Prius (2004-09) :: Inverter Pump Noise Constant After Recall?


Apr 14, 2013

I recently had the inverter pump replaced under recall. it now makes a the pump noise even when I am driving. I hear it when car is not fully warmed. Back when it had the original inverter pump, it only made noise at startup and shut off.

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Prius (2004-09) :: Drain Leaking Even After Recall On Inverter Pump

I posted a few months that after replacing my inverter coolant that the drain plug leaked. I tried to tighten it but that did not work. New Aluminum washer was installed. I took it in about 1 month ago for the steering shaft and inverter coolant pump replacement. After they drained the system and refilled post inverter pump replacement It still leaks.

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Prius (2004-09) :: Inverter Pump Noise - No Circulation

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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Prius (2004-09) :: Inverter Coolant Pump Failure

Prius 2009 inverter coolant pump failure 51,300 miles....

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Prius (2004-09) :: Sudden Rush Of Failed Inverter Coolant Pump

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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Prius (2004-09) :: Inverter Coolant Pump Failure / Warning Lights Came On

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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Prius (2004-09) :: Inverter Coolant Pump Failure - P0A93 Code

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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Prius (2004-09) :: Turn Off Red Triangle After Control Valve And Inverter Water Pump Installed

I had the red triangle pop up on my Prius. I codes I got P0A93 and P1121 I needed a new control valve and inverter water pump. I installed both the valve and the inverter pump filled it with new coolant and bled both systems.

I went into maintenance mode so I could run the motor and bleed out all the water. My question is the red triangle is still on in my car when I start it up.. Is there some way to clear the red triangle or does it just go away on its own? Not sure what to do.

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Prius (2004-09) Fuel :: How To Determine If Inverter Pump / Coolant Reservoir Is Not Working Properly

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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Prius (Gen 2) :: Inverter Pump Won't Pump Air

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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Gen 2 Prius :: Inverter Coolant Pump Failures

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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Prius (2004-09) :: Inverter Generator Grinding Noise When Braking Above 7 Mph?

My car was making a weird grinding noise when braking above 7mph. I did the neutral brake thing and seems to go away sometimes. The dealership said it needed new rotors and brakes, so I went ahead and did that with them, then called me to let me know the sound did not go away. Now they are stating my grinding noise is coming from the "inverter generator" which is what they said was the transmission. I am just curious why this goes away sometimes and if it's related to my previous issues with the car.

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Prius (Gen 2) :: 2008 / Inverter Coolant Pump Leak?

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 (Gen 2) :: Inverter Pump Failure - Code P0A93

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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Prius (2001-03) :: Losing MPG After Inverter Pump Replacement

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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Prius (2010-12) :: Water Pump For Inverter Unit

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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Prius (Gen 2) :: Inverter Pump Damaged - Car Dead, No Warning Lights

I own a 2007 Prius last Friday I was driving on the freeway when all of sudden the car died on me without any warning lights. There was a bad burning smell which later I realize it was from the inverter coolant pump. I was luckily able to mange to pull on side. Towing was another pain because the car wont turn (start) or acc so you can't shift to neutral and the front wheels were locked.

Took it to Toyota they refused to cover any work because inverter pump was replaced by the previous owner about 2 years ago. between that there is hardly 20k on it.

Now the car wont start. I checked the main fuse on auxiliary battery and its working fine. The interior lights are turning on, alarm and key fob works, power locks working. but it wont start.

I heard there is a fuse that will be tripped by the coolant pump it's 15A AM2 fuse. I don't know where is that fuse. I can have the pump replaced but need to know how to tun on the car. A local mechanic came to check and he said that main relay showing current only on battery side but not towards inlet (going to engine or car).

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Prius (2001-03) :: Code P3130 - Bad Inverter Water Pump

2002 Prius with 94K gave me today P3130, after I tested the Inverter Water Pump I found out that it bad but until I go to the dealer in order to buy the part $147 he was closed. the question is can I drive with the car like this bac home (65 miles) and if I turn on the A/C the Engine will work all the time right? And also after replacing the Inverter Water Pump how can i tell if the problem solved?

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Prius (Gen 2) :: Check Engine Light Is On - Inverter Coolant Pump Shot

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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Prius (Gen 1) :: 2001 Toyota Inverter Cooling Pump Fault Code P3130

I have a 2001 Toyota Prius. The inverter cooling pump was dead and I had the P3130 fault code. I replaced the pump and the refilled the fluid. After more than 4 or 5 times bleeding the system, now the pump sounds funny. It sounds like a water fall and look like it has too much air!!!! I can’t see any turbulence in the reservoir tank either.

There are 2 bleeding valves on the front side of the Inverter. Which one should be used to for bleeding the system? Both?

Does the system have any thermostat that could cause problem? Does it use the same radiator as the main one? What could cause having NO turbulence? I think the new pump will be dead too if it can’t make the turbulence.

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Prius (2004-09) :: Beep And Warning Message After Brake Recall Fix

10 days ago I bought my '05 Prius to the dealership to get the Brake Recall fix along w/ an oil change and inspection. Since then I took a road trip and put about 1,000 miles on. Two days ago, when pulling up to my house, I got a beep and warning message, since I was home I parked and decided to worry about it later.

The next morning the car turned on but would not move (crawled a bit forward and reverse but was basically dead). I checked the meaning of the warning light and its the Hybrid Systems Warning Light. From the information screen it appears the battery is drained and therefore electric motor won't function.

Of course I'm worried its the expensive battery dying on me but would this happen all at once or slowly over time? Unfortunately I'm at 117,000 mi so the system is out of warranty. My next thought was that something they had with the brake recall may have caused the problem (though it would seem odd it'd take 10 days to happen).

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