Prius 08 makes noise when brake pedal is pushed

Very odd.

Be aware the G2 suffers from the abs module failure which is very expensive and makes a barking sound. If it fails your brakes should be really bad stiff pedal and poor braking and lots of codes on the dash.

I have not suffered this yet so please use the search forum tab up top and search

abs module

and see if that's what you have going one. Very expensive repair.

 

No fault lights on? Read the codes with Toyota hybrid capable scanner. But yes bad ABS module is a possible cause.

 

I don't really understand what you did. Reading the codes might still give you some information. Also if anything that you did could cause there to be air in the system bleeding it with a computer might be needed.

 

just wondering, wouldn't the pedal be more spongey/soft if the brake was going bad (loosing pressure)? i have the occasional brake bark but no where near as non stop as the videos above, i noticed my braking feeling better when the pedal is stiffer(but can still be depressed all the way down).
@OP, i would first try to check all your fluids and 12v and stuff, the usual checks for gen 2 prius issues. Then lastly best option is to check for any codes via techstream, possibly even use it to bleed the brakes a bit.

 

Don’t know much about abs issues but I do know if a brake caliper piston gets stuck and you hammer it back that caliper needs to be replaced.

Not sure why no one can post the mileage on there car on a CAR REPAIR FORUM.

But I guess shouldn’t expect much from a 5 word post.

 

Depends completely on where the pressure is being lost.

The brake system uses the pressure to assist you. The pedal is a lot harder to press (and the car a lot harder to stop, but you still eventually can) if that pressure upstream of your pedal is lost.

The extra scary times are if something fails to hold pressure downstream of your pedal, so the pedal is squishy or goes to the floor and you wish you were slowing down.

Any brake system is complicated enough that it can have different kinds of "going bad" that you would notice in different ways. And the one in the Prius is even more complicated than that, which is why it's not a bad move to be sort of familiar with the diagrams in the New Car Features manual, and to pay close attention to whatever diagnostic codes the system gives you, if any.