2018 RX450H F sport Braking Noisie
 

hi i got a knock noise from the passenger front when i brake. i brought it to lexus and they say its the brake aculator making the noise. i was wondering if this noise normal. the video i post theres two noise the noise im refering to sound like something rolling onto something.

No. BA should not be firing every time you tap brakes. I have 2 Lexi - 2011 and 2015, both have BAs. None of that. Had 2007 Camry Hybrid and 2012 Highlander Hybrid, both with BA, same thing.

Just take another same model out for test drive. Year and model. Go to a different dealer in a different car. Tell them you want to t-drive one.

And why are you racing two Cameros?

wat u mean by racing two cameros? o.0 I just got an update from the dealership they test drive another 450H and didn't hear anything so they say mines has abnormal noise and they suspected its the brake actuator. they ordered a new brake actuator this morning and will come in tomorrow morning. they will put it in the same day and will let me know if it solve the problem.

update on this, so they changed the brake actuator and they still can hear the noise. they say when u sit on the driver seat you can hear the noise coming from the passenger side, and if you sit on the passenger side you can hear the noise coming from the driver side. they are letting the shop foreman handling this tomorrow and will update me again.

NEW UPDATE: the tech found out that theres something inside the sunglasses holder. every1 over looked that including me. so everything is fixed now including the brake buzzing noise since they replaced the brake actuator .

i heard that in the video, but didnt think you would chase something that obvious
ahh sounds like it was 2 different noises.

the first noise is when I step on the brake pedal hard which cause the noise then the second noise is the rolling noise.