New to me 2013 gs450h, 90,000km(55,000miles). Still learning what feels normal. I noticed a very subtle, very brief vibration under light braking. Only happens somtimes.
Dealership said they put new pads and rotors prior to selling. So I doubt its warped rotors

Is that an early symptom of the issue?

started reading up on CL, and 4g gsh aren't included as affected vehicles. But someone posted our Brake actuators are backwards compatible to the 3rd gen

Did they update the system from the 3rd gen?
Has anybody suffered from this issue?

cheers

 

My '13 does the same thing with 87k. It had new brakes installed by the dealer before I bought the vehicle. I think it's the design of the regenerative braking as I am not braking hard enough to actually apply the brakes? My 2011 RX 450h was seamless from start to stop. Or maybe it's the very light braking to maximize fuel economy that causes a pad/rotor mating vibration because the brakes never really get "bedded"

 

The actuators are shared with the Camry and other Lexus models. They are nothing special.

Toyota keeps changing the part number between years and model years.

mine doesn’t vibrate at low speeds. What is your part number?

 

Still having problems with this issue. Anyone???

 

My 13 seems to have more anti-lock grab when slowing down hard fast. The car kind of hops. But no vibration like warped rotors. I assume I still have the original pads and rotors since the car only has 45K on it.

 

Sorry for being MIA
The vibration has disappeared. the new breaks where probably setting itself in. I've been driving a lot this year.

I was getting paranoid because of the vibrations coupled with actuators electronically pressurizing the break lines would make a low rumble once in a while. I thought it was symptoms of this issue
but after a rabbit hole of forums that lead to the Toyota Prius page. I learned, with hybrid vehicles the engine isn't always running, which is what usually keeps the break lines pressurized on a normal vehicle. To overcome this(specifically Toyota/Lexus), they have an electric actuator to pressurize the lines once in a while. you will usually hear a low grown when u unlock the drivers door/on start up or sometimes after being in EV mode for a long time. this is normal
you can YouTube "Prius brake actuator noise" check a couple vids to know what I'm talking about.

This is my first hybrid so I had no idea. Sound is normal, vibrations are gone.

What isn't normal is if that brake actuator sound stays on for an extended period of time, or comes on way too frequently- those are symptom's to look further into