Trailhunter Hybrid high pitched noise

[TXTaco85]

My iForce Max makes an identical sound up to/below 20 mph. I was greatly relieved to find it is not a problem, but rather, sounding as designed. Having said that, I hate the noise and will likely look to disable it. Super loud in my parking garage at work.

Any luck disabling the sound?
Now that I'm aware of it, it's all I hear lol

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[jettaway]

You can disable the speaker, thus disabling the sound. But the only way to do it without triggering multiple warning lights on the dash is to wire in a resistor to the plug that goes to the speaker.

The speaker is located directly centered behind the front grill, mid way up. You need to remove the front bumper to access it. The resistor that works is for sale on amazon here.

I believe there may be a secondary speaker behind the rear bumper for when you are in reverse, but that is much less noticeable and only activated when backing up.

Now be aware, I have not done this mod myself. I was planning to when I installed my winch, but elected to keep the sound due to the danger to pedestrians, and the potential for a lawsuit if I were to hit someone who might be blind or disabled.

 

[mattski2112]

Any luck disabling the sound?
Now that I'm aware of it, it's all I hear lol

I bought and assembled all of the components to disable the noise, but I’m waiting for warmer weather before I take the front end apart. The noise really bugs me, too.

 

[skipjacknewport]

High pitch cabin noise (not pedestrian warning).

Bad news. I have run this up the ladder as far as possible with Toyota. After a few weeks of calling they sent an engineer out to my local dealer. The answer unfortunately was still “it’s the noise the hybrid system makes” no farther explanation or which part of the system just “the hybrid system”.

If you can’t hear it you are lucky. According to Toyota all of their hybrid trucks make a high pitch noise that plays through the cabin and never stops (unless the engine is off and you are at a full stop or in park).

 

[SnowmanJPS]

High pitch cabin noise (not pedestrian warning).

Bad news. I have run this up the ladder as far as possible with Toyota. After a few weeks of calling they sent an engineer out to my local dealer. The answer unfortunately was still “it’s the noise the hybrid system makes” no farther explanation or which part of the system just “the hybrid system”.

If you can’t hear it you are lucky. According to Toyota all of their hybrid trucks make a high pitch noise that plays through the cabin and never stops (unless the engine is off and you are at a full stop or in park).

I haven't heard such thing in my truck, but I also have tinnitus..

 

[TacoFreak]

It turns out being about 1/2 deaf from years of running power equipment and shooting guns has its benefits.

 

[skipjacknewport]

It turns out being about 1/2 deaf from years of running power equipment and shooting guns has its benefits.

Sounds like it’s time to stop wearing ear protection

 

[SnowmanJPS]

Sounds like it’s time to stop wearing ear protection

WHAT? You could start racing motocross or get a sport bike too

 

[TacoFreak]

WHAT? You could start racing motocross or get a sport bike too

Damn - did both of those too. It is lucky I can hear at all.

 

[Baltimore]

It’s the hybrid motor

This is wrong. It is not the motor.

It's an independent speaker that has to exist by federal law on any electric only vehicle in order to alert blind and hard-of-sight people to a moving vehicle's presence. That's why it cuts off as soon as the ICE engine kicks in, because then the engine and exhaust make equivalent "alert" noise.

 

[tacorancher]

This is wrong. It is not the motor.

It's an independent speaker that has to exist by federal law on any electric only vehicle in order to alert blind and hard-of-sight people to a moving vehicle's presence. That's why it cuts off as soon as the ICE engine kicks in, because then the engine and exhaust make equivalent "alert" noise.

Ok. I didn’t know that. Thanks.

 

[Baltimore]

Ok. I didn’t know that. Thanks.

Here's more details if you're interested.
https://www.transportation.gov/brie...uiet-car”-safety-standard-protect-pedestrians

As of Monday, November 14, 2016: Manufacturers have until Sept. 1, 2019, to equip all new hybrid and electric vehicles with sounds that meet the new federal safety standard. Under the new rule, all hybrid and electric light vehicles with four wheels and a gross vehicle weight rating of 10,000 pounds or less will be required to make audible noise when traveling in reverse or forward at speeds up to 30 kilometers per hour (about 19 miles per hour). At higher speeds, the sound alert is not required because other factors, such as tire and wind noise, provide adequate audible warning to pedestrians.

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