Odd brake noise from pump ('14 LC 8k miles)

[GOHOGS]

Hi all. Looking for some opinions before I take my LC in tomorrow for a diagnosis:

-14 LC with 8k miles. Owned it about 3 weeks.
-Making two distinct noises (one after the other) nearly every time I press the brake pedal
-Tough to hear with the radio on or windows down. Easily audible when radio off / windows up
-First noise is somewhat of a "woosh".... Almost sounds like some air escaping as I depress the brake pedal.
-Second noise immediately after I press the brake is a buzzing for 2-3 seconds. Sounds almost like some sort of small pump or servo motor.
-Sound seems to come from behind the dash in the same area as the brake pedal, but I'm not positive on that.

Any ideas? Since it's clearly related to braking, I've got a sense of urgency to get this looked at asap.

 

[planetalaska]

The woosh is fairly typical of Toyotas. All mine had the woosh (several 4Runners and 1 LC). As for the buzzing, it's the brake booster pump. To replicate the sound, hit the brakes 4 to 5 times at a stop and you will hear the buzzing on the 4th or 5th push all the time.



► Alaska 2011 LC200 / Silver / 285-65-18 BFG All Terrain TA/KO ►

 

[malloc]

Heard the same thing in mine right after I got it (used 2011). Dealer said its normal and the new one on their lot had same behavior. Never one to trust a dealer I posted here and the response was that its normal. Enjoy your ride!

 

[GOHOGS]

Thanks for the feedback. Hearing this every 4th or 5th time makes sense. What concerns me is that this happens nearly every time I touch the brake pedal.... Probably around 9 of 10 times I press it. Is that normal for this car? Thx.

 

[GOHOGS]

Took my LC to the dealer on the way into the office this morning. Explained exactly what I said above in my post. They said the first "woosh" sound is normal, and I should expect to hear the second sound (brake accumulator) more often than not any time I press the brake. Does this seem right to the experts on the board? Thx.

 

[planetalaska]

If you hear the buzz 9 times out of 10, it's more than my 2011 LC. Maybe you can go to the dealer and have them start the engine on one of the LC on the lot. You don't even have to drive it. Just pump the brakes and see how often you hear the buzz.



► Alaska 2011 LC200 / Silver / 285-65-18 BFG All Terrain TA/KO ►

 

[SWUtah]

My LX570 does not do this. Is this specific to the LC. Maybe with the LX570 the more sound deading material make it so you don't notice.