Possible Belt Sound? SR5 ~ 310 Miles

[Rad_Shaw]

Hi all,

I just hit about 300 miles and am just now hearing a new sound.
This happens during acceleration, not when coasting. A/C on or off.
I notice at lower speeds due to no wind. If windows are up, I can not hear it.

Listen close and you will hear it.

Thank you!

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[the_dude_2018]

I’ve been having the same issue! Have you taken it in to Toyota to get it looked at/found the issue yet?

 

[Tarekith]

I have the same on my ORP, it’s going in to the dealer on Tuesday to get looked at along with a loose feeling rattle in my steering column on bumpy roads. Mine’s been happening since the day I got the 4Runner, seems most obvious starting around 15-20MPH, but I can also hear it when coasting. It seems like it happens less after washing the truck or driving in the rain. Also strange that it doesn’t get louder or change pitch the faster you go.

Honestly not hopeful they are going to fix it, it’s so quiet. But once you hear it annoying AF since it never goes away.

 

[the_dude_2018]

I have the same on my ORP, it’s going in to the dealer on Tuesday to get looked at along with a loose feeling rattle in my steering column on bumpy roads. Mine’s been happening since the day I got the 4Runner, seems most obvious starting around 15-20MPH, but I can also hear it when coasting. It seems like it happens less after washing the truck or driving in the rain. Also strange that it doesn’t get louder or change pitch the faster you go.

Honestly not hopeful they are going to fix it, it’s so quiet. But once you hear it annoying AF since it never goes away.

Please let us know what they end up saying. Mines pretty slight and I can only hear it with the windows down but once you hear it, it’s annoying af and constant.

 

[Tarekith]

Agreed! I'll definitely report back. Keep looking into it on your end too, maybe us end users can at least pinpoint what's causing it.

 

[Tarekith]

Deleted - Not accurately describing the issue.

 

[boynamedsue]

Ok, I spent the morning putting some portable mics around the 4R trying to pinpoint the issue, and I'm 95% sure it's coming from my front left brake barely rubbing on the rotor. I have a feeling it's related to the TSB out now for our 4R's, so taking it in next week to have that done to see if it fixes anything.

I know you say u hear it while driving, but it has to be the same noise I'm having, both whole idle and slow speeds. Mine is far louder than yours though.

Only 400 miles on the car, heard it since day one. I posted in a separate thread, but this one seems more appropriate.

 

[Tarekith]

Yeah that does sound VERY similar to what I'm hearing. Weird that you can hear it at idle though, mine doesn't really start until 15MPH or so. Waiting for parts for my brake TSB to come in, dealership won't look at this noise further until that's done to rule it out. If you take your's in since it's so easy to reproduce, PLEASE let us know what they say.

 

[Tarekith]

Just a follow up in case anyone reads this in the future, the issue was not related to the brake TSB. That has been completed and I still have this chirping noise.

 

[watchbuzz]

It's silly but easy thing you can check...

You could try covering the drain hole in the exhaust. It's hot, so don't use your finger. That hole can get harmonic almost especially when vehicles are new with the filings in/around the opening being fresh.

The resolution is to file/sand the opening likely to break up the harmonic effect. At least that's what I recall. Also, if you leave it... it should mellow out once some soot etc builds up.

 

[Tarekith]

It's silly but easy thing you can check...

You could try covering the drain hole in the exhaust. It's hot, so don't use your finger. That hole can get harmonic almost especially when vehicles are new with the filings in/around the opening being fresh.

The resolution is to file/sand the opening likely to break up the harmonic effect. At least that's what I recall. Also, if you leave it... it should mellow out once some soot etc builds up.

Mine is definitely coming from the engine compartment, and with almost 9k miles on the ORP now it's only getting slightly louder.

 

[watchbuzz]

Got it... The above was really a response to the videos a few responses up.

**Those tacoma videos you shared... are a lot different IMHO.

 

[Tarekith]

UPDATE! The noise I've been hearing from the front of my 4Runner above 30mph has slowly gotten worse, and now that it's very warm every day (and thus louder) I decided to try the dealership again. Drove for an hour first to make sure the noise was very noticeable, and FINALLY the service manager could hear it right away when we went for a drive.

He said he's had a couple vehicles in for this issue, and that it's a needle bearing in the front differential that needs to be replaced. If you put your 4Runner in 4Hi when the noise is happening it will instantly go away, and then come back once you put it back in 2Hi. Something I never noticed before.

I need to bring it back next week so they can record some audio and submit it to Toyota to see how they want it handled, either just replacing the bearing or possible replacing more depending on what HQ says. Either way I'm soo stoked that this is finally going to be addressed, it's been a major annoyance for me since day 1 with the vehicle.

Posting this to a few threads about the issue in case it helps other people troubleshoot and resolve it.

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