[larryham]

Hello,

I just got my nx300h on Saturday and I am very pleased with it. I just have one question as I am new to hybrid vehicles. Sometimes when I brake, I will hear a air breathing sound and this is freaking me out. It is then followed by the electronic whirring noise. In my Audi A4 I had this problem before where it made that air releasing sound and proceeded for me to lose braking power. Ended up replacing the master cylinder & vacuum pump.

I messaged the dealer and they said it was normal in Hybrid vehicles. Other forums have said it was part of the regenerative brake process. Can someone explain the air releasing sound for me? Other ways to describe it is a fart, an air pump or a hissing sound.

Thank you,

 

[mister]

I am going to guess that this is the regenerative braking system engaging.

 

[Kennedy]

You might be able to find videos of that air releasing sound on YouTube if you haven't searched already, but i'm also in for seeing responses that show up here.

 

[mister]

I would check youtube because any description we give isn't going to be as good as actually hearing it in a video.

 

[David]

Other Lexus vehicles might have this problem, not entirely exclusive to the NX, some luck finding it also though them.

 

[bazann]

Hi all NX owners, Apologies for tagging onto this post subject; but can anyone tell me if the NX Luxury navigation system has an integral Speed Camera warning system, like most satnavs have? Had my new NX s couple of weeks and can't find any specific reference to speed camera recognition!

 

[iride4u]

Larryham
If your dealer did not tell you how the regenerative braking works here is what I was told when I got my RX400h.
At all speeds above 5 MPH the vehicle is stopped by regenerative braking except in a panic stop. If you go down a long hill resting your foot on the brake pedal will increase the amount of energy that gets stored (this will also drive the vehicle behind you nuts). When you press the brake pedal the electric motor becomes a generator and also acts as the brakes. On the RX the accelerator is also connected to the computer that controls the electric motors and the gas engine. I was told by my dealer that the RX450h is also steer by wire, I do not know if this is the case with the NX.

 

[suxelxn]

@ bazann

When you hear a double sound just like an sms coming, then you know the speed camera is around, at least 200 mt (or 70 ft if you prefer) distant.

The distance may vary as is speed related.

 

[suxelxn]

I mean 700 ft.

A zero was lost in translation...

 

[iride4u]

I find it interesting that Lexus would put software that tells you where speed cameras are. In the US they don't dare, if it missed one they would be sued. If it finds everyone then they would be accused of letting people speed. This puts a manufacturer in a no win situation. If we want traffic camera detection then we need an add on solution. Mine is a Escort Max 2.

 

[Kennedy]

I find it interesting that Lexus would put software that tells you where speed cameras are. In the US they don't dare, if it missed one they would be sued. If it finds everyone then they would be accused of letting people speed. This puts a manufacturer in a no win situation. If we want traffic camera detection then we need an add on solution. Mine is a Escort Max 2.

One downside to them doing that is it now creates a market for a company to come along and develop technology that doesn't get detected with the level of tech Lexus used, rendering it useless and in the process scoring deals with police forces.

 

[TheLex]

Isn't this option only available in the European Lexus models? I thought it was illegal in the US and Canada?