
View 5 RepliesMy 2007 proud of 180k miles which hasn't had any issues up until now just randomly gave me this error, where the red triangle of death, vsc, and tire pressure ((!)) Sign came on. It drives fine and there is no check engine light.
View 16 RepliesMy 2006 has about 67,000 miles on it. The other day it began to behave in a very strange way. I had the triangle show up and it just would not go away. I checked all the fluids and they were good. I did notice that there was a new icon I had never seen before. It looked like it was an curved device with a thermometer attached. When I looked it up the suggestion was to go to Toyota right away. So I decided to drive over. As I drove I could hear the fan from the back seat coming on. It was going very fast, so I guessed that the traction battery was overheating. The car would barely drive, no power. Even when I floored it there was very little acceleration.
I got it to the dealer and they gave me a loaner because it the car was recalled due to the accelerator pedal. Later in the day I got a call saying that a couple of ECUs needed to be replaced. The next day I got a call saying the traction battery was bad and would be replaced under the long term warranty. They said I also needed an aux battery. I knew my battery was not charging up to better than 10 1/2 volts dc. They said it would cost $300 installed, so I said I would get back to them.
I pulled off I40 to check my tires. I was getting some side to side wobble. I didnt see anything wrong and restarting got no power only light was parking led very dim. After a while power was back. I started up to the red triangle. Now I'm sitting in ready mode not wanting to shut down. 4 bars. Torque indicates no error codes
View 19 RepliesDriving home early from work today, moments after leaving the parking lot the VSC warning light illuminated. Followed by ABS and Power steering lights a few seconds later.
Car drove normally. Systems seemed healthy.
I quickly pulled over, took this picture, and then power cycled the car. The warning lights turned [off] and stayed off for remainder of drive home (~30 min).
If this has been posted before feel free to remove. I searched everywhere and didn't see exactly what I experienced with our Prius when the 12v battery was in it's final stages of death so I wanted to share.
Below issues all occurred within a one week time period 3-7-16 to 3-14-16. 2005 Prius with 145k miles, replaced traction battery on 7-30-15 / 127k miles.
First occurrence - happened a few seconds after starting and driving the vehicle. The ABS light came on and the power steering faded out and then came back, just briefly, and the car did not die. Turned the car off and back on again and all was well.
I performed the 12v battery test by entering maintenance mode. (hold the display button and turn the lights on/off three times, vehicle signal check, battery check) the battery was reading 11.9volts with the car off, I drove the car and it was charging at around 14.7volts and then was reading 12.2 with the car off after driving it. Which at the time seemed a little weak but nothing that was a red flag. I've read that you're supposed to replace the 12 volt battery every 4 years but I swear the one I removed looked stock.
Second time - again happened just a few seconds after starting the car and driving. ABS light came on, red triangle of death light, brake light, power steering was gone, and the power steering light came on, the car did not die. Restart fixed the issues again.
Third time - Happened about 30 minutes in to the trip while the wife was driving on the interstate around 75mph, wipers were on due to rain but visibly lost power, radio came on and off, all the lights on the dash (warning lights included) flickered on and off, power steering was gone, car died completely and would not restart. Tow driver had to boost the battery long enough to put the car in neutral so we could load it on to the tow truck. When we got the car home the battery was completely dead again.
I ordered an Optima Battery 8171-767 (DS46B24R) YellowTop Prius Battery from Amazon which appears to be a direct replacement, and simple to install. I drove the car for a few miles, returned to the house, performed battery test again via maintenance mode and the battery was charging at 14.0 and reading 12.5 when off. I can't be certain but I think the battery check feature may be displaying false information if the battery has dead cells and the car is trying to charge the battery? I took the old battery to Advanced Auto Parts and had them run a diagnostic check and the tester stated that the battery had dead cells and needed to be replaced. I gave them the old battery even though I didn't buy the new one from them and got a 10.00 store credit, unexpected and nice.
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
Recently while pulling into the gas station the brake, Triangle !, ABS and VSC lights came on. The dealer reset the error and said my ECU needs replacement at a cost of $1843. The Prius is a 2005 with 147000 miles. No problems since the reset so I am hopefull. I don't recall reading about a lot of others having to have expensive ECU replacements so I wonder how many have had similar problems and replaced their ECU.
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