Inverter coolant pump running

twdusa · 12-29-2005, 04:03 PM

I have just noticed that the Inverter coolant pump runs not only with the car in the READY mode which seems normal ---- but it also runs continuously with the car in the ACC mode (press the power button twice without pressing the brake----amber light on power button---car not powered up).

Is this normal? I never noticed the HUM of the pump before with the car not powered up before?

Tom

galaxee · 12-31-2005, 11:25 PM

hmmmm... that's not right. it shouldn't be running for more than 10 sec or so.

ours won't run at all in ACC mode... at least when he ran out and checked just now.

notice any other problems? mileage still okay? where in ENC are you? DH works at a dealer in Durham.

well anyway, when you bring it in, ask to talk to the top Prius Tech. ask the guy if he's familiar with the schedule of when that pump is supposed to be running. show him yourself what it's doing. sounds like it needs to be looked at.

good luck to you, let us know how it turns out.

Frank Hudon · 12-31-2005, 11:55 PM

and do it before it burns out and they say no sound is normal. If it's not making any noise by the time your at the dealer get the tech to hook up the THHT

12-31-2005, 11:25 PM	#2
galaxee uphill battling Join Date: Mar 2005 Location: central NC/ western WI Posts: 8,823 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 19	hmmmm... that's not right. it shouldn't be running for more than 10 sec or so. ours won't run at all in ACC mode... at least when he ran out and checked just now. notice any other problems? mileage still okay? where in ENC are you? DH works at a dealer in Durham. well anyway, when you bring it in, ask to talk to the top Prius Tech. ask the guy if he's familiar with the schedule of when that pump is supposed to be running. show him yourself what it's doing. sounds like it needs to be looked at. good luck to you, let us know how it turns out. __________________ black 2005 prius, tweaked just the way i like it as DH was once told, someone with his capability should be in college, not doing mindless maintenance awaiting the occasional brain teaser. after conquering the entire ASE automotive series, he's busy retooling the diagnostic mindset for other life protecting applications. the prius tech is officially scarce, and his other half is sad without him.

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12-29-2005, 04:03 PM	#1
twdusa Join Date: Mar 2005 Location: Eastern North Carolina Posts: 53 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I have just noticed that the Inverter coolant pump runs not only with the car in the READY mode which seems normal ---- but it also runs continuously with the car in the ACC mode (press the power button twice without pressing the brake----amber light on power button---car not powered up). Is this normal? I never noticed the HUM of the pump before with the car not powered up before? Tom

12-31-2005, 11:55 PM	#3
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	and do it before it burns out and they say no sound is normal. If it's not making any noise by the time your at the dealer get the tech to hook up the THHT