Possible car problem(?) question

[ironxman99]

hi guys, i don't know much about cars so just seeking some quick advice.

i just bought a new 4runner and i've put about 500 miles on it. i noticed that when i press my brakes, there's a slight suction/hissing sound. it only happens when i intially press them, not when i continue to push it down. also, if the brakes are partially pressed and i simply push harder its fine. it only happens on the initial pressure.

the brakes seem to be working fine - i don't need to push it overly hard, nor do they seem abnormally sensitive. i'm not sure if this has been going on since i bought it because i just noticed it (usually the windows are open or the radios blaring so i wouldn't have heard it). its just annoying to hear a hiss every time i press the brakes, esp when its quiet. or is this a bigger potential problem?

thanks in advance.

 

[slikmunks]

my pops' suburban had the same thing, i think it might be the hydraulics in the brake system... nothing to worry about...

and um, if you bought a new 4runner w/ 500 mi on it and you're worried about something, take it back to the dealership and get it checked under warranty.

turn up ur radio 😉 that will help with the noise

 

[ironxman99]

yea, i just don't want to waste a couple hours of my day off at the dealer if its nothing to worry about.

 

[ironxman99]

anyone w/ extensive car knowledge have a clue?

 

[IronWing]

My FJ does the same thing. It seems to be the hydraulics activating. No brake problems at 4500 miles.

Edit: I believe the 07 FJ and 4Runner share the same braking system.

 

[thomsbrain]

Originally posted by: ironwing
My FJ does the same thing. It seems to be the hydraulics activating. No brake problems at 4500 miles.

Edit: I believe the 07 FJ and 4Runner share the same braking system.

they probably do share brakings systems, since they share platforms.

 

[ironxman99]

thanks for the response guys. my friend who also owns a recent model 4runner said he took it to the dealer and they said its normal.