Weird "EARRP!" noise when stopped

carbon6 · 10-26-2009, 10:33 AM

All,

I have a 2009 with 20,000 miles on it. Last week it started to make a weird noise when I'm stopped at a traffic light. I get a loud, low sounding "EARRP" noise. It can happen several times while waiting for the light to change, and the car seems to be warmed up to do this. I searched the forums, and find that the brake actuator can cause "chirping." My sound is much lower in frequency. Or, is this the cause?

Any ideas?

Thanks,

Mike

tom1l21 · 10-26-2009, 11:54 AM

Quote:

Originally Posted by carbon6

All,

I have a 2009 with 20,000 miles on it. Last week it started to make a weird noise when I'm stopped at a traffic light. I get a loud, low sounding "EARRP" noise. It can happen several times while waiting for the light to change, and the car seems to be warmed up to do this. I searched the forums, and find that the brake actuator can cause "chirping." My sound is much lower in frequency. Or, is this the cause?

Any ideas?

Thanks,

Mike

It is the actuator, take it into your service department and they will fix it for free. There is a TSB (technical service bulletin) out there somewhere detailing this. It is covered by 3yrs/36k mi I believe. It won't do any damage, but is quite annoying as mine has this issue and is past the warranty date.

qbee42 · 10-26-2009, 12:00 PM

Do you have a sick cat in the back?

Tom

firepa63 · 10-26-2009, 01:36 PM

Don't drink carbonated beverages...

carbon6 · 10-26-2009, 11:22 PM

Thanks for the insight. The noise is coming from the front of the car, so it is probably the brake actuator, and not the cat. :-)

Mike

qbee42 · 10-27-2009, 09:38 AM

Quote:

Originally Posted by carbon6

Thanks for the insight. The noise is coming from the front of the car, so it is probably the brake actuator, and not the cat. :-)

Mike

Cat noises from the front of a car usually consist of one quick screech when starting.

Tom

acacia987 · 10-27-2009, 09:51 AM

Quote:

Originally Posted by tom1l21

It is the actuator, take it into your service department and they will fix it for free. There is a TSB (technical service bulletin) out there somewhere detailing this. It is covered by 3yrs/36k mi I believe. It won't do any damage, but is quite annoying as mine has this issue and is past the warranty date.

last time i checked the TSB only goes up to 2007. do yourself a favor and get the tech to come out so you can reproduce the noise first. My 08 does it and its very annoying. dealer said it was my brake pads slipping, which is impossible if the car is not moving and i am just sitting there with my foot on the brake. what is the problem with all these actuators?

2009Prius · 10-27-2009, 10:39 AM

Does the brake actuator problem develop only after tens of thousands of miles? Any preemptive measure to prevent it?

10-26-2009, 10:33 AM	#1
carbon6 Junior Member Join Date: Oct 2009 Location: Beaveron, OR Posts: 2 My Car: 2009 Prius Model: N/A Package: #6 Touring Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Weird "EARRP!" noise when stopped All, I have a 2009 with 20,000 miles on it. Last week it started to make a weird noise when I'm stopped at a traffic light. I get a loud, low sounding "EARRP" noise. It can happen several times while waiting for the light to change, and the car seems to be warmed up to do this. I searched the forums, and find that the brake actuator can cause "chirping." My sound is much lower in frequency. Or, is this the cause? Any ideas? Thanks, Mike

10-26-2009, 12:00 PM	#3
qbee42 Senior Member Join Date: Mar 2006 Location: Northern Michigan Posts: 10,470 My Car: 2006 Prius Model: Package: #7 Thanks: 93 Thanked 387 Times in 289 Posts Friends: 10	Re: Weird "EARRP!" noise when stopped Do you have a sick cat in the back? Tom

10-26-2009, 01:36 PM	#4
firepa63 Senior Citizen Join Date: Jul 2005 Location: SE Pennsylvania Posts: 928 My Car: 2009 Prius Model: Package: #5 Thanks: 0 Thanked 42 Times in 38 Posts Friends: 0	Re: Weird "EARRP!" noise when stopped Don't drink carbonated beverages...

10-26-2009, 11:22 PM	#5
carbon6 Junior Member Join Date: Oct 2009 Location: Beaveron, OR Posts: 2 My Car: 2009 Prius Model: N/A Package: #6 Touring Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Re: Weird "EARRP!" noise when stopped Thanks for the insight. The noise is coming from the front of the car, so it is probably the brake actuator, and not the cat. :-) Mike

10-27-2009, 10:39 AM	#8
2009Prius Senior Member Join Date: Mar 2009 Location: USA Posts: 437 My Car: 2009 Prius Model: Package: #2 Thanks: 246 Thanked 20 Times in 19 Posts Friends: 19	Re: Weird "EARRP!" noise when stopped Does the brake actuator problem develop only after tens of thousands of miles? Any preemptive measure to prevent it?

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