Prius (Gen 2) :: Check Engine Light Is On - Inverter Coolant Pump Shot
Dec 31, 2015
My check engine light is on and I think the inverter pump is shot. I have a some questions about how and when the pump is on. I have a mini vic on order and as soon as I get it hooked up I'll run for some codes. That is if I get it installed????
1- With the car in "ready mode" and at start up (car cold) should the inverter coolant pump be running.
2- With the car in "ready mode" Should I always see a water moving in the water reservoir.
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Having seen the rather catastrophic outcomes that are possible with inverter coolant pump failure, I've thought a bit about adding a flow sensor in the coolant path. I even went so far as to buy a flow sensor, which would probably do the job. However, it's somewhat heavy, and then there's the plumbing job to take care of. Seemed somewhat challenging to pull off.
Since this aborted endeavor, I began thinking about ways to detect surface turbulence at the top of the coolant tank, and am now thinking that might be easier to pull off, even if it requires programming a PIC to do the monitoring. My current thought is to install an LED and optical sensor in the cap, and measure light intensity received.
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I'm a new owner of a used 2008 Prius. Car only has 67K miles and other than the leak, appears to be in good shape.
I noticed the coolant was low in both reservoirs, filled it up (with the proper SLLC), but a day or so later the check engine light came on. Took it to mechanic (dealer is 2 hours away), he read and cleared the codes, then found the leak. Appears to be leaking where the lower hose attaches to the pump, so not sure if it's the pump or the hose that's the problem. I've also noticed that the pump seems a bit noisy for a few minutes after shutting off the car (of course, I'm new to the Prius so not totally sure what "normal" sounds like).
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Prius 2009 inverter coolant pump failure 51,300 miles....
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We seem to be getting reports of failed inverter coolant pumps here on just about a daily basis. I'm wondering if they're all just failing now or if this is something of a "backlog" of failures that started in Winter but are only really being detected now.
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My 2007 Prius with 162k miles had an Inverter Coolant Pump Failure Monday 6.5 hours from home when my wife was driving it home from a trip. Red Triangle, (!), vsc, and check engine light. She was able to make it about 20 minutes to a dealer where it was diagnosed. Luckily no further damage was done to vehicle. Yes, she should have stopped but continued on since car was driving OK.
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I own a 2006 JDM prius with 323,000 km. The inverter coolant pump failed recently (got P0A93 code and no agitation in coolant reservoir). I ordered a replacement on eBay and am awaiting arrival. I may need to do some light driving in the in the interim and am thinking about installing a 10 inch fan in the space between the inverter/transmission and radiator to keep things cool. Is this wise or should I just let the car sit until the new pump gets here?
Also, I am burning oil...I usually have to top up 1 to 2 quarts in between changes. Is there anything I can do without tearing down the engine? A friend of mine suggested using Lucas oil stabilizer the next time I change oil...could this have any negative implications?
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How do you know if the inverter coolant pump/reservoir is bad after the recall was performed?Since it doesn't produce any codes but can reduce the electric-drive if getting too hot, how do you convince Toyota to give it a second look?
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I recently purchased a 2003 Explorer. Two weeks after I bought it I found out the motor on the windshield washer water pump was shot. The dealership fixed it for free. About a week after I got it back when I was driving in the morning to work I noticed the check gauge light go on and saw that my temp gauge was pointed at HOT!! I pulled over and stopped immediately. As soon as I slowed down the temp gauge went back down to normal. It happened 2 or 3 more times and had it back at the dealership. They are stumped. They sent it to a Ford dealership and they couldn't find anything either.
They said they have checked everything and it is not overheating. They even put a thermometer on it while they drove it and it didn't get over 205* I am surprised it didn't do it to them because it happens almost every morning. I only work 4.3 miles from my house so its not like I am driving very far. It usually happens at about 3 miles. As soon as I see it going up (and I watch it a lot!!) I take my foot off the gas and start to slow down or barely press the brake it goes right back to normal. Then it stays at normal the rest of the day. Is it the sensor or the wiring or did the do something to it when the fixed the washer motor?
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1,500 miles ago my car had it's 30k service. Today, i got "CHECK...". At home this evening i checked the inverter coolant reservoir, it was empty. I've added 1L of de-ionised water (which got it to full, and i see turbulence in the fluid) until i can get the correct fluid.
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I replaced a water pump on a customers 2013 5.0L truck this week. The bearing was totally shot and lost all the coolant. Truck only had 46000 miles on it, is this common?
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2010 Toyota Prius III with just under 60,000 miles. The car has been serviced at Toyota from day one (by us and by the previous owners) and runs like a champ. Well, did.
Last week while driving home from running errands the Check Hybrid System light came on for my wife. The car was still running so she drove it home for me to look at. I hopped in and noticed the gasoline engine wasn't turning on. I took it for a spin and even when I floored the car the gas engine wouldn't turn on. Since the nearest dealership is 15 highway miles away I knew we weren't going to make it there on electric power so I had it towed.
The Toyota dealership called me the next day saying when they started the car the light was gone and the car ran fine. They did some troubleshooting and found nothing wrong. They said it might have been a glitch and to come get the car. Not even 3 hours later the light turns on again. Again the gasoline engine goes silent, but this time I didn't even make it a mile and the electric power shuts off as well! We coasted to a stop and had to have the car towed again. This happened out of nowhere and could have been a very serious safety situation had it not happened on the road we were on.
This time the Toyota dealership had a little more to say. They said that their diagnosis has determined that the inverter is shot and they will have to order a new one. They said this failure is extremely rare (the service guy I spoke with had never seen this issue).
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Inverter coolant runs low and also regular coolant blows up. Do they use one line together? Everyday I have to fill the inverter.
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My wifes 2008 prius check engine light just came on. Its the control valve sensor. My question is, does that have any serious impact on safety? I've heard mixed on what this valve does (overheating etc).
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I have a 2009 Prius and the check engine light came on last week. I decided to take it to a highly recommended auto repair shop instead of the dealer. The error cord was P1121 and they replaced some kind of coolant control valve. When I went to take the car home I noticed the check engine light was still on and they said there was another similar but different coolant valve that needed to be replaced. They replaced the other part and everything seemed fine.
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My check engine light was throwing the code P1121 for the coolant flow valve. Toyota replaced it under a warranty enhancement (I have 134k on it), and since then my mpgs have gone from 46 to 50.
My AC is working much better now, too. My theory is that the valve can be in a semi-failure mode for a long time before throwing a code. Now that My coolant is flowing the way that it should, heat is being dissipated more efficiently.
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If you drive in 100 degree F weather, use your AC and drive up steep hills. Check your inverter coolant system for trapped air. The inverter pump cannot pump air. I had the LSC about 6 months ago and apparently the mechanic rushed the job and there was still an amazing amount of air in the system, I did this yesterday. Today I checked it again and no more air showed on my clear plastic tubing. Although I had to top the reservoir with 2-3 more ounces, so air could have expelled out of the reservoir and I would not notice it.
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While driving home last night the Red Triangle, CEL and the Hybrid Warning lamp, (on the MFD) all lit up. The cruise control also shut down. We stopped and checked the manual to identify what the symbols meant. We were approximately 90 miles from home, drizzling rain and it was about 60 degrees.
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I have a big red triangle on the pump is making noises not loud noises sounds like it's operating correctly there is no turbulence in reservoir and when I squeeze the hose the level in the reservoir goes up-and-down which leads me to believe there is no blockage in the pipe coming out of out of the pump.
My handheld scanner and torque on my android tablet only gave me my oxygen sensor code which I know about and I'm going to replace when the weather gets hot I am wondering if the coolant pump would throw a code that these devices would be able to pick up or do I need to go to the dealer or find a shop which is capable of reading the HYbrid codes?
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After the warning light & triangle went on in my 2003 Prius, it turned out the inverter pump was bad. It was replaced. Now I am steadily losing MPG as I drive the car. From before the replacement, it has gone from 42 - 44 down to 36. This is in a few days time.
After I got home, I saw that the dealer put on the service ticket that the car might need a new inverter. There was no reason stated for that, and the service rep never mentioned it. In fact, the service rep said that the hybrid system would not be damaged if I drove the car with the warning light, since the hybrid system would shut itself off before any damage would be done.
There is a small leak in the radiator but on inspection, the coolant level is full (actually, while still hot, it is overfull), so I don't think that is the problem, at least not yet.
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In service manual doesn't show the limit time to change the water pump of inverter unit. What is the limit time or limit mileage for change it?
Example, engine's water pump has the limit around 200,000 Km(125,000Mile). But why inverter water pump no limit using time?
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